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| author | Paolo Bonzini <pbonzini@redhat.com> | 2017-02-09 16:01:23 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2017-02-09 16:01:23 +0100 |
| commit | 2e751dfb5ffd20d1a31837dbc9718741df69bffe (patch) | |
| tree | 8b7e0e47cf0ef4efda0f1090f0ccbbeb17e5a085 /tools/virtio/ringtest/main.h | |
| parent | a0e136d436ded817c0aade72efdefa56a00b4e5e (diff) | |
| parent | 7b6b46311a8562fb3a9e035ed6ffab6d49c28886 (diff) | |
Merge tag 'kvmarm-for-4.11' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
kvmarm updates for 4.11
- GICv3 save restore
- Cache flushing fixes
- MSI injection fix for GICv3 ITS
- Physical timer emulation support
Diffstat (limited to 'tools/virtio/ringtest/main.h')
| -rw-r--r-- | tools/virtio/ringtest/main.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/tools/virtio/ringtest/main.h b/tools/virtio/ringtest/main.h index 34e63cc4c572..14142faf040b 100644 --- a/tools/virtio/ringtest/main.h +++ b/tools/virtio/ringtest/main.h @@ -26,6 +26,16 @@ static inline void wait_cycles(unsigned long long cycles) #define VMEXIT_CYCLES 500 #define VMENTRY_CYCLES 500 +#elif defined(__s390x__) +static inline void wait_cycles(unsigned long long cycles) +{ + asm volatile("0: brctg %0,0b" : : "d" (cycles)); +} + +/* tweak me */ +#define VMEXIT_CYCLES 200 +#define VMENTRY_CYCLES 200 + #else static inline void wait_cycles(unsigned long long cycles) { @@ -81,6 +91,8 @@ extern unsigned ring_size; /* Is there a portable way to do this? */ #if defined(__x86_64__) || defined(__i386__) #define cpu_relax() asm ("rep; nop" ::: "memory") +#elif defined(__s390x__) +#define cpu_relax() barrier() #else #define cpu_relax() assert(0) #endif |