Hi Simon,
On Wed, Apr 29, 2015 at 10:25 AM, Simon Glass sjg@chromium.org wrote:
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 sjg@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) \ ({ \ --
For completeness, should we add msr_clrbits_64() as well?
Regards, Bin