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KVM: selftests: Add and use a helper function for x86's LIDT

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Implement a function for setting the IDT descriptor from the guest
code. Replace the existing lidt occurrences with calls to this function
as `lidt` is used in multiple places.

Signed-off-by: Ivan Orlov <iorlov@amazon.com>
Link: https://lore.kernel.org/r/20241217181458.68690-7-iorlov@amazon.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Ivan Orlov
2024-12-17 18:14:57 +00:00
committed by Sean Christopherson
parent 7bd7ff9911
commit 4e9427aeb9
3 changed files with 7 additions and 2 deletions
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5
tools/testing/selftests/kvm/include/x86/processor.h
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@@ -569,6 +569,11 @@ static inline void set_cr4(uint64_t val)
__asm__ __volatile__("mov %0, %%cr4" : : "r" (val) : "memory");
}
static inline void set_idt(const struct desc_ptr *idt_desc)
{
__asm__ __volatile__("lidt %0"::"m"(*idt_desc));
}
static inline u64 xgetbv(u32 index)
{
u32 eax, edx;