This series is simply rebased on v5.2rc1 and I added the Reviewed-By
from Palmer for the first patch, thanks for that.
This series introduces hugetlbfs support for both riscv 32/64. Riscv32
is architecturally limited to huge pages of size 4MB whereas riscv64 has
2MB/1G huge pages support. Transparent huge page support is not
implemented here, I will submit another series later.
As stated in "The RISC-V Instruction Set Manual, Volume II: Privileged
Architecture", riscv page table entries are marked as non-leaf entries
as soon as at least one of the R/W/X bit set:
- pmd_huge/pud_huge check if one of those bits are set,
- pte_mkhuge simply returns the same pte value and does not set any of
the R/W/X bits
This series was validated using libhugetlbfs testsuite ported to riscv64
without linker script support.
(https://github.com/AlexGhiti/libhugetlbfs.git, branch dev/alex/riscv).
- libhugetlbfs testsuite on riscv64/2M:
- brk_near_huge triggers an assert in malloc.c, does not on x86.
- libhugetlbfs testsuite on riscv64/1G:
- brk_near_huge triggers an assert in malloc.c, does not on x86.
- mmap-gettest, mmap-cow: testsuite passes the number of default free
pages as parameters and then fails for 1G which is not the default.
Otherwise succeeds when given the right number of pages.
- map_high_truncate_2 fails on x86 too: 0x60000000 is not 1G aligned
and fails at line 694 of fs/hugetlbfs/inode.c.
- heapshrink on 1G fails on x86 too, not investigated.
- counters.sh on 1G fails on x86 too: alloc_surplus_huge_page returns
NULL in case of gigantic pages.
- icache-hygiene succeeds after patch #3 of this series which lowers
the base address of mmap.
- fallocate_stress.sh on 1G never ends, on x86 too, not investigated.
- libhugetlbfs testsuite on riscv32/4M: kernel build passes, lacks
libhugetlbfs support for 32bits.
* Output for riscv64 2M and 1G libhugetbfs testsuite:
zero_filesize_segment (2M: 64):
zero_filesize_segment (1024M: 64):
test_root (2M: 64): PASS
test_root (1024M: 64): PASS
meminfo_nohuge (2M: 64): PASS
meminfo_nohuge (1024M: 64): PASS
gethugepagesize (2M: 64): PASS
gethugepagesize (1024M: 64): PASS
gethugepagesizes (2M: 64): PASS
gethugepagesizes (1024M: 64): PASS
HUGETLB_VERBOSE=1 empty_mounts (2M: 64): PASS
HUGETLB_VERBOSE=1 empty_mounts (1024M: 64): PASS
HUGETLB_VERBOSE=1 large_mounts (2M: 64): PASS
HUGETLB_VERBOSE=1 large_mounts (1024M: 64): PASS
find_path (2M: 64): PASS
find_path (1024M: 64): PASS
unlinked_fd (2M: 64): PASS
unlinked_fd (1024M: 64): PASS
readback (2M: 64): PASS
readback (1024M: 64): PASS
truncate (2M: 64): PASS
truncate (1024M: 64): PASS
shared (2M: 64): PASS
shared (1024M: 64): PASS
mprotect (2M: 64): PASS
mprotect (1024M: 64): PASS
mlock (2M: 64): PASS
mlock (1024M: 64): PASS
misalign (2M: 64): PASS
misalign (1024M: 64): PASS
fallocate_basic.sh (2M: 64): PASS
fallocate_basic.sh (1024M: 64): PASS
fallocate_align.sh (2M: 64): PASS
fallocate_align.sh (1024M: 64): PASS
ptrace-write-hugepage (2M: 64): PASS
ptrace-write-hugepage (1024M: 64): PASS
icache-hygiene (2M: 64): PASS
icache-hygiene (1024M: 64): PASS
slbpacaflush (2M: 64): PASS (inconclusive)
slbpacaflush (1024M: 64): PASS (inconclusive)
straddle_4GB_static (2M: 64): PASS
straddle_4GB_static (1024M: 64): PASS
huge_at_4GB_normal_below_static (2M: 64): PASS
huge_at_4GB_normal_below_static (1024M: 64): PASS
huge_below_4GB_normal_above_static (2M: 64): PASS
huge_below_4GB_normal_above_static (1024M: 64): PASS
map_high_truncate_2 (2M: 64): PASS
map_high_truncate_2 (1024M: 64): FAIL ftruncate(): Invalid
argument
misaligned_offset (2M: 64): PASS (inconclusive)
misaligned_offset (1024M: 64): PASS (inconclusive)
truncate_above_4GB (2M: 64): PASS
truncate_above_4GB (1024M: 64): PASS
brk_near_huge (2M: 64): brk_near_huge: malloc.c:2385: sysmalloc:
Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned
long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long)
old_end & (pagesize - 1)) == 0)' failed.
brk_near_huge (1024M: 64): brk_near_huge: malloc.c:2385: sysmalloc:
Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned
long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long)
old_end & (pagesize - 1)) == 0)' failed.
task-size-overrun (2M: 64): PASS
task-size-overrun (1024M: 64): PASS
stack_grow_into_huge (2M: 64): PASS
stack_grow_into_huge (1024M: 64): PASS
corrupt-by-cow-opt (2M: 64): PASS
corrupt-by-cow-opt (1024M: 64): PASS
noresv-preserve-resv-page (2M: 64): PASS
noresv-preserve-resv-page (1024M: 64): PASS
noresv-regarded-as-resv (2M: 64): PASS
noresv-regarded-as-resv (1024M: 64): PASS
readahead_reserve.sh (2M: 64): PASS
readahead_reserve.sh (1024M: 64): PASS
madvise_reserve.sh (2M: 64): PASS
madvise_reserve.sh (1024M: 64): PASS
fadvise_reserve.sh (2M: 64): PASS
fadvise_reserve.sh (1024M: 64): PASS
mremap-expand-slice-collision.sh (2M: 64): PASS
mremap-expand-slice-collision.sh (1024M: 64): PASS
mremap-fixed-normal-near-huge.sh (2M: 64): PASS
mremap-fixed-normal-near-huge.sh (1024M: 64): PASS
mremap-fixed-huge-near-normal.sh (2M: 64): PASS
mremap-fixed-huge-near-normal.sh (1024M: 64): PASS
set shmmax limit to 67108864
shm-perms (2M: 64): PASS
private (2M: 64): PASS
private (1024M: 64): PASS
fork-cow (2M: 64): PASS
fork-cow (1024M: 64): PASS
direct (2M: 64): Bad configuration: Failed to open direct-IO
file: Invalid argument
direct (1024M: 64): Bad configuration: Failed to open direct-IO
file: File exists
malloc (2M: 64): PASS
malloc (1024M: 64): PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc (2M: 64):
PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc (1024M: 64):
PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:none
HUGETLB_MORECORE=yes malloc (2M: 64): PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:none
HUGETLB_MORECORE=yes malloc (1024M: 64):PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:malloc
HUGETLB_MORECORE=yes malloc (2M: 64): PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:malloc
HUGETLB_MORECORE=yes malloc (1024M: 64): PASS
malloc_manysmall (2M: 64): PASS
malloc_manysmall (1024M: 64): PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc_manysmall (2M:
64): PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc_manysmall (1024M:
64): PASS
heapshrink (2M: 64): PASS
heapshrink (1024M: 64): PASS
LD_PRELOAD=libheapshrink.so heapshrink (2M: 64): PASS
LD_PRELOAD=libheapshrink.so heapshrink (1024M: 64): PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes heapshrink (2M: 64):
PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes heapshrink (1024M: 64):
PASS
LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE=yes
heapshrink (2M: 64): PASS
LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE=yes
heapshrink (1024M: 64): PASS
LD_PRELOAD=libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
HUGETLB_MORECORE=yes heapshrink (2M: 64): PASS (inconclusive)
LD_PRELOAD=libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
HUGETLB_MORECORE=yes heapshrink (1024M: 64): PASS (inconclusive)
LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
HUGETLB_MORECORE=yes heapshrink (2M: 64): PASS
LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
HUGETLB_MORECORE=yes heapshrink (1024M: 64): FAIL Heap did not
shrink
HUGETLB_VERBOSE=1 HUGETLB_MORECORE=yes heap-overflow (2M: 64): PASS
HUGETLB_VERBOSE=1 HUGETLB_MORECORE=yes heap-overflow (1024M: 64):
PASS
HUGETLB_VERBOSE=0 linkhuge_nofd (2M: 64):
HUGETLB_VERBOSE=0 linkhuge_nofd (1024M: 64):
LD_PRELOAD=libhugetlbfs.so HUGETLB_VERBOSE=0 linkhuge_nofd (2M: 64):
LD_PRELOAD=libhugetlbfs.so HUGETLB_VERBOSE=0 linkhuge_nofd (1024M: 64):
linkhuge (2M: 64):
linkhuge (1024M: 64):
LD_PRELOAD=libhugetlbfs.so linkhuge (2M: 64):
LD_PRELOAD=libhugetlbfs.so linkhuge (1024M: 64):
linkhuge_rw (2M: 64):
linkhuge_rw (1024M: 64):
HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
HUGETLB_ELFMAP=no linkhuge_rw (2M: 64):
HUGETLB_ELFMAP=no linkhuge_rw (1024M: 64):
HUGETLB_ELFMAP=R HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
HUGETLB_ELFMAP=R HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
HUGETLB_ELFMAP=W HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
HUGETLB_ELFMAP=W HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
HUGETLB_ELFMAP=RW HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
HUGETLB_ELFMAP=RW HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
HUGETLB_SHARE=0 HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
HUGETLB_SHARE=0 HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
HUGETLB_SHARE=1 HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
HUGETLB_SHARE=1 HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
HUGETLB_SHARE=0 HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
HUGETLB_SHARE=0 HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
HUGETLB_SHARE=1 HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
HUGETLB_SHARE=1 HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
HUGETLB_SHARE=0 HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
HUGETLB_SHARE=0 HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
HUGETLB_SHARE=1 HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
HUGETLB_SHARE=1 HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
chunk-overcommit (2M: 64): PASS
chunk-overcommit (1024M: 64): PASS
alloc-instantiate-race shared (2M: 64): PASS
alloc-instantiate-race shared (1024M: 64): PASS
alloc-instantiate-race private (2M: 64): PASS
alloc-instantiate-race private (1024M: 64): PASS
truncate_reserve_wraparound (2M: 64): PASS
truncate_reserve_wraparound (1024M: 64): PASS
truncate_sigbus_versus_oom (2M: 64): PASS
truncate_sigbus_versus_oom (1024M: 64): PASS
get_huge_pages (2M: 64): PASS
get_huge_pages (1024M: 64): PASS
shmoverride_linked (2M: 64): PASS
HUGETLB_SHM=yes shmoverride_linked (2M: 64): PASS
shmoverride_linked_static (2M: 64):
HUGETLB_SHM=yes shmoverride_linked_static (2M: 64):
LD_PRELOAD=libhugetlbfs.so shmoverride_unlinked (2M: 64): PASS
LD_PRELOAD=libhugetlbfs.so HUGETLB_SHM=yes shmoverride_unlinked (2M:
64): PASS
quota.sh (2M: 64): PASS
quota.sh (1024M: 64): PASS
counters.sh (2M: 64): PASS
counters.sh (1024M: 64): FAIL mmap failed: Invalid argument
mmap-gettest 10 35 (2M: 64): PASS
mmap-gettest 10 35 (1024M: 64): FAIL Failed to mmap the hugetlb file:
Cannot allocate memory
mmap-cow 34 35 (2M: 64): PASS
mmap-cow 34 35 (1024M: 64): FAIL Thread 15 (pid=514) failed
set shmmax limit to 73400320
shm-fork 10 17 (2M: 64): PASS
set shmmax limit to 73400320
shm-fork 10 35 (2M: 64): PASS
set shmmax limit to 73400320
shm-getraw 35 /dev/full (2M: 64): PASS
fallocate_stress.sh (2M: 64): libgcc_s.so.1 must be installed for
pthread_cancel to work
fallocate_stress.sh (1024M: 64):
********** TEST SUMMARY
* 2M 1024M
* 32-bit 64-bit 32-bit 64-bit
* Total testcases: 0 93 0 83
* Skipped: 0 0 0 0
* PASS: 0 69 0 56
* FAIL: 0 0 0 5
* Killed by signal: 0 1 0 2
* Bad configuration: 0 1 0 1
* Expected FAIL: 0 0 0 0
* Unexpected PASS: 0 0 0 0
* Test not present: 0 21 0 19
* Strange test result: 0 1 0 0
**********
Changes in v2:
- Merge comment fix about task size.
- Patch about mmap base address was merged separately.
- Rebased on top of linux-next where series about the capability
to free gigantic pages regardless of the configuration was merged.
- Add huge pmd sharing as suggested by Mike Kravetz.
- Gigantic page hstate is automatically created if CONTIG_ALLOC is
set, even if not explicitly asked for in command line, as suggested
by Mike.
- Replace #ifdef CONFIG_64BIT into IS_ENABLED(CONFIG_64BIT), as suggested
by Christoph Hellwig.
Alexandre Ghiti (2):
x86, arm64: Move ARCH_WANT_HUGE_PMD_SHARE config in arch/Kconfig
riscv: Introduce huge page support for 32/64bit kernel
arch/Kconfig | 3 +++
arch/arm64/Kconfig | 2 +-
arch/riscv/Kconfig | 8 ++++++
arch/riscv/include/asm/hugetlb.h | 18 +++++++++++++
arch/riscv/include/asm/page.h | 10 ++++++++
arch/riscv/include/asm/pgtable.h | 8 ++++--
arch/riscv/mm/Makefile | 2 ++
arch/riscv/mm/hugetlbpage.c | 44 ++++++++++++++++++++++++++++++++
arch/x86/Kconfig | 4 +--
9 files changed, 93 insertions(+), 6 deletions(-)
create mode 100644 arch/riscv/include/asm/hugetlb.h
create mode 100644 arch/riscv/mm/hugetlbpage.c
--
2.20.1
ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
move this declaration in arch/Kconfig and make those architectures
select it.
Signed-off-by: Alexandre Ghiti <[email protected]>
Reviewed-by: Palmer Dabbelt <[email protected]>
---
arch/Kconfig | 3 +++
arch/arm64/Kconfig | 2 +-
arch/x86/Kconfig | 4 +---
3 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/Kconfig b/arch/Kconfig
index c47b328eada0..d2f212dc8e72 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -577,6 +577,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
config HAVE_ARCH_HUGE_VMAP
bool
+config ARCH_WANT_HUGE_PMD_SHARE
+ bool
+
config HAVE_ARCH_SOFT_DIRTY
bool
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 4780eb7af842..dee7f750c42f 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -70,6 +70,7 @@ config ARM64
select ARCH_SUPPORTS_NUMA_BALANCING
select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
select ARCH_WANT_FRAME_POINTERS
+ select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
select ARCH_HAS_UBSAN_SANITIZE_ALL
select ARM_AMBA
select ARM_ARCH_TIMER
@@ -884,7 +885,6 @@ config SYS_SUPPORTS_HUGETLBFS
def_bool y
config ARCH_WANT_HUGE_PMD_SHARE
- def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
config ARCH_HAS_CACHE_LINE_SIZE
def_bool y
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 2bbbd4d1ba31..fa021ec38803 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -93,6 +93,7 @@ config X86
select ARCH_USE_QUEUED_SPINLOCKS
select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
select ARCH_WANTS_DYNAMIC_TASK_STRUCT
+ select ARCH_WANT_HUGE_PMD_SHARE
select ARCH_WANTS_THP_SWAP if X86_64
select BUILDTIME_EXTABLE_SORT
select CLKEVT_I8253
@@ -301,9 +302,6 @@ config ARCH_HIBERNATION_POSSIBLE
config ARCH_SUSPEND_POSSIBLE
def_bool y
-config ARCH_WANT_HUGE_PMD_SHARE
- def_bool y
-
config ARCH_WANT_GENERAL_HUGETLB
def_bool y
--
2.20.1
This patch implements both 4MB huge page support for 32bit kernel
and 2MB/1GB huge pages support for 64bit kernel.
