diff options
| author | Joerg Roedel <jroedel@suse.de> | 2021-06-18 14:54:09 +0300 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2021-06-21 17:01:05 +0300 |
| commit | be1a5408868af341f61f93c191b5e346ee88c82a (patch) | |
| tree | d7208c460a3c25a2784b44f32bf6586d86855f9f /arch/x86/entry | |
| parent | d187f217335dba2b49fc9002aab2004e04acddee (diff) | |
| download | linux-be1a5408868af341f61f93c191b5e346ee88c82a.tar.xz | |
x86/sev: Split up runtime #VC handler for correct state tracking
Split up the #VC handler code into a from-user and a from-kernel part.
This allows clean and correct state tracking, as the #VC handler needs
to enter NMI-state when raised from kernel mode and plain IRQ state when
raised from user-mode.
Fixes: 62441a1fb532 ("x86/sev-es: Correctly track IRQ states in runtime #VC handler")
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210618115409.22735-3-joro@8bytes.org
Diffstat (limited to 'arch/x86/entry')
| -rw-r--r-- | arch/x86/entry/entry_64.S | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/entry/entry_64.S b/arch/x86/entry/entry_64.S index a16a5294d55f..1886aaf19914 100644 --- a/arch/x86/entry/entry_64.S +++ b/arch/x86/entry/entry_64.S @@ -506,7 +506,7 @@ SYM_CODE_START(\asmsym) movq %rsp, %rdi /* pt_regs pointer */ - call \cfunc + call kernel_\cfunc /* * No need to switch back to the IST stack. The current stack is either @@ -517,7 +517,7 @@ SYM_CODE_START(\asmsym) /* Switch to the regular task stack */ .Lfrom_usermode_switch_stack_\@: - idtentry_body safe_stack_\cfunc, has_error_code=1 + idtentry_body user_\cfunc, has_error_code=1 _ASM_NOKPROBE(\asmsym) SYM_CODE_END(\asmsym) |