Theses patches unify the fixmap_(32|64).h into fixmap.h
Some things was left with '#ifdef CONFIG_X86_(32|64)' because first we
need to integrate things like vsyscall, efi, pci_mmconfig, FIXADDR_TOP
and FIX_WP_TEST.
Signed-off-by: Gustavo F. Padovan <[email protected]>
Acked-by: Glauber Costa <[email protected]>
Rename __FIXADDR_SIZE to FIXADDR_SIZE
and __FIXADDR_BOOT_SIZE to FIXADDR_BOOT_SIZE.
Signed-off-by: Gustavo F. Padovan <[email protected]>
Acked-by: Glauber Costa <[email protected]>
---
arch/x86/include/asm/fixmap_32.h | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/include/asm/fixmap_32.h b/arch/x86/include/asm/fixmap_32.h
index 09f29ab..5d533f0 100644
--- a/arch/x86/include/asm/fixmap_32.h
+++ b/arch/x86/include/asm/fixmap_32.h
@@ -114,10 +114,10 @@ extern void reserve_top_address(unsigned long reserve);
#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP)
-#define __FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
-#define __FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - __FIXADDR_SIZE)
-#define FIXADDR_BOOT_START (FIXADDR_TOP - __FIXADDR_BOOT_SIZE)
+#define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+#define FIXADDR_BOOT_START (FIXADDR_TOP - FIXADDR_BOOT_SIZE)
#endif /* !__ASSEMBLY__ */
#endif /* _ASM_X86_FIXMAP_32_H */
--
1.5.6.4
Now, with these macros, x86_64 code can know where start the
permanent and non-permanent fixed mapped address.
This patch make these macros equal fixmap_32.h for future
x86 integration.
Signed-off-by: Gustavo F. Padovan <[email protected]>
Acked-by: Glauber Costa <[email protected]>
---
arch/x86/include/asm/fixmap_64.h | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
index 00a30ab..678b9c5 100644
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -73,8 +73,11 @@ enum fixed_addresses {
};
#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE)
-#define FIXADDR_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+
+#define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+#define FIXADDR_BOOT_START (FIXADDR_TOP - FIXADDR_BOOT_SIZE)
/* Only covers 32bit vsyscalls currently. Need another set for 64bit. */
#define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL)
--
1.5.6.4
Only for later x86 integration.
Signed-off-by: Gustavo F. Padovan <[email protected]>
Acked-by: Glauber Costa <[email protected]>
---
arch/x86/include/asm/fixmap_64.h | 2 ++
arch/x86/mm/pgtable.c | 18 ++++++++++++++++++
arch/x86/mm/pgtable_32.c | 16 ----------------
3 files changed, 20 insertions(+), 16 deletions(-)
diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
index 678b9c5..773b657 100644
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -72,6 +72,8 @@ enum fixed_addresses {
__end_of_fixed_addresses
};
+extern void reserve_top_address(unsigned long reserve);
+
#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE)
#define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 86f2ffc..5b7c7c8 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -313,6 +313,24 @@ int ptep_clear_flush_young(struct vm_area_struct *vma,
return young;
}
+/**
+ * reserve_top_address - reserves a hole in the top of kernel address space
+ * @reserve - size of hole to reserve
+ *
+ * Can be used to relocate the fixmap area and poke a hole in the top
+ * of kernel address space to make room for a hypervisor.
+ */
+void __init reserve_top_address(unsigned long reserve)
+{
+#ifdef CONFIG_X86_32
+ BUG_ON(fixmaps_set > 0);
+ printk(KERN_INFO "Reserving virtual address space above 0x%08x\n",
+ (int)-reserve);
+ __FIXADDR_TOP = -reserve - PAGE_SIZE;
+ __VMALLOC_RESERVE += reserve;
+#endif
+}
+
int fixmaps_set;
void __native_set_fixmap(enum fixed_addresses idx, pte_t pte)
diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 0951db9..c3cf6e1 100644
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -97,22 +97,6 @@ void set_pmd_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
unsigned long __FIXADDR_TOP = 0xfffff000;
EXPORT_SYMBOL(__FIXADDR_TOP);
-/**
- * reserve_top_address - reserves a hole in the top of kernel address space
- * @reserve - size of hole to reserve
- *
- * Can be used to relocate the fixmap area and poke a hole in the top
- * of kernel address space to make room for a hypervisor.
