diff options
| author | Xin Li (Intel) <xin@zytor.com> | 2025-04-27 02:20:26 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-05-02 10:36:36 +0200 |
| commit | 444b46a128ccd0883f83ffa2e6b4a1f64ea4ca1c (patch) | |
| tree | efa9f14929c3c23065cc77d6bb4464c9c53c56b1 /arch/x86/kernel/cpu/amd.c | |
| parent | 0c2678efed6c6a2908dfe14af1e93a6bebc78e79 (diff) | |
x86/msr: Replace wrmsr(msr, low, 0) with wrmsrq(msr, low)
The third argument in wrmsr(msr, low, 0) is unnecessary. Instead, use
wrmsrq(msr, low), which automatically sets the higher 32 bits of the
MSR value to 0.
Signed-off-by: Xin Li (Intel) <xin@zytor.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Cc: Uros Bizjak <ubizjak@gmail.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20250427092027.1598740-15-xin@zytor.com
Diffstat (limited to 'arch/x86/kernel/cpu/amd.c')
| -rw-r--r-- | arch/x86/kernel/cpu/amd.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/kernel/cpu/amd.c b/arch/x86/kernel/cpu/amd.c index e153cd1d36fe..d8365c4d9057 100644 --- a/arch/x86/kernel/cpu/amd.c +++ b/arch/x86/kernel/cpu/amd.c @@ -1207,7 +1207,7 @@ void amd_set_dr_addr_mask(unsigned long mask, unsigned int dr) if (per_cpu(amd_dr_addr_mask, cpu)[dr] == mask) return; - wrmsr(amd_msr_dr_addr_masks[dr], mask, 0); + wrmsrq(amd_msr_dr_addr_masks[dr], mask); per_cpu(amd_dr_addr_mask, cpu)[dr] = mask; } |