Signed-off-by: Alexandre Ghiti <[email protected]>
---
arch/riscv/Kconfig | 8 ++++++
arch/riscv/include/asm/hugetlb.h | 18 +++++++++++++
arch/riscv/include/asm/page.h | 10 ++++++++
arch/riscv/include/asm/pgtable.h | 8 ++++--
arch/riscv/mm/Makefile | 2 ++
arch/riscv/mm/hugetlbpage.c | 44 ++++++++++++++++++++++++++++++++
6 files changed, 88 insertions(+), 2 deletions(-)
create mode 100644 arch/riscv/include/asm/hugetlb.h
create mode 100644 arch/riscv/mm/hugetlbpage.c
diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig
index ee32c66e1af3..2818ebc717b7 100644
--- a/arch/riscv/Kconfig
+++ b/arch/riscv/Kconfig
@@ -49,6 +49,8 @@ config RISCV
select ARCH_HAS_PTE_SPECIAL
select ARCH_HAS_MMIOWB
select HAVE_EBPF_JIT if 64BIT
+ select ARCH_HAS_GIGANTIC_PAGE
+ select ARCH_WANT_HUGE_PMD_SHARE if 64BIT
config MMU
def_bool y
@@ -63,6 +65,12 @@ config PAGE_OFFSET
default 0xffffffff80000000 if 64BIT && MAXPHYSMEM_2GB
default 0xffffffe000000000 if 64BIT && MAXPHYSMEM_128GB
+config ARCH_WANT_GENERAL_HUGETLB
+ def_bool y
+
+config SYS_SUPPORTS_HUGETLBFS
+ def_bool y
+
config STACKTRACE_SUPPORT
def_bool y
diff --git a/arch/riscv/include/asm/hugetlb.h b/arch/riscv/include/asm/hugetlb.h
new file mode 100644
index 000000000000..728a5db66597
--- /dev/null
+++ b/arch/riscv/include/asm/hugetlb.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_RISCV_HUGETLB_H
+#define _ASM_RISCV_HUGETLB_H
+
+#include <asm-generic/hugetlb.h>
+#include <asm/page.h>
+
+static inline int is_hugepage_only_range(struct mm_struct *mm,
+ unsigned long addr,
+ unsigned long len) {
+ return 0;
+}
+
+static inline void arch_clear_hugepage_flags(struct page *page)
+{
+}
+
+#endif /* _ASM_RISCV_HUGETLB_H */
diff --git a/arch/riscv/include/asm/page.h b/arch/riscv/include/asm/page.h
index 2a546a52f02a..4ef2936295aa 100644
--- a/arch/riscv/include/asm/page.h
+++ b/arch/riscv/include/asm/page.h
@@ -24,6 +24,16 @@
#define PAGE_SIZE (_AC(1, UL) << PAGE_SHIFT)
#define PAGE_MASK (~(PAGE_SIZE - 1))
+#ifdef CONFIG_64BIT
+#define HUGE_MAX_HSTATE 2
+#else
+#define HUGE_MAX_HSTATE 1
+#endif
+#define HPAGE_SHIFT PMD_SHIFT
+#define HPAGE_SIZE (_AC(1, UL) << HPAGE_SHIFT)
+#define HPAGE_MASK (~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
+
/*
* PAGE_OFFSET -- the first address of the first page of memory.
* When not using MMU this corresponds to the first free page in
diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h
index 1141364d990e..f3456fcdff92 100644
--- a/arch/riscv/include/asm/pgtable.h
+++ b/arch/riscv/include/asm/pgtable.h
@@ -121,7 +121,6 @@ static inline void pmd_clear(pmd_t *pmdp)
set_pmd(pmdp, __pmd(0));
}
-
static inline pgd_t pfn_pgd(unsigned long pfn, pgprot_t prot)
{
return __pgd((pfn << _PAGE_PFN_SHIFT) | pgprot_val(prot));
@@ -258,6 +257,11 @@ static inline pte_t pte_mkspecial(pte_t pte)
return __pte(pte_val(pte) | _PAGE_SPECIAL);
}
+static inline pte_t pte_mkhuge(pte_t pte)
+{
+ return pte;
+}
+
/* Modify page protection bits */
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
@@ -417,7 +421,7 @@ static inline void pgtable_cache_init(void)
#define VMALLOC_START (PAGE_OFFSET - VMALLOC_SIZE)
/*
- * Task size is 0x40000000000 for RV64 or 0xb800000 for RV32.
+ * Task size is 0x4000000000 for RV64 or 0xb800000 for RV32.
* Note that PGDIR_SIZE must evenly divide TASK_SIZE.
*/
#ifdef CONFIG_64BIT
diff --git a/arch/riscv/mm/Makefile b/arch/riscv/mm/Makefile
index 8db569141485..4ea2fe50ec63 100644
--- a/arch/riscv/mm/Makefile
+++ b/arch/riscv/mm/Makefile
@@ -11,3 +11,5 @@ obj-y += ioremap.o
obj-y += cacheflush.o
obj-y += context.o
obj-y += sifive_l2_cache.o
+
+obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
diff --git a/arch/riscv/mm/hugetlbpage.c b/arch/riscv/mm/hugetlbpage.c
new file mode 100644
index 000000000000..0d4747e9d5b5
--- /dev/null
+++ b/arch/riscv/mm/hugetlbpage.c
@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/hugetlb.h>
+#include <linux/err.h>
+
+int pud_huge(pud_t pud)
+{
+ return pud_present(pud) &&
+ (pud_val(pud) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC));
+}
+
+int pmd_huge(pmd_t pmd)
+{
+ return pmd_present(pmd) &&
+ (pmd_val(pmd) & (_PAGE_READ | _PAGE_WRITE | _PAGE_EXEC));
+}
+
+static __init int setup_hugepagesz(char *opt)
+{
+ unsigned long ps = memparse(opt, &opt);
+
+ if (ps == HPAGE_SIZE) {
+ hugetlb_add_hstate(HPAGE_SHIFT - PAGE_SHIFT);
+ } else if (IS_ENABLED(CONFIG_64BIT) && ps == PUD_SIZE) {
+ hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
+ } else {
+ hugetlb_bad_size();
+ pr_err("hugepagesz: Unsupported page size %lu M\n", ps >> 20);
+ return 0;
+ }
+
+ return 1;
+}
+__setup("hugepagesz=", setup_hugepagesz);
+
+#ifdef CONFIG_CONTIG_ALLOC
+static __init int gigantic_pages_init(void)
+{
+ /* With CONTIG_ALLOC, we can allocate gigantic pages at runtime */
+ if (IS_ENABLED(CONFIG_64BIT) && !size_to_hstate(1UL << PUD_SHIFT))
+ hugetlb_add_hstate(PUD_SHIFT - PAGE_SHIFT);
+ return 0;
+}
+arch_initcall(gigantic_pages_init);
+#endif
--
2.20.1
* Alexandre Ghiti <[email protected]> wrote:
> ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
> move this declaration in arch/Kconfig and make those architectures
> select it.
>
> Signed-off-by: Alexandre Ghiti <[email protected]>
> Reviewed-by: Palmer Dabbelt <[email protected]>
> ---
> arch/Kconfig | 3 +++
> arch/arm64/Kconfig | 2 +-
> arch/x86/Kconfig | 4 +---
> 3 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/arch/Kconfig b/arch/Kconfig
> index c47b328eada0..d2f212dc8e72 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -577,6 +577,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
> config HAVE_ARCH_HUGE_VMAP
> bool
>
> +config ARCH_WANT_HUGE_PMD_SHARE
> + bool
> +
> config HAVE_ARCH_SOFT_DIRTY
> bool
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 4780eb7af842..dee7f750c42f 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -70,6 +70,7 @@ config ARM64
> select ARCH_SUPPORTS_NUMA_BALANCING
> select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
> select ARCH_WANT_FRAME_POINTERS
> + select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
> select ARCH_HAS_UBSAN_SANITIZE_ALL
> select ARM_AMBA
> select ARM_ARCH_TIMER
> @@ -884,7 +885,6 @@ config SYS_SUPPORTS_HUGETLBFS
> def_bool y
>
> config ARCH_WANT_HUGE_PMD_SHARE
> - def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
>
> config ARCH_HAS_CACHE_LINE_SIZE
> def_bool y
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 2bbbd4d1ba31..fa021ec38803 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -93,6 +93,7 @@ config X86
> select ARCH_USE_QUEUED_SPINLOCKS
> select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
> select ARCH_WANTS_DYNAMIC_TASK_STRUCT
> + select ARCH_WANT_HUGE_PMD_SHARE
> select ARCH_WANTS_THP_SWAP if X86_64
> select BUILDTIME_EXTABLE_SORT
> select CLKEVT_I8253
> @@ -301,9 +302,6 @@ config ARCH_HIBERNATION_POSSIBLE
> config ARCH_SUSPEND_POSSIBLE
> def_bool y
>
> -config ARCH_WANT_HUGE_PMD_SHARE
> - def_bool y
> -
> config ARCH_WANT_GENERAL_HUGETLB
> def_bool y
Acked-by: Ingo Molnar <[email protected]>
Thanks,
Ingo
On 5/26/19 10:42 AM, Ingo Molnar wrote:
> * Alexandre Ghiti <[email protected]> wrote:
>
>> ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
>> move this declaration in arch/Kconfig and make those architectures
>> select it.