- */
-void __init reserve_top_address(unsigned long reserve)
-{
- BUG_ON(fixmaps_set > 0);
- printk(KERN_INFO "Reserving virtual address space above 0x%08x\n",
- (int)-reserve);
- __FIXADDR_TOP = -reserve - PAGE_SIZE;
- __VMALLOC_RESERVE += reserve;
-}
-
/*
* vmalloc=size forces the vmalloc area to be exactly 'size'
* bytes. This can be used to increase (or decrease) the
--
1.5.6.4
Add CONFIG_X86_{LOCAL,IO}_APIC to enum fixed_address.
FIX_APIC_BASE is used only when CONFIG_X86_LOCAL_APIC is
enabled and FIX_IO_APIC_BASE_* are used only when
CONFIG_X86_IO_APIC is enabled.
Signed-off-by: Gustavo F. Padovan <[email protected]>
Acked-by: Glauber Costa <[email protected]>
---
arch/x86/include/asm/fixmap_64.h | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
index 773b657..8a328fc 100644
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -40,9 +40,13 @@ enum fixed_addresses {
VSYSCALL_HPET,
FIX_DBGP_BASE,
FIX_EARLYCON_MEM_BASE,
+#ifdef CONFIG_X86_LOCAL_APIC
FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
+#endif
+#ifdef CONFIG_X86_IO_APIC
FIX_IO_APIC_BASE_0,
FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
+#endif
FIX_EFI_IO_MAP_LAST_PAGE,
FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE
+ MAX_EFI_IO_PAGES - 1,
--
1.5.6.4
FIX_EFI_IO_MAP_FIRST_PAGE is used only when EFI is enabled.
Signed-off-by: Gustavo F. Padovan <[email protected]>
Acked-by: Glauber Costa <[email protected]>
---
arch/x86/include/asm/fixmap_64.h | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
index 8a328fc..5dc7941 100644
--- a/arch/x86/include/asm/fixmap_64.h
+++ b/arch/x86/include/asm/fixmap_64.h
@@ -47,9 +47,11 @@ enum fixed_addresses {
FIX_IO_APIC_BASE_0,
FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
#endif
+#ifdef CONFIG_EFI
FIX_EFI_IO_MAP_LAST_PAGE,
FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE
+ MAX_EFI_IO_PAGES - 1,
+#endif
#ifdef CONFIG_PARAVIRT
FIX_PARAVIRT_BOOTMAP,
#endif
--
1.5.6.4
This patches unify fixmap_32.h and fixmap_64.h into fixmap.h.
Things that we can't merge now are using CONFIG_X86_{32,64}
(e.g.:vsyscall and EFI)
Signed-off-by: Gustavo F. Padovan <[email protected]>
Acked-by: Glauber Costa <[email protected]>
---
arch/x86/include/asm/fixmap.h | 156 +++++++++++++++++++++++++++++++++++++-
arch/x86/include/asm/fixmap_32.h | 123 ------------------------------
arch/x86/include/asm/fixmap_64.h | 94 -----------------------
3 files changed, 154 insertions(+), 219 deletions(-)
delete mode 100644 arch/x86/include/asm/fixmap_32.h
delete mode 100644 arch/x86/include/asm/fixmap_64.h
diff --git a/arch/x86/include/asm/fixmap.h b/arch/x86/include/asm/fixmap.h
index 8668a94..f400f3a 100644
--- a/arch/x86/include/asm/fixmap.h
+++ b/arch/x86/include/asm/fixmap.h
@@ -1,11 +1,162 @@
+/*
+ * fixmap.h: compile-time virtual memory allocation
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (C) 1998 Ingo Molnar
+ *
+ * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
+ */
+
#ifndef _ASM_X86_FIXMAP_H
#define _ASM_X86_FIXMAP_H
+#ifndef __ASSEMBLY__
+#include <linux/kernel.h>
+#include <asm/acpi.h>
+#include <asm/apicdef.h>
+#include <asm/page.h>
+#ifdef CONFIG_HIGHMEM
+#include <linux/threads.h>
+#include <asm/kmap_types.h>
+#endif
+#ifdef CONFIG_X86_64
+#include <asm/vsyscall.h>
+#ifdef CONFIG_EFI
+#include <asm/efi.h>
+#endif
+#endif
+
+/*
+ * We can't declare FIXADDR_TOP as variable for x86_64 because vsyscall
+ * uses fixmaps that relies on FIXADDR_TOP for proper address calculation.
