Messages in this thread Patch in this message | | | From | Harald Hoyer <> | Subject | [[PATCH for v6]] KVM: SEV: fix snp_launch_finish | Date | Thu, 8 Sep 2022 16:55:57 +0200 |
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The `params.auth_key_en` indicator does _not_ specify, whether an ID_AUTH struct should be sent or not, but, wheter the ID_AUTH struct contains an author key or not. The firmware always expects an ID_AUTH block.
Link: https://lore.kernel.org/all/cover.1655761627.git.ashish.kalra@amd.com/ Signed-off-by: Harald Hoyer <harald@profian.com> --- arch/x86/kvm/svm/sev.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/x86/kvm/svm/sev.c b/arch/x86/kvm/svm/sev.c index 85357dc4d231..5cf4be6a33ba 100644 --- a/arch/x86/kvm/svm/sev.c +++ b/arch/x86/kvm/svm/sev.c @@ -2242,17 +2242,18 @@ static int snp_launch_finish(struct kvm *kvm, struct kvm_sev_cmd *argp) data->id_block_en = 1; data->id_block_paddr = __sme_pa(id_block); - } - if (params.auth_key_en) { id_auth = psp_copy_user_blob(params.id_auth_uaddr, KVM_SEV_SNP_ID_AUTH_SIZE); if (IS_ERR(id_auth)) { ret = PTR_ERR(id_auth); goto e_free_id_block; } - data->auth_key_en = 1; data->id_auth_paddr = __sme_pa(id_auth); + + if (params.auth_key_en) { + data->auth_key_en = 1; + } } data->gctx_paddr = __psp_pa(sev->snp_context); -- 2.37.1
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