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kvm: x86: ioapic and apic debug macros cleanup 

The ioapic_debug and apic_debug have been not used
for years, and kvm tracepoints are enough for debugging,
so remove them as Paolo suggested.

However, there may be something wrong when pv evi get/put
user, so it's better to retain some log there.

Signed-off-by: Yi Wang <wang.yi59@zte.com.cn>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Yi Wang 2019-07-06 01:08:48 +08:00 committed by Paolo Bonzini
parent 9a5611af5e
commit 0d88800d54
2 changed files with 9 additions and 101 deletions
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15
arch/x86/kvm/ioapic.c
View File

@ -45,11 +45,6 @@
#include "lapic.h"
#include "irq.h"
#if 0
#define ioapic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg)
#else
#define ioapic_debug(fmt, arg...)
#endif
static int ioapic_service(struct kvm_ioapic *vioapic, int irq,
bool line_status);
@ -294,7 +289,6 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
default:
index = (ioapic->ioregsel - 0x10) >> 1;
ioapic_debug("change redir index %x val %x\n", index, val);
if (index >= IOAPIC_NUM_PINS)
return;
e = &ioapic->redirtbl[index];
@ -343,12 +337,6 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
entry->fields.remote_irr))
return -1;
ioapic_debug("dest=%x dest_mode=%x delivery_mode=%x "
"vector=%x trig_mode=%x\n",
entry->fields.dest_id, entry->fields.dest_mode,
entry->fields.delivery_mode, entry->fields.vector,
entry->fields.trig_mode);
irqe.dest_id = entry->fields.dest_id;
irqe.vector = entry->fields.vector;
irqe.dest_mode = entry->fields.dest_mode;
@ -515,7 +503,6 @@ static int ioapic_mmio_read(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
if (!ioapic_in_range(ioapic, addr))
return -EOPNOTSUPP;
ioapic_debug("addr %lx\n", (unsigned long)addr);
ASSERT(!(addr & 0xf)); /* check alignment */
addr &= 0xff;
@ -558,8 +545,6 @@ static int ioapic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
if (!ioapic_in_range(ioapic, addr))
return -EOPNOTSUPP;
ioapic_debug("ioapic_mmio_write addr=%p len=%d val=%p\n",
(void*)addr, len, val);
ASSERT(!(addr & 0xf)); /* check alignment */
switch (len) {

