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KVM: improve arch vcpu request defining

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Marc Zyngier suggested that we define the arch specific VCPU request
base, rather than requiring each arch to remember to start from 8.
That suggestion, along with Radim Krcmar's recent VCPU request flag
addition, snowballed into defining something of an arch VCPU request
defining API.

No functional change.

(Looks like x86 is running out of arch VCPU request bits.  Maybe
 someday we'll need to extend to 64.)

Signed-off-by: Andrew Jones <drjones@redhat.com>
Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
This commit is contained in:
Andrew Jones
2017-06-04 14:43:51 +02:00
committed by Christoffer Dall
parent 0710f9a637
commit 2387149ead
6 changed files with 41 additions and 29 deletions
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4
arch/powerpc/include/asm/kvm_host.h
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@@ -52,8 +52,8 @@
#define KVM_IRQCHIP_NUM_PINS 256
/* PPC-specific vcpu->requests bit members */
#define KVM_REQ_WATCHDOG 8
#define KVM_REQ_EPR_EXIT 9
#define KVM_REQ_WATCHDOG KVM_ARCH_REQ(0)
#define KVM_REQ_EPR_EXIT KVM_ARCH_REQ(1)
#include <linux/mmu_notifier.h>