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Sean Christopherson d6e656cd26 KVM: nVMX: WARN on any attempt to allocate shadow VMCS for vmcs02 
WARN if KVM attempts to allocate a shadow VMCS for vmcs02.  KVM emulates
VMCS shadowing but doesn't virtualize it, i.e. KVM should never allocate
a "real" shadow VMCS for L2.

The previous code WARNed but continued anyway with the allocation,
presumably in an attempt to avoid NULL pointer dereference.
However, alloc_vmcs (and hence alloc_shadow_vmcs) can fail, and
indeed the sole caller does:

	if (enable_shadow_vmcs && !alloc_shadow_vmcs(vcpu))
		goto out_shadow_vmcs;

which makes it not a useful attempt.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220125220527.2093146-1-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-01-26 12:15:04 -05:00
..
boot - Do not #GP on userspace use of CLI/STI but pretend it was a NOP to 2021-11-02 07:56:47 -07:00
configs
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2021-11-01 21:24:02 -07:00
entry x86/xen: Add xenpv_restore_regs_and_return_to_usermode() 2021-12-03 19:21:15 +01:00
events x86/perf: Fix snapshot_branch_stack warning in VM 2021-11-17 14:48:43 +01:00
hyperv x86/hyperv: Move required MSRs check to initial platform probing 2021-11-15 12:37:08 +00:00
ia32 audit/stable-5.16 PR 20211101 2021-11-01 21:17:39 -07:00
include KVM: x86: Forcibly leave nested virt when SMM state is toggled 2022-01-26 12:15:03 -05:00
kernel Merge branch 'kvm-pi-raw-spinlock' into HEAD 2022-01-19 12:14:02 -05:00
kvm KVM: nVMX: WARN on any attempt to allocate shadow VMCS for vmcs02 2022-01-26 12:15:04 -05:00
lib - Do not #GP on userspace use of CLI/STI but pretend it was a NOP to 2021-11-02 07:56:47 -07:00
math-emu x86/math-emu: Convert to fpstate 2021-10-20 23:57:54 +02:00
mm Merge branch 'kvm-guest-sev-migration' into kvm-master 2021-11-11 07:40:26 -05:00
net bpf: Fix extable address check. 2021-12-16 21:41:04 +01:00
pci xen: branch for v5.16-rc1 2021-11-10 11:14:21 -08:00
platform x86/sme: Explicitly map new EFI memmap table as encrypted 2021-12-05 16:44:52 +01:00
power x86/fpu: Replace the includes of fpu/internal.h 2021-10-20 15:27:29 +02:00
purgatory
ras
realmode x86/64/mm: Map all kernel memory into trampoline_pgd 2021-12-03 09:11:43 +01:00
tools x86/build: Use the proper name CONFIG_FW_LOADER 2021-12-29 22:20:38 +01:00
um
video
xen x86/xen: Add xenpv_restore_regs_and_return_to_usermode() 2021-12-03 19:21:15 +01:00
.gitignore
Kbuild kbuild: use more subdir- for visiting subdirectories while cleaning 2021-10-24 13:49:46 +09:00
Kconfig EFI fix for v5.16 2021-12-06 10:09:00 -08:00
Kconfig.assembler
Kconfig.cpu x86/CPU: Add support for Vortex CPUs 2021-10-21 15:49:07 +02:00
Kconfig.debug
Makefile Kbuild updates for v5.16 2021-11-08 09:15:45 -08:00
Makefile.um
Makefile_32.cpu