95
arch/x86/kvm/lapic.c
View File

@ -52,9 +52,6 @@
#define PRIu64 "u"
#define PRIo64 "o"
/* #define apic_debug(fmt,arg...) printk(KERN_WARNING fmt,##arg) */
#define apic_debug(fmt, arg...) do {} while (0)
/* 14 is the version for Xeon and Pentium 8.4.8*/
#define APIC_VERSION (0x14UL | ((KVM_APIC_LVT_NUM - 1) << 16))
#define LAPIC_MMIO_LENGTH (1 << 12)
@ -627,7 +624,7 @@ static bool pv_eoi_get_pending(struct kvm_vcpu *vcpu)
{
u8 val;
if (pv_eoi_get_user(vcpu, &val) < 0)
apic_debug("Can't read EOI MSR value: 0x%llx\n",
printk(KERN_WARNING "Can't read EOI MSR value: 0x%llx\n",
(unsigned long long)vcpu->arch.pv_eoi.msr_val);
return val & 0x1;
}
@ -635,7 +632,7 @@ static bool pv_eoi_get_pending(struct kvm_vcpu *vcpu)
static void pv_eoi_set_pending(struct kvm_vcpu *vcpu)
{
if (pv_eoi_put_user(vcpu, KVM_PV_EOI_ENABLED) < 0) {
apic_debug("Can't set EOI MSR value: 0x%llx\n",
printk(KERN_WARNING "Can't set EOI MSR value: 0x%llx\n",
(unsigned long long)vcpu->arch.pv_eoi.msr_val);
return;
}
@ -645,7 +642,7 @@ static void pv_eoi_set_pending(struct kvm_vcpu *vcpu)
static void pv_eoi_clr_pending(struct kvm_vcpu *vcpu)
{
if (pv_eoi_put_user(vcpu, KVM_PV_EOI_DISABLED) < 0) {
apic_debug("Can't clear EOI MSR value: 0x%llx\n",
printk(KERN_WARNING "Can't clear EOI MSR value: 0x%llx\n",
(unsigned long long)vcpu->arch.pv_eoi.msr_val);
return;
}
@ -679,9 +676,6 @@ static bool __apic_update_ppr(struct kvm_lapic *apic, u32 *new_ppr)
else
ppr = isrv & 0xf0;
apic_debug("vlapic %p, ppr 0x%x, isr 0x%x, isrv 0x%x",
apic, ppr, isr, isrv);
*new_ppr = ppr;
if (old_ppr != ppr)
kvm_lapic_set_reg(apic, APIC_PROCPRI, ppr);
@ -758,8 +752,6 @@ static bool kvm_apic_match_logical_addr(struct kvm_lapic *apic, u32 mda)
return ((logical_id >> 4) == (mda >> 4))
&& (logical_id & mda & 0xf) != 0;
default:
apic_debug("Bad DFR vcpu %d: %08x\n",
apic->vcpu->vcpu_id, kvm_lapic_get_reg(apic, APIC_DFR));
return false;
}
}
@ -798,10 +790,6 @@ bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
struct kvm_lapic *target = vcpu->arch.apic;
u32 mda = kvm_apic_mda(vcpu, dest, source, target);
apic_debug("target %p, source %p, dest 0x%x, "
"dest_mode 0x%x, short_hand 0x%x\n",
target, source, dest, dest_mode, short_hand);
ASSERT(target);
switch (short_hand) {
case APIC_DEST_NOSHORT:
@ -816,8 +804,6 @@ bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
case APIC_DEST_ALLBUT:
return target != source;
default:
apic_debug("kvm: apic: Bad dest shorthand value %x\n",
short_hand);
return false;
}
}
@ -1095,15 +1081,10 @@ static int __apic_accept_irq(struct kvm_lapic *apic, int delivery_mode,
smp_wmb();
kvm_make_request(KVM_REQ_EVENT, vcpu);
kvm_vcpu_kick(vcpu);
} else {
apic_debug("Ignoring de-assert INIT to vcpu %d\n",
vcpu->vcpu_id);
}
break;
case APIC_DM_STARTUP:
apic_debug("SIPI to vcpu %d vector 0x%02x\n",
vcpu->vcpu_id, vector);
result = 1;
apic->sipi_vector = vector;
/* make sure sipi_vector is visible for the receiver */
@ -1221,14 +1202,6 @@ static void apic_send_ipi(struct kvm_lapic *apic)
trace_kvm_apic_ipi(icr_low, irq.dest_id);
apic_debug("icr_high 0x%x, icr_low 0x%x, "
"short_hand 0x%x, dest 0x%x, trig_mode 0x%x, level 0x%x, "
"dest_mode 0x%x, delivery_mode 0x%x, vector 0x%x, "
"msi_redir_hint 0x%x\n",
icr_high, icr_low, irq.shorthand, irq.dest_id,
irq.trig_mode, irq.level, irq.dest_mode, irq.delivery_mode,
irq.vector, irq.msi_redir_hint);
kvm_irq_delivery_to_apic(apic->vcpu->kvm, apic, &irq, NULL);
}
@ -1282,7 +1255,6 @@ static u32 __apic_read(struct kvm_lapic *apic, unsigned int offset)
switch (offset) {
case APIC_ARBPRI:
apic_debug("Access APIC ARBPRI register which is for P6\n");
break;
case APIC_TMCCT: /* Timer CCR */
@ -1349,11 +1321,8 @@ int kvm_lapic_reg_read(struct kvm_lapic *apic, u32 offset, int len,
if (!apic_x2apic_mode(apic))
valid_reg_mask |= APIC_REG_MASK(APIC_ARBPRI);
if (offset > 0x3f0 || !(valid_reg_mask & APIC_REG_MASK(offset))) {
apic_debug("KVM_APIC_READ: read reserved register %x\n",
offset);
if (offset > 0x3f0 || !(valid_reg_mask & APIC_REG_MASK(offset)))
return 1;
}
result = __apic_read(apic, offset & ~0xf);
@ -1411,9 +1380,6 @@ static void update_divide_count(struct kvm_lapic *apic)
tmp1 = tdcr & 0xf;
tmp2 = ((tmp1 & 0x3) | ((tmp1 & 0x8) >> 1)) + 1;
apic->divide_count = 0x1 << (tmp2 & 0x7);
apic_debug("timer divide count is 0x%x\n",
apic->divide_count);
}
static void limit_periodic_timer_frequency(struct kvm_lapic *apic)
@ -1648,16 +1614,6 @@ static bool set_target_expiration(struct kvm_lapic *apic)
