diff options
| author | Nikunj A Dadhania <nikunj@amd.com> | 2025-04-08 15:02:11 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-07-17 18:37:08 +0200 |
| commit | 5cb498b20bff838265edff75ec6c364229f05dcb (patch) | |
| tree | 3108018adf56d99d60338b57aad945d0c13d3ab9 | |
| parent | 55f568521e0b27813a6394a02aee3e9c3ef181e7 (diff) | |
KVM: SVM: Add missing member in SNP_LAUNCH_START command structure
commit 51a4273dcab39dd1e850870945ccec664352d383 upstream.
The sev_data_snp_launch_start structure should include a 4-byte
desired_tsc_khz field before the gosvw field, which was missed in the
initial implementation. As a result, the structure is 4 bytes shorter than
expected by the firmware, causing the gosvw field to start 4 bytes early.
Fix this by adding the missing 4-byte member for the desired TSC frequency.
Fixes: 3a45dc2b419e ("crypto: ccp: Define the SEV-SNP commands")
Cc: stable@vger.kernel.org
Suggested-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Tested-by: Vaishali Thakkar <vaishali.thakkar@suse.com>
Signed-off-by: Nikunj A Dadhania <nikunj@amd.com>
Link: https://lore.kernel.org/r/20250408093213.57962-3-nikunj@amd.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/psp-sev.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/psp-sev.h b/include/linux/psp-sev.h index 903ddfea8585..613a8209bed2 100644 --- a/include/linux/psp-sev.h +++ b/include/linux/psp-sev.h @@ -594,6 +594,7 @@ struct sev_data_snp_addr { * @imi_en: launch flow is launching an IMI (Incoming Migration Image) for the * purpose of guest-assisted migration. * @rsvd: reserved + * @desired_tsc_khz: hypervisor desired mean TSC freq in kHz of the guest * @gosvw: guest OS-visible workarounds, as defined by hypervisor */ struct sev_data_snp_launch_start { @@ -603,6 +604,7 @@ struct sev_data_snp_launch_start { u32 ma_en:1; /* In */ u32 imi_en:1; /* In */ u32 rsvd:30; + u32 desired_tsc_khz; /* In */ u8 gosvw[16]; /* In */ } __packed; |