From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: kvm@vger.kernel.org, Sean Christopherson <seanjc@google.com>
Subject: [kvm-unit-tests PATCH 2/8] x86: nVMX: Load actual GS.base for both guest and host
Date: Fri, 21 Jan 2022 23:18:46 +0000 [thread overview]
Message-ID: <20220121231852.1439917-3-seanjc@google.com> (raw)
In-Reply-To: <20220121231852.1439917-1-seanjc@google.com>
Load KUT's actual GS.base on VM-Entry and VM-Exit so that the VMX tests
can access per-cpu data. A future commit will track xAPIC vs. x2APIC ops
on a per-cpu basis.
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
x86/vmx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/x86/vmx.c b/x86/vmx.c
index f4fbb94d..756deb38 100644
--- a/x86/vmx.c
+++ b/x86/vmx.c
@@ -1209,7 +1209,7 @@ static void init_vmcs_host(void)
vmcs_write(HOST_BASE_GDTR, gdt_descr.base);
vmcs_write(HOST_BASE_IDTR, idt_descr.base);
vmcs_write(HOST_BASE_FS, 0);
- vmcs_write(HOST_BASE_GS, 0);
+ vmcs_write(HOST_BASE_GS, rdmsr(MSR_GS_BASE));
/* Set other vmcs area */
vmcs_write(PF_ERROR_MASK, 0);
@@ -1261,7 +1261,7 @@ static void init_vmcs_guest(void)
vmcs_write(GUEST_BASE_SS, 0);
vmcs_write(GUEST_BASE_DS, 0);
vmcs_write(GUEST_BASE_FS, 0);
- vmcs_write(GUEST_BASE_GS, 0);
+ vmcs_write(GUEST_BASE_GS, rdmsr(MSR_GS_BASE));
vmcs_write(GUEST_BASE_TR, get_gdt_entry_base(tss_descr));
vmcs_write(GUEST_BASE_LDTR, 0);
--
2.35.0.rc0.227.g00780c9af4-goog
next prev parent reply other threads:[~2022-01-21 23:19 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-21 23:18 [kvm-unit-tests PATCH 0/8] x86: APIC bug fix and cleanup Sean Christopherson
2022-01-21 23:18 ` [kvm-unit-tests PATCH 1/8] x86: Always use legacy xAPIC to get APIC ID during TSS setup Sean Christopherson
2022-01-22 1:18 ` David Matlack
2022-01-21 23:18 ` Sean Christopherson [this message]
2022-01-21 23:18 ` [kvm-unit-tests PATCH 3/8] x86: smp: Replace spaces with tabs Sean Christopherson
2022-01-21 23:18 ` [kvm-unit-tests PATCH 4/8] x86: desc: " Sean Christopherson
2022-01-21 23:18 ` [kvm-unit-tests PATCH 5/8] x86: Add proper helpers for per-cpu reads/writes Sean Christopherson
2022-01-21 23:18 ` [kvm-unit-tests PATCH 6/8] x86: apic: Replace spaces with tabs Sean Christopherson
2022-01-21 23:18 ` [kvm-unit-tests PATCH 7/8] x86: apic: Track APIC ops on a per-cpu basis Sean Christopherson
2022-01-21 23:18 ` [kvm-unit-tests PATCH 8/8] x86: apic: Make xAPIC and I/O APIC pointers static Sean Christopherson
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