x86/sev: Fix stack type check in vc_switch_off_ist()

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The value of STACK_TYPE_EXCEPTION_LAST points to the last _valid_
exception stack. Reflect that in the check done in the
vc_switch_off_ist() function.

Fixes: a13644f3a5 ("x86/entry/64: Add entry code for #VC handler")
Reported-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211021080833.30875-2-joro@8bytes.org

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Joerg Roedel 2021-10-21 10:08:32 +02:00 • committed by Borislav Petkov

parent e7d445ab26

commit 5681981fb7

1 changed files with 1 additions and 1 deletions

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arch/x86/kernel/traps.c

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