limit_periodic_timer_frequency(apic);
apic_debug("%s: bus cycle is %" PRId64 "ns, now 0x%016"
PRIx64 ", "
"timer initial count 0x%x, period %lldns, "
"expire @ 0x%016" PRIx64 ".\n", __func__,
APIC_BUS_CYCLE_NS, ktime_to_ns(now),
kvm_lapic_get_reg(apic, APIC_TMICT),
apic->lapic_timer.period,
ktime_to_ns(ktime_add_ns(now,
apic->lapic_timer.period)));
apic->lapic_timer.tscdeadline = kvm_read_l1_tsc(apic->vcpu, tscl) +
nsec_to_cycles(apic->vcpu, apic->lapic_timer.period);
apic->lapic_timer.target_expiration = ktime_add_ns(now, apic->lapic_timer.period);
@ -1860,8 +1816,6 @@ static void apic_manage_nmi_watchdog(struct kvm_lapic *apic, u32 lvt0_val)
if (apic->lvt0_in_nmi_mode != lvt0_in_nmi_mode) {
apic->lvt0_in_nmi_mode = lvt0_in_nmi_mode;
if (lvt0_in_nmi_mode) {
apic_debug("Receive NMI setting on APIC_LVT0 "
"for cpu %d\n", apic->vcpu->vcpu_id);
atomic_inc(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
} else
atomic_dec(&apic->vcpu->kvm->arch.vapics_in_nmi_mode);
@ -1975,8 +1929,6 @@ int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
case APIC_TDCR: {
uint32_t old_divisor = apic->divide_count;
if (val & 4)
apic_debug("KVM_WRITE:TDCR %x\n", val);
kvm_lapic_set_reg(apic, APIC_TDCR, val);
update_divide_count(apic);
if (apic->divide_count != old_divisor &&
@ -1988,10 +1940,8 @@ int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
break;
}
case APIC_ESR:
if (apic_x2apic_mode(apic) && val != 0) {
apic_debug("KVM_WRITE:ESR not zero %x\n", val);
if (apic_x2apic_mode(apic) && val != 0)
ret = 1;
}
break;
case APIC_SELF_IPI:
@ -2004,8 +1954,7 @@ int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val)
ret = 1;
break;
}
if (ret)
apic_debug("Local APIC Write to read-only register %x\n", reg);
return ret;
}
EXPORT_SYMBOL_GPL(kvm_lapic_reg_write);
@ -2033,20 +1982,12 @@ static int apic_mmio_write(struct kvm_vcpu *vcpu, struct kvm_io_device *this,
* 32/64/128 bits registers must be accessed thru 32 bits.
* Refer SDM 8.4.1
*/
if (len != 4 || (offset & 0xf)) {
/* Don't shout loud, $infamous_os would cause only noise. */
apic_debug("apic write: bad size=%d %lx\n", len, (long)address);
if (len != 4 || (offset & 0xf))
return 0;
}
val = *(u32*)data;
/* too common printing */
if (offset != APIC_EOI)
apic_debug("%s: offset 0x%x with length 0x%x, and value is "
"0x%x\n", __func__, offset, len, val);
kvm_lapic_reg_write(apic, offset, val);
kvm_lapic_reg_write(apic, offset & 0xff0, val);
return 0;
}
@ -2178,11 +2119,6 @@ void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value)
if ((value & MSR_IA32_APICBASE_ENABLE) &&
apic->base_address != APIC_DEFAULT_PHYS_BASE)
pr_warn_once("APIC base relocation is unsupported by KVM");
/* with FSB delivery interrupt, we can restart APIC functionality */
apic_debug("apic base msr is 0x%016" PRIx64 ", and base address is "
"0x%lx.\n", apic->vcpu->arch.apic_base, apic->base_address);
}
void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event)
@ -2193,8 +2129,6 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event)
if (!apic)
return;
apic_debug("%s\n", __func__);
/* Stop the timer in case it's a reset to an active apic */
hrtimer_cancel(&apic->lapic_timer.timer);
@ -2247,11 +2181,6 @@ void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event)
vcpu->arch.apic_arb_prio = 0;
vcpu->arch.apic_attention = 0;
apic_debug("%s: vcpu=%p, id=0x%x, base_msr="
"0x%016" PRIx64 ", base_address=0x%0lx.\n", __func__,
vcpu, kvm_lapic_get_reg(apic, APIC_ID),
vcpu->arch.apic_base, apic->base_address);
}
/*
@ -2323,7 +2252,6 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu, int timer_advance_ns)
struct kvm_lapic *apic;
ASSERT(vcpu != NULL);
apic_debug("apic_init %d\n", vcpu->vcpu_id);
apic = kzalloc(sizeof(*apic), GFP_KERNEL_ACCOUNT);
if (!apic)
@ -2678,11 +2606,8 @@ int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data)
if (!lapic_in_kernel(vcpu) || !apic_x2apic_mode(apic))
return 1;
if (reg == APIC_DFR || reg == APIC_ICR2) {
apic_debug("KVM_APIC_READ: read x2apic reserved register %x\n",
reg);
if (reg == APIC_DFR || reg == APIC_ICR2)
return 1;
}
if (kvm_lapic_reg_read(apic, reg, 4, &low))
return 1;
@ -2780,8 +2705,6 @@ void kvm_apic_accept_events(struct kvm_vcpu *vcpu)
/* evaluate pending_events before reading the vector */
smp_rmb();
sipi_vector = apic->sipi_vector;
apic_debug("vcpu %d received sipi with vector # %x\n",
vcpu->vcpu_id, sipi_vector);
kvm_vcpu_deliver_sipi_vector(vcpu, sipi_vector);
vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
}