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Date: Wed, 1 Nov 2017 16:16:00 -0500 From: Brijesh Singh <brijesh.singh@....com> To: kvm@...r.kernel.org, linux-kernel@...r.kernel.org Cc: bp@...en8.de, Brijesh Singh <brijesh.singh@....com>, Paolo Bonzini <pbonzini@...hat.com>, Radim Krčmář <rkrcmar@...hat.com>, Borislav Petkov <bp@...e.de>, Herbert Xu <herbert@...dor.apana.org.au>, Gary Hook <gary.hook@....com>, Tom Lendacky <thomas.lendacky@....com>, linux-crypto@...r.kernel.org Subject: [Part2 PATCH v7 15/38] crypto: ccp: Implement SEV_PLATFORM_STATUS ioctl command The SEV_PLATFORM_STATUS command can be used by the platform owner to get the current status of the platform. The command is defined in SEV spec section 5.5. Cc: Paolo Bonzini <pbonzini@...hat.com> Cc: "Radim Krčmář" <rkrcmar@...hat.com> Cc: Borislav Petkov <bp@...e.de> Cc: Herbert Xu <herbert@...dor.apana.org.au> Cc: Gary Hook <gary.hook@....com> Cc: Tom Lendacky <thomas.lendacky@....com> Cc: linux-crypto@...r.kernel.org Cc: kvm@...r.kernel.org Cc: linux-kernel@...r.kernel.org Improvements-by: Borislav Petkov <bp@...e.de> Signed-off-by: Brijesh Singh <brijesh.singh@....com> Reviewed-by: Borislav Petkov <bp@...e.de> Acked-by: Gary R Hook <gary.hook@....com> --- drivers/crypto/ccp/psp-dev.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c index a757bd1c34e8..ef473ec4a413 100644 --- a/drivers/crypto/ccp/psp-dev.c +++ b/drivers/crypto/ccp/psp-dev.c @@ -270,6 +270,21 @@ static int sev_ioctl_do_reset(struct sev_issue_cmd *argp) return __sev_do_cmd_locked(SEV_CMD_FACTORY_RESET, 0, &argp->error); } +static int sev_ioctl_do_platform_status(struct sev_issue_cmd *argp) +{ + struct sev_user_data_status *data = psp_master->sev_status; + int ret; + + ret = __sev_do_cmd_locked(SEV_CMD_PLATFORM_STATUS, data, &argp->error); + if (ret) + return ret; + + if (copy_to_user((void __user *)argp->data, data, sizeof(*data))) + ret = -EFAULT; + + return ret; +} + static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) { void __user *argp = (void __user *)arg; @@ -295,6 +310,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) case SEV_FACTORY_RESET: ret = sev_ioctl_do_reset(&input); break; + case SEV_PLATFORM_STATUS: + ret = sev_ioctl_do_platform_status(&input); + break; default: ret = -EINVAL; goto out; -- 2.9.5
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