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KVM: x86: Optimize local variable in start_sw_tscdeadline()

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Change the data type of the local variable this_tsc_khz to u32 because
virtual_tsc_khz is also declared as u32.

Since do_div() casts the divisor to u32 anyway, changing the data type
of this_tsc_khz to u32 also removes the following Coccinelle/coccicheck
warning reported by do_div.cocci:

  WARNING: do_div() does a 64-by-32 division, please consider using div64_ul instead

Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Link: https://lore.kernel.org/r/20240814203345.2234-2-thorsten.blum@toblux.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Thorsten Blum 2024-08-14 22:33:46 +02:00 committed by Sean Christopherson
parent 47ac09b91b
commit 1448d4a935
1 changed files with 1 additions and 1 deletions
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arch/x86/kvm/lapic.c
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@ -1944,7 +1944,7 @@ static void start_sw_tscdeadline(struct kvm_lapic *apic)
u64 ns = 0;
ktime_t expire;
struct kvm_vcpu *vcpu = apic->vcpu;
unsigned long this_tsc_khz = vcpu->arch.virtual_tsc_khz;
u32 this_tsc_khz = vcpu->arch.virtual_tsc_khz;
unsigned long flags;
ktime_t now;