Re: [PATCH] kvm: x86: ioapic and apic debug macros cleanup
On 05/07/19 19:08, Yi Wang wrote:
> 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
> ---
> arch/x86/kvm/ioapic.c | 15
> arch/x86/kvm/lapic.c | 98
> +--
> 2 files changed, 9 insertions(+), 104 deletions(-)
>
> diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
> index 1add1bc..d859ae8 100644
> --- a/arch/x86/kvm/ioapic.c
> +++ b/arch/x86/kvm/ioapic.c
> @@ -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) {
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index 4dabc31..0f3b57e 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -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)
> @@ -631,7 +628,7 @@ 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;
> }
> @@ -639,7 +636,7 @@ 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;
> }
> @@ -649,7 +646,7 @@ 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;
> }
> @@ -683,9 +680,6 @@ 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);
> @@ -762,8 +756,6 @@ static bool kvm_apic_match_logical_addr(struct kvm_lapic
> *apic, u32 mda)
> return ((logical_id >> 4) == (mda >> 4))
Re: [PATCH] kvm: x86: ioapic and apic debug macros cleanup
Hi Paolo,
Would you help to review this patch, plz?
Many thanks.
---
Best wishes
Yi Wang
> 在 2019年7月6日，01:08，Yi Wang 写道：
>
> 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
> ---
> arch/x86/kvm/ioapic.c | 15
> arch/x86/kvm/lapic.c | 98 +--
> 2 files changed, 9 insertions(+), 104 deletions(-)
>
> diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
> index 1add1bc..d859ae8 100644
> --- a/arch/x86/kvm/ioapic.c
> +++ b/arch/x86/kvm/ioapic.c
> @@ -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) {
> diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
> index 4dabc31..0f3b57e 100644
> --- a/arch/x86/kvm/lapic.c
> +++ b/arch/x86/kvm/lapic.c
> @@ -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)
> @@ -631,7 +628,7 @@ 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;
> }
> @@ -639,7 +636,7 @@ 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;
>}
> @@ -649,7 +646,7 @@ 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;
>}
> @@ -683,9 +680,6 @@ 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);
> @@ -762,8 +756,6 @@ 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 f
[PATCH] 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
---
arch/x86/kvm/ioapic.c | 15
arch/x86/kvm/lapic.c | 98 +--
2 files changed, 9 insertions(+), 104 deletions(-)
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index 1add1bc..d859ae8 100644
--- a/arch/x86/kvm/ioapic.c
+++ b/arch/x86/kvm/ioapic.c
@@ -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) {
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 4dabc31..0f3b57e 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -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)
@@ -631,7 +628,7 @@ 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;
}
@@ -639,7 +636,7 @@ 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;
}
@@ -649,7 +646,7 @@ 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;
}
@@ -683,9 +680,6 @@ 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);
@@ -762,8 +756,6 @@ 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