+ * Because of this, FIXADDR_TOP x86 integration was left as later work.
+ */
#ifdef CONFIG_X86_32
-# include "fixmap_32.h"
+/* used by vmalloc.c, vsyscall.lds.S.
+ *
+ * Leave one empty page between vmalloc'ed areas and
+ * the start of the fixmap.
+ */
+extern unsigned long __FIXADDR_TOP;
+#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP)
+
+#define FIXADDR_USER_START __fix_to_virt(FIX_VDSO)
+#define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1)
#else
-# include "fixmap_64.h"
+#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE)
+
+/* Only covers 32bit vsyscalls currently. Need another set for 64bit. */
+#define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL)
+#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE)
+#endif
+
+
+/*
+ * Here we define all the compile-time 'special' virtual
+ * addresses. The point is to have a constant address at
+ * compile time, but to set the physical address only
+ * in the boot process.
+ * for x86_32: We allocate these special addresses
+ * from the end of virtual memory (0xfffff000) backwards.
+ * Also this lets us do fail-safe vmalloc(), we
+ * can guarantee that these special addresses and
+ * vmalloc()-ed addresses never overlap.
+ *
+ * these 'compile-time allocated' memory buffers are
+ * fixed-size 4k pages. (or larger if used with an increment
+ * highger than 1) use fixmap_set(idx,phys) to associate
+ * physical memory with fixmap indices.
+ *
+ * TLB entries of such buffers will not be flushed across
+ * task switches.
+ */
+
+enum fixed_addresses {
+#ifdef CONFIG_X86_32
+ FIX_HOLE,
+ FIX_VDSO,
+#else
+ VSYSCALL_LAST_PAGE,
+ VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE
+ + ((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1,
+ VSYSCALL_HPET,
+#endif
+ FIX_DBGP_BASE,
+ FIX_EARLYCON_MEM_BASE,
+#ifdef CONFIG_X86_LOCAL_APIC
+ FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
#endif
+#ifdef CONFIG_X86_IO_APIC
+ FIX_IO_APIC_BASE_0,
+ FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
+#endif
+#ifdef CONFIG_X86_64
+#ifdef CONFIG_EFI
+ FIX_EFI_IO_MAP_LAST_PAGE,
+ FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE
+ + MAX_EFI_IO_PAGES - 1,
+#endif
+#endif
+#ifdef CONFIG_X86_VISWS_APIC
+ FIX_CO_CPU, /* Cobalt timer */
+ FIX_CO_APIC, /* Cobalt APIC Redirection Table */
+ FIX_LI_PCIA, /* Lithium PCI Bridge A */
+ FIX_LI_PCIB, /* Lithium PCI Bridge B */
+#endif
+#ifdef CONFIG_X86_F00F_BUG
+ FIX_F00F_IDT, /* Virtual mapping for IDT */
+#endif
+#ifdef CONFIG_X86_CYCLONE_TIMER
+ FIX_CYCLONE_TIMER, /*cyclone timer register*/
+#endif
+#ifdef CONFIG_HIGHMEM
+ FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
+ FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
+#endif
+#ifdef CONFIG_X86_32
+#ifdef CONFIG_PCI_MMCONFIG
+ FIX_PCIE_MCFG,
+#endif
+#endif
+#ifdef CONFIG_PARAVIRT
+ FIX_PARAVIRT_BOOTMAP,
+#endif
+ __end_of_permanent_fixed_addresses,
+#ifdef CONFIG_ACPI
+ FIX_ACPI_BEGIN,
+ FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
+#endif
+#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
+ FIX_OHCI1394_BASE,
+#endif
+ /*
+ * 256 temporary boot-time mappings, used by early_ioremap(),
+ * before ioremap() is functional.
