On 29/05/2024 10:01 am, Roger Pau Monne wrote:
> diff --git a/xen/arch/x86/apic.c b/xen/arch/x86/apic.c
> index 6567af685a1b..4d77fba3ed19 100644
> --- a/xen/arch/x86/apic.c
> +++ b/xen/arch/x86/apic.c
> @@ -1543,3 +1543,8 @@ void check_for_unexpected_msi(unsigned int vector)
> {
> BUG_ON(apic_isr_read(vector));
> }
> +
> +bool lapic_check_pending(unsigned int vector)
> +{
> + return apic_read(APIC_IRR + (vector / 32 * 0x10)) & (1U << (vector %
> 32));
> +}
> diff --git a/xen/arch/x86/include/asm/apic.h b/xen/arch/x86/include/asm/apic.h
> index d1cb001fb4ab..7b5a0832c05e 100644
> --- a/xen/arch/x86/include/asm/apic.h
> +++ b/xen/arch/x86/include/asm/apic.h
> @@ -179,6 +179,9 @@ extern void record_boot_APIC_mode(void);
> extern enum apic_mode current_local_apic_mode(void);
> extern void check_for_unexpected_msi(unsigned int vector);
>
> +/* Return whether vector is pending in IRR. */
> +bool lapic_check_pending(unsigned int vector);
> +
As a minor point, we've already got apic_isr_read() as a static inline.
This wants to be a matching apic_irr_read() IMO.
~Andrew
