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crypto/ccp: hoist kernel part of SNP_PLATFORM_STATUS

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...to its own function. This way it can be used when the kernel needs
access to the platform status regardless of the INIT state of the firmware.

No functional change intended.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Tycho Andersen (AMD) <tycho@kernel.org>
Acked-by: Herbert Xu <herbert@gondor.apana.org.au>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Tested-by: Tycho Andersen (AMD) <tycho@kernel.org>
Link: https://patch.msgid.link/20260416232329.3408497-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Tycho Andersen 2026-04-16 16:23:23 -07:00 committed by Sean Christopherson
parent b7fbe9a1bf
commit acf4d11a35
1 changed files with 23 additions and 8 deletions
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31
drivers/crypto/ccp/sev-dev.c
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@ -2381,7 +2381,8 @@ static int sev_ioctl_do_pdh_export(struct sev_issue_cmd *argp, bool writable)
return ret;
}
static int sev_ioctl_do_snp_platform_status(struct sev_issue_cmd *argp)
static int __sev_do_snp_platform_status(struct sev_user_data_snp_status *status,
int *error)
{
struct sev_device *sev = psp_master->sev_data;
struct sev_data_snp_addr buf;
@ -2389,9 +2390,6 @@ static int sev_ioctl_do_snp_platform_status(struct sev_issue_cmd *argp)
void *data;
int ret;
if (!argp->data)
return -EINVAL;
status_page = alloc_page(GFP_KERNEL_ACCOUNT);
if (!status_page)
return -ENOMEM;
@ -2414,7 +2412,7 @@ static int sev_ioctl_do_snp_platform_status(struct sev_issue_cmd *argp)
}
buf.address = __psp_pa(data);
ret = __sev_do_cmd_locked(SEV_CMD_SNP_PLATFORM_STATUS, &buf, &argp->error);
ret = __sev_do_cmd_locked(SEV_CMD_SNP_PLATFORM_STATUS, &buf, error);
if (sev->snp_initialized) {
/*
@ -2429,15 +2427,32 @@ static int sev_ioctl_do_snp_platform_status(struct sev_issue_cmd *argp)
if (ret)
goto cleanup;
if (copy_to_user((void __user *)argp->data, data,
sizeof(struct sev_user_data_snp_status)))
ret = -EFAULT;
memcpy(status, data, sizeof(*status));
cleanup:
__free_pages(status_page, 0);
return ret;
}
static int sev_ioctl_do_snp_platform_status(struct sev_issue_cmd *argp)
{
struct sev_user_data_snp_status status;
int ret;
if (!argp->data)
return -EINVAL;
ret = __sev_do_snp_platform_status(&status, &argp->error);
if (ret < 0)
return ret;
if (copy_to_user((void __user *)argp->data, &status,
sizeof(struct sev_user_data_snp_status)))
ret = -EFAULT;
return ret;
}
static int sev_ioctl_do_snp_commit(struct sev_issue_cmd *argp)
{
struct sev_device *sev = psp_master->sev_data;