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e287bd005a
Allow access to the percpu area via the GS segment base, which is
needed in order to access the saved host spec_ctrl value. In linux-next
FILL_RETURN_BUFFER also needs to access percpu data.
For simplicity, the physical address of the save area is added to struct
svm_cpu_data.
Cc: stable@vger.kernel.org
Fixes: a149180fbc ("x86: Add magic AMD return-thunk")
Reported-by: Nathan Chancellor <nathan@kernel.org>
Analyzed-by: Andrew Cooper <andrew.cooper3@citrix.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
28 lines
732 B
C
28 lines
732 B
C
// SPDX-License-Identifier: GPL-2.0
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/*
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* Generate definitions needed by assembly language modules.
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* This code generates raw asm output which is post-processed to extract
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* and format the required data.
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*/
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#define COMPILE_OFFSETS
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#include <linux/kbuild.h>
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#include "vmx/vmx.h"
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#include "svm/svm.h"
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static void __used common(void)
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{
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if (IS_ENABLED(CONFIG_KVM_AMD)) {
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BLANK();
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OFFSET(SVM_vcpu_arch_regs, vcpu_svm, vcpu.arch.regs);
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OFFSET(SVM_current_vmcb, vcpu_svm, current_vmcb);
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OFFSET(SVM_vmcb01, vcpu_svm, vmcb01);
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OFFSET(KVM_VMCB_pa, kvm_vmcb_info, pa);
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OFFSET(SD_save_area_pa, svm_cpu_data, save_area_pa);
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}
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if (IS_ENABLED(CONFIG_KVM_INTEL)) {
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BLANK();
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OFFSET(VMX_spec_ctrl, vcpu_vmx, spec_ctrl);
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}
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}
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