[edk2-devel] [V1 PATCH 1/1] OvmfPkg: Add INVD case in #VE handler
Yao, Jiewen
jiewen.yao at intel.com
Fri Dec 9 06:49:32 UTC 2022
Reviewed-by: Jiewen Yao <Jiewen.yao at intel.com>
> -----Original Message-----
> From: Ryan Afranji <afranji at google.com>
> Sent: Thursday, December 8, 2022 8:51 AM
> To: devel at edk2.groups.io
> Cc: Nakajima, Jun <jun.nakajima at intel.com>; Xu, Min M
> <min.m.xu at intel.com>; Yao, Jiewen <jiewen.yao at intel.com>; Aktas, Erdem
> <erdemaktas at google.com>; vannapurve at google.com; Ryan Afranji
> <afranji at google.com>
> Subject: [V1 PATCH 1/1] OvmfPkg: Add INVD case in #VE handler
>
> According to the Intel GHCI specification document section 2.4.1, the
> goal for instructions that do not have a corresponding TDCALL is for the
> handler to treat the instruction as a NOP.
>
> INVD does not have a corresponding TDCALL. This patch makes the #VE
> handler treat INVD as a NOP.
>
> Signed-off-by: Ryan Afranji <afranji at google.com>
> ---
> OvmfPkg/Library/CcExitLib/CcExitVeHandler.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/OvmfPkg/Library/CcExitLib/CcExitVeHandler.c
> b/OvmfPkg/Library/CcExitLib/CcExitVeHandler.c
> index c35f65a649..3798c2bb13 100644
> --- a/OvmfPkg/Library/CcExitLib/CcExitVeHandler.c
> +++ b/OvmfPkg/Library/CcExitLib/CcExitVeHandler.c
> @@ -541,6 +541,7 @@ CcExitHandleVe (
> case EXIT_REASON_MONITOR_INSTRUCTION:
> case EXIT_REASON_WBINVD:
> case EXIT_REASON_RDPMC:
> + case EXIT_REASON_INVD:
> /* Handle as nops. */
> break;
>
> --
> 2.39.0.rc1.256.g54fd8350bd-goog
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