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Subject[PATCH v2 7/8] KVM: x86: de-underscorify __emulator_pio_in
Date
Now all callers except emulator_pio_in_emulated are using
__emulator_pio_in/complete_emulator_pio_in explicitly.
Move the "either copy the result or attempt PIO" logic in
emulator_pio_in_emulated, and rename __emulator_pio_in to
just emulator_pio_in.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
arch/x86/kvm/x86.c | 24 +++++++++---------------
1 file changed, 9 insertions(+), 15 deletions(-)

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index b824ffc63b17..1a017a5a680b 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7626,8 +7626,8 @@ static int emulator_pio_in_out(struct kvm_vcpu *vcpu, int size,
return 0;
}

-static int __emulator_pio_in(struct kvm_vcpu *vcpu, int size,
- unsigned short port, void *val, unsigned int count)
+static int emulator_pio_in(struct kvm_vcpu *vcpu, int size,
+ unsigned short port, void *val, unsigned int count)
{
int r = emulator_pio_in_out(vcpu, size, port, val, count, true);
if (r)
@@ -7645,9 +7645,11 @@ static void complete_emulator_pio_in(struct kvm_vcpu *vcpu, void *val)
vcpu->arch.pio.count = 0;
}

-static int emulator_pio_in(struct kvm_vcpu *vcpu, int size,
- unsigned short port, void *val, unsigned int count)
+static int emulator_pio_in_emulated(struct x86_emulate_ctxt *ctxt,
+ int size, unsigned short port, void *val,
+ unsigned int count)
{
+ struct kvm_vcpu *vcpu = emul_to_vcpu(ctxt);
if (vcpu->arch.pio.count) {
/*
* Complete a previous iteration that required userspace I/O.
@@ -7660,15 +7662,7 @@ static int emulator_pio_in(struct kvm_vcpu *vcpu, int size,
return 1;
}

- return __emulator_pio_in(vcpu, size, port, val, count);
-}
-
-static int emulator_pio_in_emulated(struct x86_emulate_ctxt *ctxt,
- int size, unsigned short port, void *val,
- unsigned int count)
-{
- return emulator_pio_in(emul_to_vcpu(ctxt), size, port, val, count);
-
+ return emulator_pio_in(vcpu, size, port, val, count);
}

static int emulator_pio_out(struct kvm_vcpu *vcpu, int size,
@@ -8886,7 +8880,7 @@ static int kvm_fast_pio_in(struct kvm_vcpu *vcpu, int size,
/* For size less than 4 we merge, else we zero extend */
val = (size < 4) ? kvm_rax_read(vcpu) : 0;

- ret = __emulator_pio_in(vcpu, size, port, &val, 1);
+ ret = emulator_pio_in(vcpu, size, port, &val, 1);
if (ret) {
kvm_rax_write(vcpu, val);
return ret;
@@ -13277,7 +13271,7 @@ static int kvm_sev_es_ins(struct kvm_vcpu *vcpu, unsigned int size,
for (;;) {
unsigned int count =
min_t(unsigned int, PAGE_SIZE / size, vcpu->arch.sev_pio_count);
- if (!__emulator_pio_in(vcpu, size, port, vcpu->arch.sev_pio_data, count))
+ if (!emulator_pio_in(vcpu, size, port, vcpu->arch.sev_pio_data, count))
break;

/* Emulation done by the kernel. */
--
2.31.1

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