>>
>> Signed-off-by: Alexandre Ghiti <[email protected]>
>> Reviewed-by: Palmer Dabbelt <[email protected]>
>> ---
>> arch/Kconfig | 3 +++
>> arch/arm64/Kconfig | 2 +-
>> arch/x86/Kconfig | 4 +---
>> 3 files changed, 5 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/Kconfig b/arch/Kconfig
>> index c47b328eada0..d2f212dc8e72 100644
>> --- a/arch/Kconfig
>> +++ b/arch/Kconfig
>> @@ -577,6 +577,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
>> config HAVE_ARCH_HUGE_VMAP
>> bool
>>
>> +config ARCH_WANT_HUGE_PMD_SHARE
>> + bool
>> +
>> config HAVE_ARCH_SOFT_DIRTY
>> bool
>>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index 4780eb7af842..dee7f750c42f 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -70,6 +70,7 @@ config ARM64
>> select ARCH_SUPPORTS_NUMA_BALANCING
>> select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
>> select ARCH_WANT_FRAME_POINTERS
>> + select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
>> select ARCH_HAS_UBSAN_SANITIZE_ALL
>> select ARM_AMBA
>> select ARM_ARCH_TIMER
>> @@ -884,7 +885,6 @@ config SYS_SUPPORTS_HUGETLBFS
>> def_bool y
>>
>> config ARCH_WANT_HUGE_PMD_SHARE
>> - def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
>>
>> config ARCH_HAS_CACHE_LINE_SIZE
>> def_bool y
>> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
>> index 2bbbd4d1ba31..fa021ec38803 100644
>> --- a/arch/x86/Kconfig
>> +++ b/arch/x86/Kconfig
>> @@ -93,6 +93,7 @@ config X86
>> select ARCH_USE_QUEUED_SPINLOCKS
>> select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
>> select ARCH_WANTS_DYNAMIC_TASK_STRUCT
>> + select ARCH_WANT_HUGE_PMD_SHARE
>> select ARCH_WANTS_THP_SWAP if X86_64
>> select BUILDTIME_EXTABLE_SORT
>> select CLKEVT_I8253
>> @@ -301,9 +302,6 @@ config ARCH_HIBERNATION_POSSIBLE
>> config ARCH_SUSPEND_POSSIBLE
>> def_bool y
>>
>> -config ARCH_WANT_HUGE_PMD_SHARE
>> - def_bool y
>> -
>> config ARCH_WANT_GENERAL_HUGETLB
>> def_bool y
> Acked-by: Ingo Molnar <[email protected]>
Thanks !
Alex
>
> Thanks,
>
> Ingo
On Sun, May 26, 2019 at 08:50:37AM -0400, Alexandre Ghiti wrote:
> ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
> move this declaration in arch/Kconfig and make those architectures
> select it.
>
> Signed-off-by: Alexandre Ghiti <[email protected]>
> Reviewed-by: Palmer Dabbelt <[email protected]>
> ---
> arch/Kconfig | 3 +++
> arch/arm64/Kconfig | 2 +-
> arch/x86/Kconfig | 4 +---
> 3 files changed, 5 insertions(+), 4 deletions(-)
For arm64:
Acked-by: Catalin Marinas <[email protected]>
Hi Paul, Palmer,
Now Ingo and Catalin have acked their part, do you consider this patch
for inclusion ?
Thanks,
Alex
On 5/26/19 8:50 AM, Alexandre Ghiti wrote:
> This series is simply rebased on v5.2rc1 and I added the Reviewed-By
> from Palmer for the first patch, thanks for that.
>
> This series introduces hugetlbfs support for both riscv 32/64. Riscv32
> is architecturally limited to huge pages of size 4MB whereas riscv64 has
> 2MB/1G huge pages support. Transparent huge page support is not
> implemented here, I will submit another series later.
>
> As stated in "The RISC-V Instruction Set Manual, Volume II: Privileged
> Architecture", riscv page table entries are marked as non-leaf entries
> as soon as at least one of the R/W/X bit set:
>
> - pmd_huge/pud_huge check if one of those bits are set,
> - pte_mkhuge simply returns the same pte value and does not set any of
> the R/W/X bits
>
> This series was validated using libhugetlbfs testsuite ported to riscv64
> without linker script support.
> (https://github.com/AlexGhiti/libhugetlbfs.git, branch dev/alex/riscv).
>
> - libhugetlbfs testsuite on riscv64/2M:
> - brk_near_huge triggers an assert in malloc.c, does not on x86.
>
> - libhugetlbfs testsuite on riscv64/1G:
> - brk_near_huge triggers an assert in malloc.c, does not on x86.
> - mmap-gettest, mmap-cow: testsuite passes the number of default free
> pages as parameters and then fails for 1G which is not the default.
> Otherwise succeeds when given the right number of pages.
> - map_high_truncate_2 fails on x86 too: 0x60000000 is not 1G aligned
> and fails at line 694 of fs/hugetlbfs/inode.c.
> - heapshrink on 1G fails on x86 too, not investigated.
> - counters.sh on 1G fails on x86 too: alloc_surplus_huge_page returns
> NULL in case of gigantic pages.
> - icache-hygiene succeeds after patch #3 of this series which lowers
> the base address of mmap.
> - fallocate_stress.sh on 1G never ends, on x86 too, not investigated.
>
> - libhugetlbfs testsuite on riscv32/4M: kernel build passes, lacks
> libhugetlbfs support for 32bits.
>
> * Output for riscv64 2M and 1G libhugetbfs testsuite:
>
> zero_filesize_segment (2M: 64):
> zero_filesize_segment (1024M: 64):
> test_root (2M: 64): PASS
> test_root (1024M: 64): PASS
> meminfo_nohuge (2M: 64): PASS
> meminfo_nohuge (1024M: 64): PASS
> gethugepagesize (2M: 64): PASS
> gethugepagesize (1024M: 64): PASS
> gethugepagesizes (2M: 64): PASS
> gethugepagesizes (1024M: 64): PASS
> HUGETLB_VERBOSE=1 empty_mounts (2M: 64): PASS
> HUGETLB_VERBOSE=1 empty_mounts (1024M: 64): PASS
> HUGETLB_VERBOSE=1 large_mounts (2M: 64): PASS
> HUGETLB_VERBOSE=1 large_mounts (1024M: 64): PASS
> find_path (2M: 64): PASS
> find_path (1024M: 64): PASS
> unlinked_fd (2M: 64): PASS
> unlinked_fd (1024M: 64): PASS
> readback (2M: 64): PASS
> readback (1024M: 64): PASS
> truncate (2M: 64): PASS
> truncate (1024M: 64): PASS
> shared (2M: 64): PASS
> shared (1024M: 64): PASS
> mprotect (2M: 64): PASS
> mprotect (1024M: 64): PASS
> mlock (2M: 64): PASS
> mlock (1024M: 64): PASS
> misalign (2M: 64): PASS
> misalign (1024M: 64): PASS
> fallocate_basic.sh (2M: 64): PASS
> fallocate_basic.sh (1024M: 64): PASS
> fallocate_align.sh (2M: 64): PASS
> fallocate_align.sh (1024M: 64): PASS
> ptrace-write-hugepage (2M: 64): PASS
> ptrace-write-hugepage (1024M: 64): PASS
> icache-hygiene (2M: 64): PASS
> icache-hygiene (1024M: 64): PASS
> slbpacaflush (2M: 64): PASS (inconclusive)
> slbpacaflush (1024M: 64): PASS (inconclusive)
> straddle_4GB_static (2M: 64): PASS
> straddle_4GB_static (1024M: 64): PASS
> huge_at_4GB_normal_below_static (2M: 64): PASS
> huge_at_4GB_normal_below_static (1024M: 64): PASS
> huge_below_4GB_normal_above_static (2M: 64): PASS
> huge_below_4GB_normal_above_static (1024M: 64): PASS
> map_high_truncate_2 (2M: 64): PASS
> map_high_truncate_2 (1024M: 64): FAIL ftruncate(): Invalid
> argument
> misaligned_offset (2M: 64): PASS (inconclusive)
> misaligned_offset (1024M: 64): PASS (inconclusive)
> truncate_above_4GB (2M: 64): PASS
> truncate_above_4GB (1024M: 64): PASS
> brk_near_huge (2M: 64): brk_near_huge: malloc.c:2385: sysmalloc:
> Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned
> long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long)
> old_end & (pagesize - 1)) == 0)' failed.