+ *
+ * We round it up to the next 256 pages boundary so that we
+ * can have a single pgd entry and a single pte table:
+ */
+#define NR_FIX_BTMAPS 64
+#define FIX_BTMAPS_SLOTS 4
+ FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 256 -
+ (__end_of_permanent_fixed_addresses & 255),
+ FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_SLOTS - 1,
+#ifdef CONFIG_X86_32
+ FIX_WP_TEST,
+#endif
+ __end_of_fixed_addresses
+};
+
+
+extern void reserve_top_address(unsigned long reserve);
+
+#define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
+#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
+#define FIXADDR_BOOT_START (FIXADDR_TOP - FIXADDR_BOOT_SIZE)
extern int fixmaps_set;
@@ -65,4 +216,5 @@ static inline unsigned long virt_to_fix(const unsigned long vaddr)
BUG_ON(vaddr >= FIXADDR_TOP || vaddr < FIXADDR_START);
return __virt_to_fix(vaddr);
}
+#endif /* !__ASSEMBLY__ */
#endif /* _ASM_X86_FIXMAP_H */
diff --git a/arch/x86/include/asm/fixmap_32.h b/arch/x86/include/asm/fixmap_32.h
deleted file mode 100644
index 5d533f0..0000000
--- a/arch/x86/include/asm/fixmap_32.h
+++ /dev/null
@@ -1,123 +0,0 @@
-/*
- * fixmap.h: compile-time virtual memory allocation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998 Ingo Molnar
- *
- * Support of BIGMEM added by Gerhard Wichert, Siemens AG, July 1999
- */
-
-#ifndef _ASM_X86_FIXMAP_32_H
-#define _ASM_X86_FIXMAP_32_H
-
-
-/* used by vmalloc.c, vsyscall.lds.S.
- *
- * Leave one empty page between vmalloc'ed areas and
- * the start of the fixmap.
- */
-extern unsigned long __FIXADDR_TOP;
-#define FIXADDR_USER_START __fix_to_virt(FIX_VDSO)
-#define FIXADDR_USER_END __fix_to_virt(FIX_VDSO - 1)
-
-#ifndef __ASSEMBLY__
-#include <linux/kernel.h>
-#include <asm/acpi.h>
-#include <asm/apicdef.h>
-#include <asm/page.h>
-#ifdef CONFIG_HIGHMEM
-#include <linux/threads.h>
-#include <asm/kmap_types.h>
-#endif
-
-/*
- * Here we define all the compile-time 'special' virtual
- * addresses. The point is to have a constant address at
- * compile time, but to set the physical address only
- * in the boot process. We allocate these special addresses
- * from the end of virtual memory (0xfffff000) backwards.
- * Also this lets us do fail-safe vmalloc(), we
- * can guarantee that these special addresses and
- * vmalloc()-ed addresses never overlap.
- *
- * these 'compile-time allocated' memory buffers are
- * fixed-size 4k pages. (or larger if used with an increment
- * highger than 1) use fixmap_set(idx,phys) to associate
- * physical memory with fixmap indices.
- *
- * TLB entries of such buffers will not be flushed across
- * task switches.
