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KVM: x86: warn on incorrectly NULL members of kvm_x86_ops 

Use the newly corrected KVM_X86_OP annotations to warn about possible
NULL pointer dereferences as soon as the vendor module is loaded.

Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2021-12-09 08:12:48 -05:00
parent e4fc23bad8
commit dd2319c618
1 changed files with 5 additions and 2 deletions
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7
arch/x86/include/asm/kvm_host.h
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@ -1545,10 +1545,13 @@ extern struct kvm_x86_ops kvm_x86_ops;
static inline void kvm_ops_static_call_update(void)
{
#define KVM_X86_OP(func) \
#define __KVM_X86_OP(func) \
static_call_update(kvm_x86_##func, kvm_x86_ops.func);
#define KVM_X86_OP_OPTIONAL KVM_X86_OP
#define KVM_X86_OP(func) \
WARN_ON(!kvm_x86_ops.func); __KVM_X86_OP(func)
#define KVM_X86_OP_OPTIONAL __KVM_X86_OP
#include <asm/kvm-x86-ops.h>
#undef __KVM_X86_OP
}
#define __KVM_HAVE_ARCH_VM_ALLOC