> brk_near_huge (1024M: 64): brk_near_huge: malloc.c:2385: sysmalloc:
> Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned
> long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long)
> old_end & (pagesize - 1)) == 0)' failed.
> task-size-overrun (2M: 64): PASS
> task-size-overrun (1024M: 64): PASS
> stack_grow_into_huge (2M: 64): PASS
> stack_grow_into_huge (1024M: 64): PASS
> corrupt-by-cow-opt (2M: 64): PASS
> corrupt-by-cow-opt (1024M: 64): PASS
> noresv-preserve-resv-page (2M: 64): PASS
> noresv-preserve-resv-page (1024M: 64): PASS
> noresv-regarded-as-resv (2M: 64): PASS
> noresv-regarded-as-resv (1024M: 64): PASS
> readahead_reserve.sh (2M: 64): PASS
> readahead_reserve.sh (1024M: 64): PASS
> madvise_reserve.sh (2M: 64): PASS
> madvise_reserve.sh (1024M: 64): PASS
> fadvise_reserve.sh (2M: 64): PASS
> fadvise_reserve.sh (1024M: 64): PASS
> mremap-expand-slice-collision.sh (2M: 64): PASS
> mremap-expand-slice-collision.sh (1024M: 64): PASS
> mremap-fixed-normal-near-huge.sh (2M: 64): PASS
> mremap-fixed-normal-near-huge.sh (1024M: 64): PASS
> mremap-fixed-huge-near-normal.sh (2M: 64): PASS
> mremap-fixed-huge-near-normal.sh (1024M: 64): PASS
> set shmmax limit to 67108864
> shm-perms (2M: 64): PASS
> private (2M: 64): PASS
> private (1024M: 64): PASS
> fork-cow (2M: 64): PASS
> fork-cow (1024M: 64): PASS
> direct (2M: 64): Bad configuration: Failed to open direct-IO
> file: Invalid argument
> direct (1024M: 64): Bad configuration: Failed to open direct-IO
> file: File exists
> malloc (2M: 64): PASS
> malloc (1024M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc (2M: 64):
> PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc (1024M: 64):
> PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:none
> HUGETLB_MORECORE=yes malloc (2M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:none
> HUGETLB_MORECORE=yes malloc (1024M: 64):PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:malloc
> HUGETLB_MORECORE=yes malloc (2M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:malloc
> HUGETLB_MORECORE=yes malloc (1024M: 64): PASS
> malloc_manysmall (2M: 64): PASS
> malloc_manysmall (1024M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc_manysmall (2M:
> 64): PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc_manysmall (1024M:
> 64): PASS
> heapshrink (2M: 64): PASS
> heapshrink (1024M: 64): PASS
> LD_PRELOAD=libheapshrink.so heapshrink (2M: 64): PASS
> LD_PRELOAD=libheapshrink.so heapshrink (1024M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes heapshrink (2M: 64):
> PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes heapshrink (1024M: 64):
> PASS
> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE=yes
> heapshrink (2M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE=yes
> heapshrink (1024M: 64): PASS
> LD_PRELOAD=libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
> HUGETLB_MORECORE=yes heapshrink (2M: 64): PASS (inconclusive)
> LD_PRELOAD=libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
> HUGETLB_MORECORE=yes heapshrink (1024M: 64): PASS (inconclusive)
> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
> HUGETLB_MORECORE=yes heapshrink (2M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
> HUGETLB_MORECORE=yes heapshrink (1024M: 64): FAIL Heap did not
> shrink
> HUGETLB_VERBOSE=1 HUGETLB_MORECORE=yes heap-overflow (2M: 64): PASS
> HUGETLB_VERBOSE=1 HUGETLB_MORECORE=yes heap-overflow (1024M: 64):
> PASS
> HUGETLB_VERBOSE=0 linkhuge_nofd (2M: 64):
> HUGETLB_VERBOSE=0 linkhuge_nofd (1024M: 64):
> LD_PRELOAD=libhugetlbfs.so HUGETLB_VERBOSE=0 linkhuge_nofd (2M: 64):
> LD_PRELOAD=libhugetlbfs.so HUGETLB_VERBOSE=0 linkhuge_nofd (1024M: 64):
> linkhuge (2M: 64):
> linkhuge (1024M: 64):
> LD_PRELOAD=libhugetlbfs.so linkhuge (2M: 64):
> LD_PRELOAD=libhugetlbfs.so linkhuge (1024M: 64):
> linkhuge_rw (2M: 64):
> linkhuge_rw (1024M: 64):
> HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
> HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
> HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
> HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
> HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
> HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
> HUGETLB_ELFMAP=no linkhuge_rw (2M: 64):
> HUGETLB_ELFMAP=no linkhuge_rw (1024M: 64):
> HUGETLB_ELFMAP=R HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
> HUGETLB_ELFMAP=R HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
> HUGETLB_ELFMAP=W HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
> HUGETLB_ELFMAP=W HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
> HUGETLB_ELFMAP=RW HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
> HUGETLB_ELFMAP=RW HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
> HUGETLB_SHARE=0 HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
> HUGETLB_SHARE=0 HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
> HUGETLB_SHARE=1 HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
> HUGETLB_SHARE=1 HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
> HUGETLB_SHARE=0 HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
> HUGETLB_SHARE=0 HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
> HUGETLB_SHARE=1 HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
> HUGETLB_SHARE=1 HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
> HUGETLB_SHARE=0 HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
> HUGETLB_SHARE=0 HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
> HUGETLB_SHARE=1 HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
> HUGETLB_SHARE=1 HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
> chunk-overcommit (2M: 64): PASS
> chunk-overcommit (1024M: 64): PASS
> alloc-instantiate-race shared (2M: 64): PASS
> alloc-instantiate-race shared (1024M: 64): PASS
> alloc-instantiate-race private (2M: 64): PASS
> alloc-instantiate-race private (1024M: 64): PASS
> truncate_reserve_wraparound (2M: 64): PASS
> truncate_reserve_wraparound (1024M: 64): PASS
> truncate_sigbus_versus_oom (2M: 64): PASS
> truncate_sigbus_versus_oom (1024M: 64): PASS
> get_huge_pages (2M: 64): PASS
> get_huge_pages (1024M: 64): PASS
> shmoverride_linked (2M: 64): PASS
> HUGETLB_SHM=yes shmoverride_linked (2M: 64): PASS
> shmoverride_linked_static (2M: 64):
> HUGETLB_SHM=yes shmoverride_linked_static (2M: 64):
> LD_PRELOAD=libhugetlbfs.so shmoverride_unlinked (2M: 64): PASS
> LD_PRELOAD=libhugetlbfs.so HUGETLB_SHM=yes shmoverride_unlinked (2M:
> 64): PASS
> quota.sh (2M: 64): PASS
> quota.sh (1024M: 64): PASS
> counters.sh (2M: 64): PASS
> counters.sh (1024M: 64): FAIL mmap failed: Invalid argument
> mmap-gettest 10 35 (2M: 64): PASS
> mmap-gettest 10 35 (1024M: 64): FAIL Failed to mmap the hugetlb file:
> Cannot allocate memory
> mmap-cow 34 35 (2M: 64): PASS
> mmap-cow 34 35 (1024M: 64): FAIL Thread 15 (pid=514) failed
> set shmmax limit to 73400320
> shm-fork 10 17 (2M: 64): PASS
> set shmmax limit to 73400320
> shm-fork 10 35 (2M: 64): PASS
> set shmmax limit to 73400320
> shm-getraw 35 /dev/full (2M: 64): PASS
> fallocate_stress.sh (2M: 64): libgcc_s.so.1 must be installed for
> pthread_cancel to work
> fallocate_stress.sh (1024M: 64):
> ********** TEST SUMMARY
> * 2M 1024M
> * 32-bit 64-bit 32-bit 64-bit
> * Total testcases: 0 93 0 83
> * Skipped: 0 0 0 0
> * PASS: 0 69 0 56
> * FAIL: 0 0 0 5
> * Killed by signal: 0 1 0 2
> * Bad configuration: 0 1 0 1
> * Expected FAIL: 0 0 0 0
> * Unexpected PASS: 0 0 0 0
> * Test not present: 0 21 0 19
> * Strange test result: 0 1 0 0
> **********
>
> Changes in v2:
> - Merge comment fix about task size.
