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powerpc/xive: Rename XIVE_IRQ_NO_EOI to show its a flag 

This is a simple cleanup to identify easily all flags of the XIVE
interrupt structure. The interrupts flagged with XIVE_IRQ_FLAG_NO_EOI
are the escalations used to wake up vCPUs in KVM. They are handled
very differently from the rest.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20201210171450.1933725-3-clg@kaod.org
This commit is contained in:
Cédric Le Goater 2020-12-10 18:14:39 +01:00 committed by Michael Ellerman
parent 9898367500
commit 4f1c3f7b08
3 changed files with 4 additions and 4 deletions
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2
arch/powerpc/include/asm/xive.h
View File

@ -66,7 +66,7 @@ struct xive_irq_data {
#define XIVE_IRQ_FLAG_H_INT_ESB 0x20
/* Special flag set by KVM for excalation interrupts */
#define XIVE_IRQ_NO_EOI 0x80
#define XIVE_IRQ_FLAG_NO_EOI 0x80
#define XIVE_INVALID_CHIP_ID -1

4
arch/powerpc/kvm/book3s_xive.c
View File

@ -219,7 +219,7 @@ int kvmppc_xive_attach_escalation(struct kvm_vcpu *vcpu, u8 prio,
/* In single escalation mode, we grab the ESB MMIO of the
* interrupt and mask it. Also populate the VCPU v/raddr
* of the ESB page for use by asm entry/exit code. Finally
* set the XIVE_IRQ_NO_EOI flag which will prevent the
* set the XIVE_IRQ_FLAG_NO_EOI flag which will prevent the
* core code from performing an EOI on the escalation
* interrupt, thus leaving it effectively masked after
* it fires once.
@ -231,7 +231,7 @@ int kvmppc_xive_attach_escalation(struct kvm_vcpu *vcpu, u8 prio,
xive_vm_esb_load(xd, XIVE_ESB_SET_PQ_01);
vcpu->arch.xive_esc_raddr = xd->eoi_page;
vcpu->arch.xive_esc_vaddr = (__force u64)xd->eoi_mmio;
xd->flags |= XIVE_IRQ_NO_EOI;
xd->flags |= XIVE_IRQ_FLAG_NO_EOI;
}
return 0;

2
arch/powerpc/sysdev/xive/common.c
View File

@ -416,7 +416,7 @@ static void xive_irq_eoi(struct irq_data *d)
* been passed-through to a KVM guest
*/
if (!irqd_irq_disabled(d) && !irqd_is_forwarded_to_vcpu(d) &&
!(xd->flags & XIVE_IRQ_NO_EOI))
!(xd->flags & XIVE_IRQ_FLAG_NO_EOI))
xive_do_source_eoi(irqd_to_hwirq(d), xd);
else
xd->stale_p = true;