Re: [PATCHv5 07/30] x86/traps: Add #VE support for TDX guest

[Dave Hansen]

On 3/2/22 06:27, Kirill A. Shutemov wrote:
> Virtualization Exceptions (#VE) are delivered to TDX guests due to
> specific guest actions which may happen in either user space or the
> kernel:
> 
>  * Specific instructions (WBINVD, for example)
>  * Specific MSR accesses
>  * Specific CPUID leaf accesses
>  * Access to specific guest physical addresses
...
>  arch/x86/coco/tdx.c             | 31 +++++++++++++
>  arch/x86/include/asm/idtentry.h |  4 ++
>  arch/x86/include/asm/tdx.h      | 21 +++++++++
>  arch/x86/kernel/idt.c           |  3 ++
>  arch/x86/kernel/traps.c         | 81 +++++++++++++++++++++++++++++++++

I know it took a long time to get here, but it's really, really nice
that this ended up being all done in C without any nastiness in the
kernel to deal with things like NMIs.

Reviewed-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>