> - Patch about mmap base address was merged separately.
> - Rebased on top of linux-next where series about the capability
> to free gigantic pages regardless of the configuration was merged.
> - Add huge pmd sharing as suggested by Mike Kravetz.
> - Gigantic page hstate is automatically created if CONTIG_ALLOC is
> set, even if not explicitly asked for in command line, as suggested
> by Mike.
> - Replace #ifdef CONFIG_64BIT into IS_ENABLED(CONFIG_64BIT), as suggested
> by Christoph Hellwig.
>
> Alexandre Ghiti (2):
> x86, arm64: Move ARCH_WANT_HUGE_PMD_SHARE config in arch/Kconfig
> riscv: Introduce huge page support for 32/64bit kernel
>
> arch/Kconfig | 3 +++
> arch/arm64/Kconfig | 2 +-
> arch/riscv/Kconfig | 8 ++++++
> arch/riscv/include/asm/hugetlb.h | 18 +++++++++++++
> arch/riscv/include/asm/page.h | 10 ++++++++
> arch/riscv/include/asm/pgtable.h | 8 ++++--
> arch/riscv/mm/Makefile | 2 ++
> arch/riscv/mm/hugetlbpage.c | 44 ++++++++++++++++++++++++++++++++
> arch/x86/Kconfig | 4 +--
> 9 files changed, 93 insertions(+), 6 deletions(-)
> create mode 100644 arch/riscv/include/asm/hugetlb.h
> create mode 100644 arch/riscv/mm/hugetlbpage.c
>
On 6/13/19 1:18 AM, Alex Ghiti wrote:
> Hi Paul, Palmer,
>
> Now Ingo and Catalin have acked their part, do you consider this patch
> for inclusion ?
>
> Thanks,
>
> Alex
>
Hi Paul, Palmer,
Any thought about this patch ?
Thanks,
Alex
> On 5/26/19 8:50 AM, Alexandre Ghiti wrote:
>> This series is simply rebased on v5.2rc1 and I added the Reviewed-By
>> from Palmer for the first patch, thanks for that.
>>
>> This series introduces hugetlbfs support for both riscv 32/64. Riscv32
>> is architecturally limited to huge pages of size 4MB whereas riscv64 has
>> 2MB/1G huge pages support. Transparent huge page support is not
>> implemented here, I will submit another series later.
>> As stated in "The RISC-V Instruction Set Manual, Volume II: Privileged
>> Architecture", riscv page table entries are marked as non-leaf entries
>> as soon as at least one of the R/W/X bit set:
>> - pmd_huge/pud_huge check if one of those bits are set,
>> - pte_mkhuge simply returns the same pte value and does not set any of
>> ?? the R/W/X bits
>> This series was validated using libhugetlbfs testsuite ported to riscv64
>> without linker script support.
>> (https://github.com/AlexGhiti/libhugetlbfs.git, branch dev/alex/riscv).
>> - libhugetlbfs testsuite on riscv64/2M:
>> ?? - brk_near_huge triggers an assert in malloc.c, does not on x86.
>> - libhugetlbfs testsuite on riscv64/1G:
>> ?? - brk_near_huge triggers an assert in malloc.c, does not on x86.
>> ?? - mmap-gettest, mmap-cow: testsuite passes the number of default free
>> ???? pages as parameters and then fails for 1G which is not the default.
>> ???? Otherwise succeeds when given the right number of pages.
>> ?? - map_high_truncate_2 fails on x86 too: 0x60000000 is not 1G aligned
>> ???? and fails at line 694 of fs/hugetlbfs/inode.c.
>> ?? - heapshrink on 1G fails on x86 too, not investigated.
>> ?? - counters.sh on 1G fails on x86 too: alloc_surplus_huge_page returns
>> ???? NULL in case of gigantic pages.
>> ?? - icache-hygiene succeeds after patch #3 of this series which lowers
>> ???? the base address of mmap.
>> ?? - fallocate_stress.sh on 1G never ends, on x86 too, not investigated.
>> - libhugetlbfs testsuite on riscv32/4M: kernel build passes, lacks
>> ?? libhugetlbfs support for 32bits.
>> * Output for riscv64 2M and 1G libhugetbfs testsuite:
>> zero_filesize_segment (2M: 64):
>> zero_filesize_segment (1024M: 64):
>> test_root (2M: 64):???? PASS
>> test_root (1024M: 64):? PASS
>> meminfo_nohuge (2M: 64):??????? PASS
>> meminfo_nohuge (1024M: 64):???? PASS
>> gethugepagesize (2M: 64):?????? PASS
>> gethugepagesize (1024M: 64):??? PASS
>> gethugepagesizes (2M: 64):????? PASS
>> gethugepagesizes (1024M: 64):?? PASS
>> HUGETLB_VERBOSE=1 empty_mounts (2M: 64):??????? PASS
>> HUGETLB_VERBOSE=1 empty_mounts (1024M: 64):???? PASS
>> HUGETLB_VERBOSE=1 large_mounts (2M: 64):??????? PASS
>> HUGETLB_VERBOSE=1 large_mounts (1024M: 64):???? PASS
>> find_path (2M: 64):???? PASS
>> find_path (1024M: 64):? PASS
>> unlinked_fd (2M: 64):?? PASS
>> unlinked_fd (1024M: 64):??????? PASS
>> readback (2M: 64):????? PASS
>> readback (1024M: 64):?? PASS
>> truncate (2M: 64):????? PASS
>> truncate (1024M: 64):?? PASS
>> shared (2M: 64):??????? PASS
>> shared (1024M: 64):???? PASS
>> mprotect (2M: 64):????? PASS
>> mprotect (1024M: 64):?? PASS
>> mlock (2M: 64): PASS
>> mlock (1024M: 64):????? PASS
>> misalign (2M: 64):????? PASS
>> misalign (1024M: 64):?? PASS
>> fallocate_basic.sh (2M: 64):??? PASS
>> fallocate_basic.sh (1024M: 64): PASS
>> fallocate_align.sh (2M: 64):??? PASS
>> fallocate_align.sh (1024M: 64): PASS
>> ptrace-write-hugepage (2M: 64): PASS
>> ptrace-write-hugepage (1024M: 64):????? PASS
>> icache-hygiene (2M: 64):??????? PASS
>> icache-hygiene (1024M: 64):???? PASS
>> slbpacaflush (2M: 64):? PASS (inconclusive)
>> slbpacaflush (1024M: 64):?????? PASS (inconclusive)
>> straddle_4GB_static (2M: 64):?? PASS
>> straddle_4GB_static (1024M: 64):??????? PASS
>> huge_at_4GB_normal_below_static (2M: 64):?????? PASS
>> huge_at_4GB_normal_below_static (1024M: 64):??? PASS
>> huge_below_4GB_normal_above_static (2M: 64):??? PASS
>> huge_below_4GB_normal_above_static (1024M: 64): PASS
>> map_high_truncate_2 (2M: 64):?? PASS
>> map_high_truncate_2 (1024M: 64):??????? FAIL??? ftruncate(): Invalid
>> argument
>> misaligned_offset (2M: 64):???? PASS (inconclusive)
>> misaligned_offset (1024M: 64):? PASS (inconclusive)
>> truncate_above_4GB (2M: 64):??? PASS
>> truncate_above_4GB (1024M: 64): PASS
>> brk_near_huge (2M: 64): brk_near_huge: malloc.c:2385: sysmalloc:
>> Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned
>> long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long)
>> old_end & (pagesize - 1)) == 0)' failed.
