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/hyperv/hv_apic.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/hyperv/hv_apic.c')
| -rw-r--r-- | arch/x86/hyperv/hv_apic.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/x86/hyperv/hv_apic.c b/arch/x86/hyperv/hv_apic.c index a079a1427091..bfde0a3498b9 100644 --- a/arch/x86/hyperv/hv_apic.c +++ b/arch/x86/hyperv/hv_apic.c @@ -76,10 +76,10 @@ static void hv_apic_write(u32 reg, u32 val) { switch (reg) { case APIC_EOI: - wrmsr(HV_X64_MSR_EOI, val, 0); + wrmsrq(HV_X64_MSR_EOI, val); break; case APIC_TASKPRI: - wrmsr(HV_X64_MSR_TPR, val, 0); + wrmsrq(HV_X64_MSR_TPR, val); break; default: native_apic_mem_write(reg, val); @@ -93,7 +93,7 @@ static void hv_apic_eoi_write(void) if (hvp && (xchg(&hvp->apic_assist, 0) & 0x1)) return; - wrmsr(HV_X64_MSR_EOI, APIC_EOI_ACK, 0); + wrmsrq(HV_X64_MSR_EOI, APIC_EOI_ACK); } static bool cpu_is_self(int cpu) |