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From 0c47ce82da47eebc2e05744bcbebcc4976ea6ada Mon Sep 17 00:00:00 2001
From: Brijesh Singh <brijesh.singh@amd.com>
Date: Mon, 19 Feb 2018 10:13:25 -0600
Subject: [PATCH 90/95] KVM: SVM: Fix SEV LAUNCH_SECRET command
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
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>
Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
---
arch/x86/kvm/svm.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 6352a6c..e7815a3 100755
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -6573,7 +6573,7 @@ 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;
@@ -6599,6 +6599,10 @@ 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);
@@ -6613,8 +6617,8 @@ 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);
--
2.7.4
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