Hi Linus,
please pull one important s390 fix for 5.10-rc6.
Thanks,
Heiko
The following changes since commit 78d732e1f326f74f240d416af9484928303d9951:
s390/cpum_sf.c: fix file permission for cpum_sfb_size (2020-11-12 12:10:36 +0100)
are available in the Git repository at:
git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-5.10-5
for you to fetch changes up to 1179f170b6f0af7bb0b3b7628136eaac450ddf31:
s390: fix fpu restore in entry.S (2020-11-23 11:52:13 +0100)
----------------------------------------------------------------
- disable interrupts when restoring fpu and vector registers,
otherwise KVM guests might see corrupted register contents
----------------------------------------------------------------
Sven Schnelle (1):
s390: fix fpu restore in entry.S
arch/s390/kernel/asm-offsets.c | 10 +++++-----
arch/s390/kernel/entry.S | 2 ++
2 files changed, 7 insertions(+), 5 deletions(-)
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c
index 2012c1cf0853..483051e10db3 100644
--- a/arch/s390/kernel/asm-offsets.c
+++ b/arch/s390/kernel/asm-offsets.c
@@ -53,11 +53,11 @@ int main(void)
/* stack_frame offsets */
OFFSET(__SF_BACKCHAIN, stack_frame, back_chain);
OFFSET(__SF_GPRS, stack_frame, gprs);
- OFFSET(__SF_EMPTY, stack_frame, empty1);
- OFFSET(__SF_SIE_CONTROL, stack_frame, empty1[0]);
- OFFSET(__SF_SIE_SAVEAREA, stack_frame, empty1[1]);
- OFFSET(__SF_SIE_REASON, stack_frame, empty1[2]);
- OFFSET(__SF_SIE_FLAGS, stack_frame, empty1[3]);
+ OFFSET(__SF_EMPTY, stack_frame, empty1[0]);
+ OFFSET(__SF_SIE_CONTROL, stack_frame, empty1[1]);
+ OFFSET(__SF_SIE_SAVEAREA, stack_frame, empty1[2]);
+ OFFSET(__SF_SIE_REASON, stack_frame, empty1[3]);
+ OFFSET(__SF_SIE_FLAGS, stack_frame, empty1[4]);
BLANK();
OFFSET(__VDSO_GETCPU_VAL, vdso_per_cpu_data, getcpu_val);
BLANK();
diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S
index 5346545b9860..26bb0603c5a1 100644
--- a/arch/s390/kernel/entry.S
+++ b/arch/s390/kernel/entry.S
@@ -1068,6 +1068,7 @@ EXPORT_SYMBOL(save_fpu_regs)
* %r4
*/
load_fpu_regs:
+ stnsm __SF_EMPTY(%r15),0xfc
lg %r4,__LC_CURRENT
aghi %r4,__TASK_thread
TSTMSK __LC_CPU_FLAGS,_CIF_FPU
@@ -1099,6 +1100,7 @@ load_fpu_regs:
.Lload_fpu_regs_done:
ni __LC_CPU_FLAGS+7,255-_CIF_FPU
.Lload_fpu_regs_exit:
+ ssm __SF_EMPTY(%r15)
BR_EX %r14
.Lload_fpu_regs_end:
ENDPROC(load_fpu_regs)
The pull request you sent on Tue, 24 Nov 2020 19:04:55 +0100:
> git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-5.10-5
has been merged into torvalds/linux.git:
https://git.kernel.org/torvalds/c/80145ac2f739558e66bd8789df3414bc0e111c58
Thank you!
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