[kvm-unit-tests PATCH v5 3/4] s390x: lib: add SPX and STPX instruction wrapper

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Add a wrapper for the SET PREFIX and STORE PREFIX instructions, and
use it instead of using inline assembly everywhere.

Signed-off-by: Claudio Imbrenda <imbrenda@xxxxxxxxxxxxx>
---
 lib/s390x/asm/arch_def.h | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/lib/s390x/asm/arch_def.h b/lib/s390x/asm/arch_def.h
index 1a5e3c6..38c9dfa 100644
--- a/lib/s390x/asm/arch_def.h
+++ b/lib/s390x/asm/arch_def.h
@@ -284,4 +284,17 @@ static inline int servc(uint32_t command, unsigned long sccb)
 	return cc;
 }
 
+static inline void spx(uint32_t new_prefix)
+{
+	asm volatile("spx %0" : : "Q" (new_prefix) : "memory");
+}
+
+static inline uint32_t stpx(void)
+{
+	uint32_t prefix;
+
+	asm volatile("stpx %0" : "=Q" (prefix));
+	return prefix;
+}
+
 #endif
-- 
2.24.1




[Index of Archives]     [KVM ARM]     [KVM ia64]     [KVM ppc]     [Virtualization Tools]     [Spice Development]     [Libvirt]     [Libvirt Users]     [Linux USB Devel]     [Linux Audio Users]     [Yosemite Questions]     [Linux Kernel]     [Linux SCSI]     [XFree86]

  Powered by Linux