>> brk_near_huge (1024M: 64):????? brk_near_huge: malloc.c:2385: sysmalloc:
>> Assertion `(old_top == initial_top (av) && old_size == 0) || ((unsigned
>> long) (old_size) >= MINSIZE && prev_inuse (old_top) && ((unsigned long)
>> old_end & (pagesize - 1)) == 0)' failed.
>> task-size-overrun (2M: 64):???? PASS
>> task-size-overrun (1024M: 64):? PASS
>> stack_grow_into_huge (2M: 64):?? PASS
>> stack_grow_into_huge (1024M: 64): PASS
>> corrupt-by-cow-opt (2M: 64):??? PASS
>> corrupt-by-cow-opt (1024M: 64): PASS
>> noresv-preserve-resv-page (2M: 64):???? PASS
>> noresv-preserve-resv-page (1024M: 64):? PASS
>> noresv-regarded-as-resv (2M: 64):?????? PASS
>> noresv-regarded-as-resv (1024M: 64):??? PASS
>> readahead_reserve.sh (2M: 64):? PASS
>> readahead_reserve.sh (1024M: 64):?????? PASS
>> madvise_reserve.sh (2M: 64):??? PASS
>> madvise_reserve.sh (1024M: 64): PASS
>> fadvise_reserve.sh (2M: 64):??? PASS
>> fadvise_reserve.sh (1024M: 64): PASS
>> mremap-expand-slice-collision.sh (2M: 64):????? PASS
>> mremap-expand-slice-collision.sh (1024M: 64):?? PASS
>> mremap-fixed-normal-near-huge.sh (2M: 64):????? PASS
>> mremap-fixed-normal-near-huge.sh (1024M: 64):?? PASS
>> mremap-fixed-huge-near-normal.sh (2M: 64):????? PASS
>> mremap-fixed-huge-near-normal.sh (1024M: 64):?? PASS
>> set shmmax limit to 67108864
>> shm-perms (2M: 64):???? PASS
>> private (2M: 64):?????? PASS
>> private (1024M: 64):??? PASS
>> fork-cow (2M: 64):????? PASS
>> fork-cow (1024M: 64):?? PASS
>> direct (2M: 64):??????? Bad configuration: Failed to open direct-IO
>> file: Invalid argument
>> direct (1024M: 64):???? Bad configuration: Failed to open direct-IO
>> file: File exists
>> malloc (2M: 64):??????? PASS
>> malloc (1024M: 64):???? PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc (2M: 64):
>> PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc (1024M: 64):
>> PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:none
>> HUGETLB_MORECORE=yes malloc (2M: 64):????? PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:none
>> HUGETLB_MORECORE=yes malloc (1024M: 64):PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:malloc
>> HUGETLB_MORECORE=yes malloc (2M: 64):??? PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_RESTRICT_EXE=unknown:malloc
>> HUGETLB_MORECORE=yes malloc (1024M: 64): PASS
>> malloc_manysmall (2M: 64):????? PASS
>> malloc_manysmall (1024M: 64):?? PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc_manysmall (2M:
>> 64):????? PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes malloc_manysmall (1024M:
>> 64):?? PASS
>> heapshrink (2M: 64):??? PASS
>> heapshrink (1024M: 64): PASS
>> LD_PRELOAD=libheapshrink.so heapshrink (2M: 64):??????? PASS
>> LD_PRELOAD=libheapshrink.so heapshrink (1024M: 64):???? PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes heapshrink (2M: 64):
>> PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_MORECORE=yes heapshrink (1024M: 64):
>> PASS
>> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE=yes
>> heapshrink (2M: 64):?? PASS
>> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE=yes
>> heapshrink (1024M: 64):??????? PASS
>> LD_PRELOAD=libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
>> HUGETLB_MORECORE=yes heapshrink (2M: 64):?????? PASS (inconclusive)
>> LD_PRELOAD=libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
>> HUGETLB_MORECORE=yes heapshrink (1024M: 64):??? PASS (inconclusive)
>> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
>> HUGETLB_MORECORE=yes heapshrink (2M: 64):?????? PASS
>> LD_PRELOAD=libhugetlbfs.so libheapshrink.so HUGETLB_MORECORE_SHRINK=yes
>> HUGETLB_MORECORE=yes heapshrink (1024M: 64):??? FAIL??? Heap did not
>> shrink
>> HUGETLB_VERBOSE=1 HUGETLB_MORECORE=yes heap-overflow (2M: 64): PASS
>> HUGETLB_VERBOSE=1 HUGETLB_MORECORE=yes heap-overflow (1024M: 64):
>> PASS
>> HUGETLB_VERBOSE=0 linkhuge_nofd (2M: 64):
>> HUGETLB_VERBOSE=0 linkhuge_nofd (1024M: 64):
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_VERBOSE=0 linkhuge_nofd (2M: 64):
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_VERBOSE=0 linkhuge_nofd (1024M: 64):
>> linkhuge (2M: 64):
>> linkhuge (1024M: 64):
>> LD_PRELOAD=libhugetlbfs.so linkhuge (2M: 64):
>> LD_PRELOAD=libhugetlbfs.so linkhuge (1024M: 64):
>> linkhuge_rw (2M: 64):
>> linkhuge_rw (1024M: 64):
>> HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
>> HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
>> HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
>> HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
>> HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
>> HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
>> HUGETLB_ELFMAP=no linkhuge_rw (2M: 64):
>> HUGETLB_ELFMAP=no linkhuge_rw (1024M: 64):
>> HUGETLB_ELFMAP=R HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
>> HUGETLB_ELFMAP=R HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
>> HUGETLB_ELFMAP=W HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
>> HUGETLB_ELFMAP=W HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
>> HUGETLB_ELFMAP=RW HUGETLB_MINIMAL_COPY=no linkhuge_rw (2M: 64):
>> HUGETLB_ELFMAP=RW HUGETLB_MINIMAL_COPY=no linkhuge_rw (1024M: 64):
>> HUGETLB_SHARE=0 HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
>> HUGETLB_SHARE=0 HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
>> HUGETLB_SHARE=1 HUGETLB_ELFMAP=R linkhuge_rw (2M: 64):
>> HUGETLB_SHARE=1 HUGETLB_ELFMAP=R linkhuge_rw (1024M: 64):
>> HUGETLB_SHARE=0 HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
>> HUGETLB_SHARE=0 HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
>> HUGETLB_SHARE=1 HUGETLB_ELFMAP=W linkhuge_rw (2M: 64):
>> HUGETLB_SHARE=1 HUGETLB_ELFMAP=W linkhuge_rw (1024M: 64):
>> HUGETLB_SHARE=0 HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
>> HUGETLB_SHARE=0 HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
>> HUGETLB_SHARE=1 HUGETLB_ELFMAP=RW linkhuge_rw (2M: 64):
>> HUGETLB_SHARE=1 HUGETLB_ELFMAP=RW linkhuge_rw (1024M: 64):
>> chunk-overcommit (2M: 64):????? PASS
>> chunk-overcommit (1024M: 64):?? PASS
>> alloc-instantiate-race shared (2M: 64): PASS
>> alloc-instantiate-race shared (1024M: 64):????? PASS
>> alloc-instantiate-race private (2M: 64):??????? PASS
>> alloc-instantiate-race private (1024M: 64):???? PASS
>> truncate_reserve_wraparound (2M: 64):?? PASS
>> truncate_reserve_wraparound (1024M: 64):??????? PASS
>> truncate_sigbus_versus_oom (2M: 64):??? PASS
>> truncate_sigbus_versus_oom (1024M: 64): PASS
>> get_huge_pages (2M: 64):??????? PASS
>> get_huge_pages (1024M: 64):???? PASS
>> shmoverride_linked (2M: 64):??? PASS
>> HUGETLB_SHM=yes shmoverride_linked (2M: 64):??? PASS
>> shmoverride_linked_static (2M: 64):
>> HUGETLB_SHM=yes shmoverride_linked_static (2M: 64):
>> LD_PRELOAD=libhugetlbfs.so shmoverride_unlinked (2M: 64): PASS
>> LD_PRELOAD=libhugetlbfs.so HUGETLB_SHM=yes shmoverride_unlinked (2M:
>> 64):?????? PASS
>> quota.sh (2M: 64):????? PASS
>> quota.sh (1024M: 64):?? PASS
>> counters.sh (2M: 64):?? PASS
>> counters.sh (1024M: 64):??????? FAIL mmap failed: Invalid argument
>> mmap-gettest 10 35 (2M: 64):??? PASS
>> mmap-gettest 10 35 (1024M: 64): FAIL??? Failed to mmap the hugetlb file:
>> Cannot allocate memory
>> mmap-cow 34 35 (2M: 64):??????? PASS
>> mmap-cow 34 35 (1024M: 64):???? FAIL??? Thread 15 (pid=514) failed
>> set shmmax limit to 73400320
>> shm-fork 10 17 (2M: 64):??????? PASS
>> set shmmax limit to 73400320
>> shm-fork 10 35 (2M: 64):??????? PASS
>> set shmmax limit to 73400320
>> shm-getraw 35 /dev/full (2M: 64):?????? PASS
>> fallocate_stress.sh (2M: 64):?? libgcc_s.so.1 must be installed for
>> pthread_cancel to work
>> fallocate_stress.sh (1024M: 64):
>> ********** TEST SUMMARY
>> *????????????????????? 2M???????????? 1024M
>> *????????????????????? 32-bit 64-bit? 32-bit 64-bit
>> *???? Total testcases:???? 0???? 93?????? 0???? 83
>> *???????????? Skipped:???? 0????? 0?????? 0????? 0
>> *??????????????? PASS:???? 0???? 69?????? 0???? 56
>> *??????????????? FAIL:???? 0????? 0?????? 0????? 5
>> *??? Killed by signal:???? 0????? 1?????? 0????? 2
>> *?? Bad configuration:???? 0????? 1?????? 0????? 1
>> *?????? Expected FAIL:???? 0????? 0?????? 0????? 0
>> *???? Unexpected PASS:???? 0????? 0?????? 0????? 0
>> *??? Test not present:???? 0???? 21?????? 0???? 19
>> * Strange test result:???? 0????? 1?????? 0????? 0
>> **********
>> Changes in v2:
>> ?? - Merge comment fix about task size.
