Messages in this thread Patch in this message | | | From | Borislav Petkov <> | Subject | [PATCH -v2 02/11] virt/coco/sev-guest: Check SEV_SNP attribute at probe time | Date | Tue, 21 Feb 2023 12:34:19 +0100 |
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From: "Borislav Petkov (AMD)" <bp@alien8.de>
No need to check it on every ioctl. And yes, this is a common SEV driver but it does only SNP-specific operations currently. This can be revisited later, when more use cases appear.
No functional changes.
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> --- arch/x86/kernel/sev.c | 3 --- drivers/virt/coco/sev-guest/sev-guest.c | 3 +++ 2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kernel/sev.c b/arch/x86/kernel/sev.c index 679026a640ef..c644c34372e8 100644 --- a/arch/x86/kernel/sev.c +++ b/arch/x86/kernel/sev.c @@ -2183,9 +2183,6 @@ int snp_issue_guest_request(u64 exit_code, struct snp_req_data *input, unsigned struct ghcb *ghcb; int ret; - if (!cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) - return -ENODEV; - if (!fw_err) return -EINVAL; diff --git a/drivers/virt/coco/sev-guest/sev-guest.c b/drivers/virt/coco/sev-guest/sev-guest.c index 4ec4174e05a3..edaf6031c6d9 100644 --- a/drivers/virt/coco/sev-guest/sev-guest.c +++ b/drivers/virt/coco/sev-guest/sev-guest.c @@ -689,6 +689,9 @@ static int __init sev_guest_probe(struct platform_device *pdev) void __iomem *mapping; int ret; + if (!cc_platform_has(CC_ATTR_GUEST_SEV_SNP)) + return -ENODEV; + if (!dev->platform_data) return -ENODEV; -- 2.35.1
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