From: Joerg Roedel Date: Mon, 7 Sep 2020 13:15:48 +0000 (+0200) Subject: x86/sev-es: Wire up existing #VC exit-code handlers X-Git-Tag: v5.10.7~1448^2~26 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d3529bb73f76d0ec8aafaca505226fa0971c1dc9;p=platform%2Fkernel%2Flinux-rpi.git x86/sev-es: Wire up existing #VC exit-code handlers Re-use the handlers for CPUID- and IOIO-caused #VC exceptions in the early boot handler. Signed-off-by: Joerg Roedel Signed-off-by: Borislav Petkov Link: https://lkml.kernel.org/r/20200907131613.12703-48-joro@8bytes.org --- diff --git a/arch/x86/kernel/sev-es-shared.c b/arch/x86/kernel/sev-es-shared.c index 53e3de0..491b557 100644 --- a/arch/x86/kernel/sev-es-shared.c +++ b/arch/x86/kernel/sev-es-shared.c @@ -325,8 +325,7 @@ static enum es_result vc_ioio_exitinfo(struct es_em_ctxt *ctxt, u64 *exitinfo) return ES_OK; } -static enum es_result __maybe_unused -vc_handle_ioio(struct ghcb *ghcb, struct es_em_ctxt *ctxt) +static enum es_result vc_handle_ioio(struct ghcb *ghcb, struct es_em_ctxt *ctxt) { struct pt_regs *regs = ctxt->regs; u64 exit_info_1, exit_info_2; @@ -434,8 +433,8 @@ vc_handle_ioio(struct ghcb *ghcb, struct es_em_ctxt *ctxt) return ret; } -static enum es_result __maybe_unused vc_handle_cpuid(struct ghcb *ghcb, - struct es_em_ctxt *ctxt) +static enum es_result vc_handle_cpuid(struct ghcb *ghcb, + struct es_em_ctxt *ctxt) { struct pt_regs *regs = ctxt->regs; u32 cr4 = native_read_cr4(); diff --git a/arch/x86/kernel/sev-es.c b/arch/x86/kernel/sev-es.c index 0d6b66e..b10a62a 100644 --- a/arch/x86/kernel/sev-es.c +++ b/arch/x86/kernel/sev-es.c @@ -441,6 +441,12 @@ static enum es_result vc_handle_exitcode(struct es_em_ctxt *ctxt, enum es_result result; switch (exit_code) { + case SVM_EXIT_CPUID: + result = vc_handle_cpuid(ghcb, ctxt); + break; + case SVM_EXIT_IOIO: + result = vc_handle_ioio(ghcb, ctxt); + break; default: /* * Unexpected #VC exception