>> ?? - Patch about mmap base address was merged separately.
>> ?? - Rebased on top of linux-next where series about the capability
>> ???? to free gigantic pages regardless of the configuration was merged.
>> ?? - Add huge pmd sharing as suggested by Mike Kravetz.
>> ?? - Gigantic page hstate is automatically created if CONTIG_ALLOC is
>> ???? set, even if not explicitly asked for in command line, as suggested
>> ???? by Mike.
>> ?? - Replace #ifdef CONFIG_64BIT into IS_ENABLED(CONFIG_64BIT), as
>> suggested
>> ???? by Christoph Hellwig.
>>
>> Alexandre Ghiti (2):
>> ?? x86, arm64: Move ARCH_WANT_HUGE_PMD_SHARE config in arch/Kconfig
>> ?? riscv: Introduce huge page support for 32/64bit kernel
>>
>> ? arch/Kconfig???????????????????? |? 3 +++
>> ? arch/arm64/Kconfig?????????????? |? 2 +-
>> ? arch/riscv/Kconfig?????????????? |? 8 ++++++
>> ? arch/riscv/include/asm/hugetlb.h | 18 +++++++++++++
>> ? arch/riscv/include/asm/page.h??? | 10 ++++++++
>> ? arch/riscv/include/asm/pgtable.h |? 8 ++++--
>> ? arch/riscv/mm/Makefile?????????? |? 2 ++
>> ? arch/riscv/mm/hugetlbpage.c????? | 44 ++++++++++++++++++++++++++++++++
>> ? arch/x86/Kconfig???????????????? |? 4 +--
>> ? 9 files changed, 93 insertions(+), 6 deletions(-)
>> ? create mode 100644 arch/riscv/include/asm/hugetlb.h
>> ? create mode 100644 arch/riscv/mm/hugetlbpage.c
>>
On 2019/5/26 20:50, Alexandre Ghiti wrote:
> ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
> move this declaration in arch/Kconfig and make those architectures
> select it.
>
> Signed-off-by: Alexandre Ghiti <[email protected]>
> Reviewed-by: Palmer Dabbelt <[email protected]>
> ---
> arch/Kconfig | 3 +++
> arch/arm64/Kconfig | 2 +-
> arch/x86/Kconfig | 4 +---
> 3 files changed, 5 insertions(+), 4 deletions(-)
>
> diff --git a/arch/Kconfig b/arch/Kconfig
> index c47b328eada0..d2f212dc8e72 100644
> --- a/arch/Kconfig
> +++ b/arch/Kconfig
> @@ -577,6 +577,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
> config HAVE_ARCH_HUGE_VMAP
> bool
>
> +config ARCH_WANT_HUGE_PMD_SHARE
> + bool
> +
> config HAVE_ARCH_SOFT_DIRTY
> bool
>
> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
> index 4780eb7af842..dee7f750c42f 100644
> --- a/arch/arm64/Kconfig
> +++ b/arch/arm64/Kconfig
> @@ -70,6 +70,7 @@ config ARM64
> select ARCH_SUPPORTS_NUMA_BALANCING
> select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
> select ARCH_WANT_FRAME_POINTERS
> + select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
> select ARCH_HAS_UBSAN_SANITIZE_ALL
> select ARM_AMBA
> select ARM_ARCH_TIMER
> @@ -884,7 +885,6 @@ config SYS_SUPPORTS_HUGETLBFS
> def_bool y
>
> config ARCH_WANT_HUGE_PMD_SHARE
> - def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
Why not remove config ARCH_WANT_HUGE_PMD_SHARE as well?
Did I miss something?
Thanks
Hanjun
On 6/30/19 9:58 PM, Hanjun Guo wrote:
> On 2019/5/26 20:50, Alexandre Ghiti wrote:
>> ARCH_WANT_HUGE_PMD_SHARE config was declared in both architectures:
>> move this declaration in arch/Kconfig and make those architectures
>> select it.
>>
>> Signed-off-by: Alexandre Ghiti <[email protected]>
>> Reviewed-by: Palmer Dabbelt <[email protected]>
>> ---
>> arch/Kconfig | 3 +++
>> arch/arm64/Kconfig | 2 +-
>> arch/x86/Kconfig | 4 +---
>> 3 files changed, 5 insertions(+), 4 deletions(-)
>>
>> diff --git a/arch/Kconfig b/arch/Kconfig
>> index c47b328eada0..d2f212dc8e72 100644
>> --- a/arch/Kconfig
>> +++ b/arch/Kconfig
>> @@ -577,6 +577,9 @@ config HAVE_ARCH_TRANSPARENT_HUGEPAGE_PUD
>> config HAVE_ARCH_HUGE_VMAP
>> bool
>>
>> +config ARCH_WANT_HUGE_PMD_SHARE
>> + bool
>> +
>> config HAVE_ARCH_SOFT_DIRTY
>> bool
>>
>> diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
>> index 4780eb7af842..dee7f750c42f 100644
>> --- a/arch/arm64/Kconfig
>> +++ b/arch/arm64/Kconfig
>> @@ -70,6 +70,7 @@ config ARM64
>> select ARCH_SUPPORTS_NUMA_BALANCING
>> select ARCH_WANT_COMPAT_IPC_PARSE_VERSION
>> select ARCH_WANT_FRAME_POINTERS
>> + select ARCH_WANT_HUGE_PMD_SHARE if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
>> select ARCH_HAS_UBSAN_SANITIZE_ALL
>> select ARM_AMBA
>> select ARM_ARCH_TIMER
>> @@ -884,7 +885,6 @@ config SYS_SUPPORTS_HUGETLBFS
>> def_bool y
>>
>> config ARCH_WANT_HUGE_PMD_SHARE
>> - def_bool y if ARM64_4K_PAGES || (ARM64_16K_PAGES && !ARM64_VA_BITS_36)
> Why not remove config ARCH_WANT_HUGE_PMD_SHARE as well?
> Did I miss something?
You're totally right ! Thanks for noticing,
Alex
> Thanks
> Hanjun
>