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Commit 7f1c410d authored by Benjamin Herrenschmidt's avatar Benjamin Herrenschmidt Committed by Michael Ellerman
Browse files

powerpc/xive: Add interrupt flag to disable automatic EOI 



This will be used by KVM in order to keep escalation interrupts
in the non-EOI (masked) state after they fire. They will be
re-enabled directly in HW by KVM when needed.

Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 12c1f339

arch/powerpc/include/asm/xive.h

+3 −0
Original line number Diff line number Diff line
@@ -58,6 +58,9 @@ struct xive_irq_data { 
#define XIVE_IRQ_FLAG_EOI_FW	0x10

#define XIVE_IRQ_FLAG_H_INT_ESB	0x20



/* Special flag set by KVM for excalation interrupts */

#define XIVE_IRQ_NO_EOI		0x80



#define XIVE_INVALID_CHIP_ID	-1



/* A queue tracking structure in a CPU */

arch/powerpc/sysdev/xive/common.c

+2 −1
Original line number Diff line number Diff line
@@ -367,7 +367,8 @@ static void xive_irq_eoi(struct irq_data *d) 
	 * EOI the source if it hasn't been disabled and hasn't

	 * been passed-through to a KVM guest

	 */

	if (!irqd_irq_disabled(d) && !irqd_is_forwarded_to_vcpu(d))

	if (!irqd_irq_disabled(d) && !irqd_is_forwarded_to_vcpu(d) &&

	    !(xd->flags & XIVE_IRQ_NO_EOI))

		xive_do_source_eoi(irqd_to_hwirq(d), xd);



	/*