* Tom Lendacky (thomas.lendacky@xxxxxxx) wrote:
> From: Tom Lendacky <thomas.lendacky@xxxxxxx>
>
> Update the sev_es_enabled() function return value to be based on the SEV
> policy that has been specified. SEV-ES is enabled if SEV is enabled and
> the SEV-ES policy bit is set in the policy object.
>
> Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
> ---
> target/i386/sev.c | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/target/i386/sev.c b/target/i386/sev.c
> index 6ddefc65fa..bcaadaa2f9 100644
> --- a/target/i386/sev.c
> +++ b/target/i386/sev.c
> @@ -70,6 +70,8 @@ struct SevGuestState {
> #define DEFAULT_GUEST_POLICY 0x1 /* disable debug */
> #define DEFAULT_SEV_DEVICE "/dev/sev"
>
> +#define GUEST_POLICY_SEV_ES_BIT (1 << 2)
> +
I'm surprised that all the policy bits aren't defined in a header somewhere.
But other than that,
Reviewed-by: Dr. David Alan Gilbert <dgilbert@xxxxxxxxxx>
> /* SEV Information Block GUID = 00f771de-1a7e-4fcb-890e-68c77e2fb44e */
> #define SEV_INFO_BLOCK_GUID \
> "\xde\x71\xf7\x00\x7e\x1a\xcb\x4f\x89\x0e\x68\xc7\x7e\x2f\xb4\x4e"
> @@ -375,7 +377,7 @@ sev_enabled(void)
> bool
> sev_es_enabled(void)
> {
> - return false;
> + return sev_enabled() && (sev_guest->policy & GUEST_POLICY_SEV_ES_BIT);
> }
>
> uint64_t
> --
> 2.28.0
>
--
Dr. David Alan Gilbert / dgilbert@xxxxxxxxxx / Manchester, UK
