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    Subject[PATCH v7 53/72] x86/sev-es: Handle WBINVD Events
    Date
    From: Tom Lendacky <thomas.lendacky@amd.com>

    Implement a handler for #VC exceptions caused by WBINVD instructions.

    Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
    [ jroedel@suse.de: Adapt to #VC handling framework ]
    Co-developed-by: Joerg Roedel <jroedel@suse.de>
    Signed-off-by: Joerg Roedel <jroedel@suse.de>
    ---
    arch/x86/kernel/sev-es.c | 9 +++++++++
    1 file changed, 9 insertions(+)

    diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c
    index 7879fe640dcc..c51cb2673af6 100644
    --- a/arch/x86/kernel/sev-es.c
    +++ b/arch/x86/kernel/sev-es.c
    @@ -847,6 +847,12 @@ static enum es_result vc_handle_dr7_read(struct ghcb *ghcb,
    return ES_OK;
    }

    +static enum es_result vc_handle_wbinvd(struct ghcb *ghcb,
    + struct es_em_ctxt *ctxt)
    +{
    + return sev_es_ghcb_hv_call(ghcb, ctxt, SVM_EXIT_WBINVD, 0, 0);
    +}
    +
    static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt,
    struct ghcb *ghcb,
    unsigned long exit_code)
    @@ -869,6 +875,9 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt,
    case SVM_EXIT_MSR:
    result = vc_handle_msr(ghcb, ctxt);
    break;
    + case SVM_EXIT_WBINVD:
    + result = vc_handle_wbinvd(ghcb, ctxt);
    + break;
    case SVM_EXIT_NPF:
    result = vc_handle_mmio(ghcb, ctxt);
    break;
    --
    2.28.0
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