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linux-stable/arch/x86
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Sean Christopherson d76c7fbc01 KVM: x86: Mark CR4.UMIP as reserved based on associated CPUID bit 
Re-add code to mark CR4.UMIP as reserved if UMIP is not supported by the
host.  The UMIP handling was unintentionally dropped during a recent
refactoring.

Not flagging CR4.UMIP allows the guest to set its CR4.UMIP regardless of
host support or userspace desires.  On CPUs with UMIP support, including
emulated UMIP, this allows the guest to enable UMIP against the wishes
of the userspace VMM.  On CPUs without any form of UMIP, this results in
a failed VM-Enter due to invalid guest state.

Fixes: 345599f9a2 ("KVM: x86: Add macro to ensure reserved cr4 bits checks stay in sync")
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-02-05 16:30:19 +01:00
..
boot Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 12:46:42 -08:00
configs x86: Remove the calgary IOMMU driver 2019-11-15 10:36:59 +01:00
crypto crypto: x86/poly1305 - emit does base conversion itself 2020-01-22 16:21:11 +08:00
entry threads-v5.6 2020-01-29 19:38:34 -08:00
events Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 09:44:15 -08:00
hyperv - Support for new VMBus protocols (Andrea Parri). 2019-11-30 14:50:51 -08:00
ia32 x86: Remove force_iret() 2020-01-08 19:40:51 +01:00
include x86: vmxfeatures: rename features for consistency with KVM and manual 2020-02-05 16:22:59 +01:00
kernel x86/kvm: do not setup pv tlb flush when not paravirtualized 2020-02-05 15:28:07 +01:00
kvm KVM: x86: Mark CR4.UMIP as reserved based on associated CPUID bit 2020-02-05 16:30:19 +01:00
lib Merge branch 'x86-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 12:28:06 -08:00
math-emu Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 10:42:40 -08:00
mm ARM: Cleanups and corner case fixes 2020-01-31 09:30:41 -08:00
net bpf: Introduce BPF_MAP_TYPE_STRUCT_OPS 2020-01-09 08:46:18 -08:00
oprofile
pci Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 09:03:40 -08:00
platform drm pull for 5.6-rc1 2020-01-30 08:04:01 -08:00
power
purgatory Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 10:42:40 -08:00
ras
realmode Merge branch 'x86-asm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-11-26 10:42:40 -08:00
tools
um um: Implement copy_thread_tls 2020-01-07 13:31:29 +01:00
video
xen Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-01-28 12:11:23 -08:00
.gitignore
Kbuild
Kconfig MPX requires recompiling applications, which requires compiler support. 2020-01-30 16:11:50 -08:00
Kconfig.cpu x86/cpu: Detect VMX features on Intel, Centaur and Zhaoxin CPUs 2020-01-13 18:02:53 +01:00
Kconfig.debug x86/traps: Disentangle the 32-bit and 64-bit doublefault code 2019-11-26 21:53:34 +01:00
Makefile
Makefile.um
Makefile_32.cpu