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x86/apic: KVM: Move lapic set/clear_vector() helpers to common code

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Move apic_clear_vector() and apic_set_vector() helper functions to
apic.h in order to reuse them in the Secure AVIC guest APIC driver
in later patches to atomically set/clear vectors in the APIC backing
page.

No functional change intended.

Signed-off-by: Neeraj Upadhyay <Neeraj.Upadhyay@amd.com>
Acked-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20250709033242.267892-13-Neeraj.Upadhyay@amd.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Neeraj Upadhyay 2025-07-09 09:02:19 +05:30 • committed by Sean Christopherson
parent 3d3a9083da
commit fe954bcd57
2 changed files with 10 additions and 10 deletions
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10
arch/x86/include/asm/apic.h
View file

@ -547,6 +547,16 @@ static __always_inline void apic_set_reg64(void *regs, int reg, u64 val)
*((u64 *) (regs + reg)) = val;
}
static inline void apic_clear_vector(int vec, void *bitmap)
{
clear_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
}
static inline void apic_set_vector(int vec, void *bitmap)
{
set_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
}
/*
* Warm reset vector position:
*/

10
arch/x86/kvm/lapic.h
View file

@ -147,16 +147,6 @@ void kvm_lapic_exit(void);
u64 kvm_lapic_readable_reg_mask(struct kvm_lapic *apic);
static inline void apic_clear_vector(int vec, void *bitmap)
{
clear_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
}
static inline void apic_set_vector(int vec, void *bitmap)
{
set_bit(APIC_VECTOR_TO_BIT_NUMBER(vec), bitmap + APIC_VECTOR_TO_REG_OFFSET(vec));
}
static inline void kvm_lapic_set_irr(int vec, struct kvm_lapic *apic)
{
apic_set_vector(vec, apic->regs + APIC_IRR);