[PATCH v4 08/18] KVM: arm64: selftests: Add support to disable and enable local IRQs

[Raghavendra Rao Ananta]

Add functions local_irq_enable() and local_irq_disable() to
enable and disable the IRQs from the guest, respectively.

Signed-off-by: Raghavendra Rao Ananta <rananta at google.com>
Reviewed-by: Oliver Upton <oupton at google.com>
Reviewed-by: Andrew Jones <drjones at redhat.com>
---
 .../testing/selftests/kvm/include/aarch64/processor.h  | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/tools/testing/selftests/kvm/include/aarch64/processor.h b/tools/testing/selftests/kvm/include/aarch64/processor.h
index 166d273ad715..b6088c3c67a3 100644
--- a/tools/testing/selftests/kvm/include/aarch64/processor.h
+++ b/tools/testing/selftests/kvm/include/aarch64/processor.h
@@ -184,4 +184,14 @@ static __always_inline u32 __raw_readl(const volatile void *addr)
 #define writel(v,c)		({ __iowmb(); writel_relaxed((v),(c));})
 #define readl(c)		({ u32 __v = readl_relaxed(c); __iormb(__v); __v; })
 
+static inline void local_irq_enable(void)
+{
+	asm volatile("msr daifclr, #3" : : : "memory");
+}
+
+static inline void local_irq_disable(void)
+{
+	asm volatile("msr daifset, #3" : : : "memory");
+}
+
 #endif /* SELFTEST_KVM_PROCESSOR_H */
-- 
2.33.0.153.gba50c8fa24-goog