x86/sev-es: Set x86_virt_bits to the correct value straight away, instead of a two-phase approach

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Instead of setting x86_virt_bits to a possibly-correct value and then
correcting it later, do all the necessary checks before setting it.

At this point, the #VC handler references boot_cpu_data.x86_virt_bits,
and in the previous version, it would be triggered by the CPUIDs between
the point at which it is set to 48 and when it is set to the correct
value.

Suggested-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Adam Dunlap <acdunlap@google.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Jacob Xu <jacobhxu@google.com>
Link: https://lore.kernel.org/r/20230912002703.3924521-3-acdunlap@google.com

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Adam Dunlap 2023-09-11 17:27:03 -07:00 • committed by Ingo Molnar

parent f79936545f

commit fbf6449f84

1 changed files with 22 additions and 15 deletions

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arch/x86/kernel/cpu/common.c

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