diff options
| author | Borislav Petkov <bp@suse.de> | 2015-11-23 13:12:26 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-11-24 11:15:55 +0300 |
| commit | 679bcea857d72868e3431dde3a0e158bf0ed9119 (patch) | |
| tree | bb4a914b5cfd6931c8c1696dd1f8b6bc1fdfea94 /arch/x86/include/asm/msr.h | |
| parent | 31ac34ca5636e596485c6e03df1879643bde585e (diff) | |
| download | linux-679bcea857d72868e3431dde3a0e158bf0ed9119.tar.xz | |
x86/MSR: Chop off lower 32-bit value
sparse complains that the cast truncates the high bits. But here
we really do know what we're doing and we need the lower 32 bits
only as the @low argument. So make that explicit.
Suggested-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1448273546-2567-7-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/msr.h')
| -rw-r--r-- | arch/x86/include/asm/msr.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/msr.h b/arch/x86/include/asm/msr.h index 77d8b284e4a7..86133827c75c 100644 --- a/arch/x86/include/asm/msr.h +++ b/arch/x86/include/asm/msr.h @@ -190,7 +190,7 @@ static inline void wrmsr(unsigned msr, unsigned low, unsigned high) static inline void wrmsrl(unsigned msr, u64 val) { - native_write_msr(msr, (u32)val, (u32)(val >> 32)); + native_write_msr(msr, (u32)(val & 0xffffffffULL), (u32)(val >> 32)); } /* wrmsr with exception handling */ |