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From 1e8e3c4fe380a2a0ed88f7a92f5bcb8600ab1258 Mon Sep 17 00:00:00 2001
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From: Paolo Bonzini <pbonzini@redhat.com>
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Date: Mon, 22 Jul 2019 18:22:03 +0100
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Subject: [PATCH 22/39] i386: Save EFER for 32-bit targets
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RH-Author: Paolo Bonzini <pbonzini@redhat.com>
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Message-id: <20190722182220.19374-2-pbonzini@redhat.com>
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Patchwork-id: 89619
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O-Subject: [RHEL-8.1.0 PATCH qemu-kvm v3 01/18] i386: Save EFER for 32-bit targets
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Bugzilla: 1689269
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RH-Acked-by: Peter Xu <zhexu@redhat.com>
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RH-Acked-by: Laurent Vivier <lvivier@redhat.com>
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RH-Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
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From: Pavel Dovgalyuk <pavel.dovgaluk@gmail.com>
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i386 (32 bit) emulation uses EFER in wrmsr and in MMU fault
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processing.
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But it does not included in VMState, because "efer" field is disabled with
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This patch adds a section for 32-bit targets which saves EFER when
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it's value is non-zero.
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Signed-off-by: Pavel Dovgalyuk <pavel.dovgaluk@ispras.ru>
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Message-Id: <155913371654.8429.1659082639780315242.stgit@pasha-Precision-3630-Tower>
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Reviewed-by: Peter Xu <peterx@redhat.com>
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[ehabkost: indentation fix]
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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(cherry picked from commit 89a44a103315267122119b4311218d00d2561ebe)
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Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
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---
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target/i386/machine.c | 24 ++++++++++++++++++++++++
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1 file changed, 24 insertions(+)
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diff --git a/target/i386/machine.c b/target/i386/machine.c
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index 2a85c91..561d4a5 100644
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--- a/target/i386/machine.c
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+++ b/target/i386/machine.c
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@@ -932,6 +932,27 @@ static const VMStateDescription vmstate_msr_virt_ssbd = {
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}
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};
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+#ifndef TARGET_X86_64
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+static bool intel_efer32_needed(void *opaque)
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+{
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+ X86CPU *cpu = opaque;
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+ CPUX86State *env = &cpu->env;
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+
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+ return env->efer != 0;
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+}
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+
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+static const VMStateDescription vmstate_efer32 = {
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+ .name = "cpu/efer32",
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+ .version_id = 1,
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+ .minimum_version_id = 1,
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+ .needed = intel_efer32_needed,
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+ .fields = (VMStateField[]) {
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+ VMSTATE_UINT64(env.efer, X86CPU),
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+ VMSTATE_END_OF_LIST()
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+ }
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+};
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+#endif
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+
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VMStateDescription vmstate_x86_cpu = {
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.name = "cpu",
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.version_id = 12,
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@@ -1056,6 +1077,9 @@ VMStateDescription vmstate_x86_cpu = {
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&vmstate_msr_intel_pt,
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&vmstate_xsave,
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&vmstate_msr_virt_ssbd,
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+#ifndef TARGET_X86_64
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+ &vmstate_efer32,
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+#endif
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NULL
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}
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};
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--
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1.8.3.1
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