On Tue, Apr 28, 2020 at 05:17:14PM +0200, Joerg Roedel wrote:
> From: Mike Stunes <[email protected]>
>
> To avoid a future VMEXIT for a subsequent CPUID function, cache the
> results returned by CPUID into an xarray.
>
> [tl: coding standard changes, register zero extension]
>
> Signed-off-by: Mike Stunes <[email protected]>
> Signed-off-by: Tom Lendacky <[email protected]>
> [ [email protected]: - Wrapped cache handling into vc_handle_cpuid_cached()
> - Used lower_32_bits() where applicable
> - Moved cache_index out of struct es_em_ctxt ]
> Co-developed-by: Joerg Roedel <[email protected]>
> Signed-off-by: Joerg Roedel <[email protected]>
> ---
> arch/x86/kernel/sev-es-shared.c | 12 ++--
> arch/x86/kernel/sev-es.c | 119 +++++++++++++++++++++++++++++++-
> 2 files changed, 124 insertions(+), 7 deletions(-)
Okay, following the discussion, I am dropping this patch for now. We can
revisit CPUID caching later when we have a better justification.
Regards,
Joerg
