diff options
| -rw-r--r-- | arch/x86/include/asm/sev.h | 2 | ||||
| -rw-r--r-- | drivers/virt/coco/sev-guest/sev-guest.c | 2 |
2 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/include/asm/sev.h b/arch/x86/include/asm/sev.h index 79bbe2be900e..ee34ab00a8d6 100644 --- a/arch/x86/include/asm/sev.h +++ b/arch/x86/include/asm/sev.h @@ -164,7 +164,7 @@ struct snp_guest_msg_hdr { struct snp_guest_msg { struct snp_guest_msg_hdr hdr; - u8 payload[4000]; + u8 payload[PAGE_SIZE - sizeof(struct snp_guest_msg_hdr)]; } __packed; struct sev_guest_platform_data { diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c index 3b76cbf78f41..89754b019be2 100644 --- a/drivers/virt/coco/sev-guest/sev-guest.c +++ b/drivers/virt/coco/sev-guest/sev-guest.c @@ -1092,6 +1092,8 @@ static int __init sev_guest_probe(struct platform_device *pdev) void __iomem *mapping; int ret; + BUILD_BUG_ON(sizeof(struct snp_guest_msg) > PAGE_SIZE); + if (!cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) return -ENODEV; |