Since we do these sorts of operations a lot, it is useful to have a simpler
API, similar to clrsetbits_le32().
Signed-off-by: Simon Glass <s...@chromium.org>
---
Changes in v2: None
arch/x86/include/asm/msr.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h
index 1955a75..5349519 100644
--- a/arch/x86/include/asm/msr.h
+++ b/arch/x86/include/asm/msr.h
@@ -128,6 +128,25 @@ static inline void wrmsr(unsigned msr, unsigned low,
unsigned high)
#define wrmsrl(msr, val) \
native_write_msr((msr), (u32)((u64)(val)), (u32)((u64)(val) >> 32))
+static inline void msr_clrsetbits_64(unsigned msr, u64 clear, u64 set)
+{
+ u64 val;
+
+ val = native_read_msr(msr);
+ val &= ~clear;
+ val |= set;
+ wrmsrl(msr, val);
+}
+
+static inline void msr_setbits_64(unsigned msr, u64 set)
+{
+ u64 val;
+
+ val = native_read_msr(msr);
+ val |= set;
+ wrmsrl(msr, val);
+}
+
/* rdmsr with exception handling */
#define rdmsr_safe(msr, p1, p2) \
({ \
--
2.2.0.rc0.207.ga3a616c
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