- */
-enum fixed_addresses {
- FIX_HOLE,
- FIX_VDSO,
- FIX_DBGP_BASE,
- FIX_EARLYCON_MEM_BASE,
-#ifdef CONFIG_X86_LOCAL_APIC
- FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
-#endif
-#ifdef CONFIG_X86_IO_APIC
- FIX_IO_APIC_BASE_0,
- FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS-1,
-#endif
-#ifdef CONFIG_X86_VISWS_APIC
- FIX_CO_CPU, /* Cobalt timer */
- FIX_CO_APIC, /* Cobalt APIC Redirection Table */
- FIX_LI_PCIA, /* Lithium PCI Bridge A */
- FIX_LI_PCIB, /* Lithium PCI Bridge B */
-#endif
-#ifdef CONFIG_X86_F00F_BUG
- FIX_F00F_IDT, /* Virtual mapping for IDT */
-#endif
-#ifdef CONFIG_X86_CYCLONE_TIMER
- FIX_CYCLONE_TIMER, /*cyclone timer register*/
-#endif
-#ifdef CONFIG_HIGHMEM
- FIX_KMAP_BEGIN, /* reserved pte's for temporary kernel mappings */
- FIX_KMAP_END = FIX_KMAP_BEGIN+(KM_TYPE_NR*NR_CPUS)-1,
-#endif
-#ifdef CONFIG_PCI_MMCONFIG
- FIX_PCIE_MCFG,
-#endif
-#ifdef CONFIG_PARAVIRT
- FIX_PARAVIRT_BOOTMAP,
-#endif
- __end_of_permanent_fixed_addresses,
- /*
- * 256 temporary boot-time mappings, used by early_ioremap(),
- * before ioremap() is functional.
- *
- * We round it up to the next 256 pages boundary so that we
- * can have a single pgd entry and a single pte table:
- */
-#define NR_FIX_BTMAPS 64
-#define FIX_BTMAPS_SLOTS 4
- FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 256 -
- (__end_of_permanent_fixed_addresses & 255),
- FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_SLOTS - 1,
- FIX_WP_TEST,
-#ifdef CONFIG_ACPI
- FIX_ACPI_BEGIN,
- FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
-#endif
-#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
- FIX_OHCI1394_BASE,
-#endif
- __end_of_fixed_addresses
-};
-
-extern void reserve_top_address(unsigned long reserve);
-
-
-#define FIXADDR_TOP ((unsigned long)__FIXADDR_TOP)
-
-#define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
-#define FIXADDR_BOOT_START (FIXADDR_TOP - FIXADDR_BOOT_SIZE)
-
-#endif /* !__ASSEMBLY__ */
-#endif /* _ASM_X86_FIXMAP_32_H */
diff --git a/arch/x86/include/asm/fixmap_64.h b/arch/x86/include/asm/fixmap_64.h
deleted file mode 100644
index 5dc7941..0000000
--- a/arch/x86/include/asm/fixmap_64.h
+++ /dev/null
@@ -1,94 +0,0 @@
-/*
- * fixmap.h: compile-time virtual memory allocation
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * Copyright (C) 1998 Ingo Molnar
- */
-
-#ifndef _ASM_X86_FIXMAP_64_H
-#define _ASM_X86_FIXMAP_64_H
-
-#include <linux/kernel.h>
-#include <asm/acpi.h>
-#include <asm/apicdef.h>
-#include <asm/page.h>
-#include <asm/vsyscall.h>
-#include <asm/efi.h>
-
-/*
- * Here we define all the compile-time 'special' virtual
- * addresses. The point is to have a constant address at
- * compile time, but to set the physical address only
- * in the boot process.
- *
- * These 'compile-time allocated' memory buffers are
- * fixed-size 4k pages (or larger if used with an increment
- * higher than 1). Use set_fixmap(idx,phys) to associate
- * physical memory with fixmap indices.
- *
- * TLB entries of such buffers will not be flushed across
- * task switches.
