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authorBrijesh Singh <brijesh.singh@amd.com>2018-02-19 10:13:25 -0600
committerPaolo Bonzini <pbonzini@redhat.com>2018-02-24 02:24:13 +0100
commit9c5e0afaf15788bcbd1c3469da701ac3da826886 (patch)
tree956dc818324c183282a3d2eddae25ca5393bb1ec
parent7607b7174405aec7441ff6c970833c463114040a (diff)
downloadlinux-9c5e0afaf15788bcbd1c3469da701ac3da826886.tar.bz2
KVM: SVM: Fix SEV LAUNCH_SECRET command
The SEV LAUNCH_SECRET command fails with error code 'invalid param' because we missed filling the guest and header system physical address while issuing the command. Fixes: 9f5b5b950aa9 (KVM: SVM: Add support for SEV LAUNCH_SECRET command) Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Radim Krčmář <rkrcmar@redhat.com> Cc: Borislav Petkov <bp@suse.de> Cc: Tom Lendacky <thomas.lendacky@amd.com> Cc: linux-kernel@vger.kernel.org Cc: Joerg Roedel <joro@8bytes.org> Signed-off-by: Brijesh Singh <brijesh.singh@amd.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/x86/kvm/svm.c10
1 files changed, 7 insertions, 3 deletions
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 4aeb665ffbb0..3d8377f75eda 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -6604,7 +6604,7 @@ static int sev_launch_secret(struct kvm *kvm, struct kvm_sev_cmd *argp)
struct page **pages;
void *blob, *hdr;
unsigned long n;
- int ret;
+ int ret, offset;
if (!sev_guest(kvm))
return -ENOTTY;
@@ -6630,6 +6630,10 @@ static int sev_launch_secret(struct kvm *kvm, struct kvm_sev_cmd *argp)
if (!data)
goto e_unpin_memory;
+ offset = params.guest_uaddr & (PAGE_SIZE - 1);
+ data->guest_address = __sme_page_pa(pages[0]) + offset;
+ data->guest_len = params.guest_len;
+
blob = psp_copy_user_blob(params.trans_uaddr, params.trans_len);
if (IS_ERR(blob)) {
ret = PTR_ERR(blob);
@@ -6644,8 +6648,8 @@ static int sev_launch_secret(struct kvm *kvm, struct kvm_sev_cmd *argp)
ret = PTR_ERR(hdr);
goto e_free_blob;
}
- data->trans_address = __psp_pa(blob);
- data->trans_len = params.trans_len;
+ data->hdr_address = __psp_pa(hdr);
+ data->hdr_len = params.hdr_len;
data->handle = sev->handle;
ret = sev_issue_cmd(kvm, SEV_CMD_LAUNCH_UPDATE_SECRET, data, &argp->error);