| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.0 019/220] KVM: x86: Fix MSR_IA32_BNDCFGS in msrs_to_save | Date | Sat, 2 May 2015 20:58:54 +0200 |
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4.0-stable review patch. If anyone has any objections, please let me know.
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From: Nadav Amit <namit@cs.technion.ac.il>
commit 9e9c3fe40bcd28e3f98f0ad8408435f4503f2781 upstream.
kvm_init_msr_list is currently called before hardware_setup. As a result, vmx_mpx_supported always returns false when kvm_init_msr_list checks whether to save MSR_IA32_BNDCFGS.
Move kvm_init_msr_list after vmx_hardware_setup is called to fix this issue.
Signed-off-by: Nadav Amit <namit@cs.technion.ac.il> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Message-Id: <1428864435-4732-1-git-send-email-namit@cs.technion.ac.il> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
--- arch/x86/kvm/x86.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-)
--- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -5775,7 +5775,6 @@ int kvm_arch_init(void *opaque) kvm_set_mmio_spte_mask(); kvm_x86_ops = ops; - kvm_init_msr_list(); kvm_mmu_set_mask_ptes(PT_USER_MASK, PT_ACCESSED_MASK, PT_DIRTY_MASK, PT64_NX_MASK, 0); @@ -7209,7 +7208,14 @@ void kvm_arch_hardware_disable(void) int kvm_arch_hardware_setup(void) { - return kvm_x86_ops->hardware_setup(); + int r; + + r = kvm_x86_ops->hardware_setup(); + if (r != 0) + return r; + + kvm_init_msr_list(); + return 0; } void kvm_arch_hardware_unsetup(void)
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