- */
-
-enum fixed_addresses {
- VSYSCALL_LAST_PAGE,
- VSYSCALL_FIRST_PAGE = VSYSCALL_LAST_PAGE
- + ((VSYSCALL_END-VSYSCALL_START) >> PAGE_SHIFT) - 1,
- VSYSCALL_HPET,
- FIX_DBGP_BASE,
- FIX_EARLYCON_MEM_BASE,
-#ifdef CONFIG_X86_LOCAL_APIC
- FIX_APIC_BASE, /* local (CPU) APIC) -- required for SMP or not */
-#endif
-#ifdef CONFIG_X86_IO_APIC
- FIX_IO_APIC_BASE_0,
- FIX_IO_APIC_BASE_END = FIX_IO_APIC_BASE_0 + MAX_IO_APICS - 1,
-#endif
-#ifdef CONFIG_EFI
- FIX_EFI_IO_MAP_LAST_PAGE,
- FIX_EFI_IO_MAP_FIRST_PAGE = FIX_EFI_IO_MAP_LAST_PAGE
- + MAX_EFI_IO_PAGES - 1,
-#endif
-#ifdef CONFIG_PARAVIRT
- FIX_PARAVIRT_BOOTMAP,
-#endif
- __end_of_permanent_fixed_addresses,
-#ifdef CONFIG_ACPI
- FIX_ACPI_BEGIN,
- FIX_ACPI_END = FIX_ACPI_BEGIN + FIX_ACPI_PAGES - 1,
-#endif
-#ifdef CONFIG_PROVIDE_OHCI1394_DMA_INIT
- FIX_OHCI1394_BASE,
-#endif
- /*
- * 256 temporary boot-time mappings, used by early_ioremap(),
- * before ioremap() is functional.
- *
- * We round it up to the next 256 pages boundary so that we
- * can have a single pgd entry and a single pte table:
- */
-#define NR_FIX_BTMAPS 64
-#define FIX_BTMAPS_SLOTS 4
- FIX_BTMAP_END = __end_of_permanent_fixed_addresses + 256 -
- (__end_of_permanent_fixed_addresses & 255),
- FIX_BTMAP_BEGIN = FIX_BTMAP_END + NR_FIX_BTMAPS*FIX_BTMAPS_SLOTS - 1,
- __end_of_fixed_addresses
-};
-
-extern void reserve_top_address(unsigned long reserve);
-
-#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE)
-
-#define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_BOOT_SIZE (__end_of_fixed_addresses << PAGE_SHIFT)
-#define FIXADDR_START (FIXADDR_TOP - FIXADDR_SIZE)
-#define FIXADDR_BOOT_START (FIXADDR_TOP - FIXADDR_BOOT_SIZE)
-
-/* Only covers 32bit vsyscalls currently. Need another set for 64bit. */
-#define FIXADDR_USER_START ((unsigned long)VSYSCALL32_VSYSCALL)
-#define FIXADDR_USER_END (FIXADDR_USER_START + PAGE_SIZE)
-
-#endif /* _ASM_X86_FIXMAP_64_H */
--
1.5.6.4
* Gustavo F. Padovan <[email protected]> wrote:
> Rename __FIXADDR_SIZE to FIXADDR_SIZE
> and __FIXADDR_BOOT_SIZE to FIXADDR_BOOT_SIZE.
>
> Signed-off-by: Gustavo F. Padovan <[email protected]>
> Acked-by: Glauber Costa <[email protected]>
ok, the patches look nice. Could you please rework them against
tip/master? We already have a commit in
arch/x86/include/asm/fixmap_32.h (the DRM speedup patches) which cause
rejects.
Ingo
On Mon, Nov 3, 2008 at 7:15 AM, Ingo Molnar <[email protected]> wrote:
>
> * Gustavo F. Padovan <[email protected]> wrote:
>
>> Rename __FIXADDR_SIZE to FIXADDR_SIZE
>> and __FIXADDR_BOOT_SIZE to FIXADDR_BOOT_SIZE.
>>
>> Signed-off-by: Gustavo F. Padovan <[email protected]>
>> Acked-by: Glauber Costa <[email protected]>
>
> ok, the patches look nice. Could you please rework them against
> tip/master? We already have a commit in
> arch/x86/include/asm/fixmap_32.h (the DRM speedup patches) which cause
> rejects.
That's ok.
>
> Ingo
>
--
----------------------------------------------
Gustavo Fernando Padovan
Engenharia de Computa??o 2006
LAS - Laborat?rio de Administra??o e Seguran?a de Sistemas
Instituto de Computa??o - UNICAMP
[email protected]
[email protected]
[email protected]
-------------------------------------------
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