| Message ID | 20171020023413.122280-16-brijesh.singh@amd.com (mailing list archive) |
|---|---|
| State | Not Applicable |
| Delegated to: | Herbert Xu |
| Headers | show |
On Thu, Oct 19, 2017 at 09:33:50PM -0500, Brijesh Singh wrote: > 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@redhat.com> > Cc: "Radim Krčmář" <rkrcmar@redhat.com> > Cc: Borislav Petkov <bp@suse.de> > Cc: Herbert Xu <herbert@gondor.apana.org.au> > Cc: Gary Hook <gary.hook@amd.com> > Cc: Tom Lendacky <thomas.lendacky@amd.com> > Cc: linux-crypto@vger.kernel.org > Cc: kvm@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Improvements-by: Borislav Petkov <bp@suse.de> > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> > --- > drivers/crypto/ccp/psp-dev.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) Reviewed-by: Borislav Petkov <bp@suse.de>
On 10/19/2017 09:33 PM, Brijesh Singh wrote: > 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@redhat.com> > Cc: "Radim Krčmář" <rkrcmar@redhat.com> > Cc: Borislav Petkov <bp@suse.de> > Cc: Herbert Xu <herbert@gondor.apana.org.au> > Cc: Gary Hook <gary.hook@amd.com> > Cc: Tom Lendacky <thomas.lendacky@amd.com> > Cc: linux-crypto@vger.kernel.org > Cc: kvm@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Improvements-by: Borislav Petkov <bp@suse.de> > Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Acked-by: Gary R Hook <gary.hook@amd.com> > --- > drivers/crypto/ccp/psp-dev.c | 24 ++++++++++++++++++++++++ > 1 file changed, 24 insertions(+) > > diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c > index 99f3761206da..5c921b36bc23 100644 > --- a/drivers/crypto/ccp/psp-dev.c > +++ b/drivers/crypto/ccp/psp-dev.c > @@ -174,6 +174,27 @@ static int sev_do_cmd(int cmd, void *data, int *psp_ret) > return ret; > } > > +static int sev_ioctl_do_platform_status(struct sev_issue_cmd *argp) > +{ > + struct sev_user_data_status *data; > + int ret; > + > + data = kzalloc(sizeof(*data), GFP_KERNEL); > + if (!data) > + return -ENOMEM; > + > + ret = sev_do_cmd(SEV_CMD_PLATFORM_STATUS, data, &argp->error); > + if (ret) > + goto e_free; > + > + if (copy_to_user((void __user *)argp->data, data, sizeof(*data))) > + ret = -EFAULT; > + > +e_free: > + kfree(data); > + return ret; > +} > + > static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) > { > void __user *argp = (void __user *)arg; > @@ -194,6 +215,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) > case SEV_FACTORY_RESET: > ret = sev_do_cmd(SEV_CMD_FACTORY_RESET, 0, &input.error); > break; > + case SEV_PLATFORM_STATUS: > + ret = sev_ioctl_do_platform_status(&input); > + break; > default: > ret = -EINVAL; > goto out; >
diff --git a/drivers/crypto/ccp/psp-dev.c b/drivers/crypto/ccp/psp-dev.c index 99f3761206da..5c921b36bc23 100644 --- a/drivers/crypto/ccp/psp-dev.c +++ b/drivers/crypto/ccp/psp-dev.c @@ -174,6 +174,27 @@ static int sev_do_cmd(int cmd, void *data, int *psp_ret) return ret; } +static int sev_ioctl_do_platform_status(struct sev_issue_cmd *argp) +{ + struct sev_user_data_status *data; + int ret; + + data = kzalloc(sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + ret = sev_do_cmd(SEV_CMD_PLATFORM_STATUS, data, &argp->error); + if (ret) + goto e_free; + + if (copy_to_user((void __user *)argp->data, data, sizeof(*data))) + ret = -EFAULT; + +e_free: + kfree(data); + return ret; +} + static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) { void __user *argp = (void __user *)arg; @@ -194,6 +215,9 @@ static long sev_ioctl(struct file *file, unsigned int ioctl, unsigned long arg) case SEV_FACTORY_RESET: ret = sev_do_cmd(SEV_CMD_FACTORY_RESET, 0, &input.error); break; + case SEV_PLATFORM_STATUS: + ret = sev_ioctl_do_platform_status(&input); + break; default: ret = -EINVAL; goto out;
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@redhat.com> Cc: "Radim Krčmář" <rkrcmar@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Herbert Xu <herbert@gondor.apana.org.au> Cc: Gary Hook <gary.hook@amd.com> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: linux-crypto@vger.kernel.org Cc: kvm@vger.kernel.org Cc: linux-kernel@vger.kernel.org Improvements-by: Borislav Petkov <bp@suse.de> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> --- drivers/crypto/ccp/psp-dev.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+)