* [PATCH v4 1/6] KVM: X86: Fix kvm_bitmap_or_dest_vcpus() to use irq shorthand
2019-12-03 16:58 [PATCH v4 0/6] KVM: X86: Cleanups on dest_mode and headers Peter Xu
@ 2019-12-03 16:58 ` Peter Xu
2019-12-03 16:58 ` [PATCH v4 2/6] KVM: X86: Move irrelevant declarations out of ioapic.h Peter Xu
` (4 subsequent siblings)
5 siblings, 0 replies; 13+ messages in thread
From: Peter Xu @ 2019-12-03 16:58 UTC (permalink / raw)
To: linux-kernel, kvm
Cc: Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson, peterx,
Vitaly Kuznetsov
The 3rd parameter of kvm_apic_match_dest() is the irq shorthand,
rather than the irq delivery mode.
Fixes: 7ee30bc132c6 ("KVM: x86: deliver KVM IOAPIC scan request to target vCPUs")
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/x86/kvm/lapic.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index cf9177b4a07f..1eabe58bb6d5 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -1151,7 +1151,7 @@ void kvm_bitmap_or_dest_vcpus(struct kvm *kvm, struct kvm_lapic_irq *irq,
if (!kvm_apic_present(vcpu))
continue;
if (!kvm_apic_match_dest(vcpu, NULL,
- irq->delivery_mode,
+ irq->shorthand,
irq->dest_id,
irq->dest_mode))
continue;
--
2.21.0
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 2/6] KVM: X86: Move irrelevant declarations out of ioapic.h
2019-12-03 16:58 [PATCH v4 0/6] KVM: X86: Cleanups on dest_mode and headers Peter Xu
2019-12-03 16:58 ` [PATCH v4 1/6] KVM: X86: Fix kvm_bitmap_or_dest_vcpus() to use irq shorthand Peter Xu
@ 2019-12-03 16:58 ` Peter Xu
2019-12-03 16:59 ` [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode Peter Xu
` (3 subsequent siblings)
5 siblings, 0 replies; 13+ messages in thread
From: Peter Xu @ 2019-12-03 16:58 UTC (permalink / raw)
To: linux-kernel, kvm
Cc: Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson, peterx,
Vitaly Kuznetsov
kvm_apic_match_dest() is declared in both ioapic.h and lapic.h.
Remove the declaration in ioapic.h.
kvm_apic_compare_prio() is declared in ioapic.h but defined in
lapic.c. Move the declaration to lapic.h.
kvm_irq_delivery_to_apic() is declared in ioapic.h but defined in
irq_comm.c. Move the declaration to irq.h.
hyperv.c needs to use kvm_irq_delivery_to_apic(). Include irq.h in
hyperv.c.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/x86/kvm/hyperv.c | 1 +
arch/x86/kvm/ioapic.h | 6 ------
arch/x86/kvm/irq.h | 3 +++
arch/x86/kvm/lapic.h | 2 +-
4 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 23ff65504d7e..c7d4640b7b1c 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -33,6 +33,7 @@
#include <trace/events/kvm.h>
#include "trace.h"
+#include "irq.h"
#define KVM_HV_MAX_SPARSE_VCPU_SET_BITS DIV_ROUND_UP(KVM_MAX_VCPUS, 64)
diff --git a/arch/x86/kvm/ioapic.h b/arch/x86/kvm/ioapic.h
index ea1a4e0297da..2fb2e3c80724 100644
--- a/arch/x86/kvm/ioapic.h
+++ b/arch/x86/kvm/ioapic.h
@@ -116,9 +116,6 @@ static inline int ioapic_in_kernel(struct kvm *kvm)
}
void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
-bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
- int short_hand, unsigned int dest, int dest_mode);
-int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
int trigger_mode);
int kvm_ioapic_init(struct kvm *kvm);
@@ -126,9 +123,6 @@ void kvm_ioapic_destroy(struct kvm *kvm);
int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
int level, bool line_status);
void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
-int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
- struct kvm_lapic_irq *irq,
- struct dest_map *dest_map);
void kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
void kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu,
diff --git a/arch/x86/kvm/irq.h b/arch/x86/kvm/irq.h
index 7c6233d37c64..f173ab6b407e 100644
--- a/arch/x86/kvm/irq.h
+++ b/arch/x86/kvm/irq.h
@@ -113,5 +113,8 @@ int apic_has_pending_timer(struct kvm_vcpu *vcpu);
int kvm_setup_default_irq_routing(struct kvm *kvm);
int kvm_setup_empty_irq_routing(struct kvm *kvm);
+int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
+ struct kvm_lapic_irq *irq,
+ struct dest_map *dest_map);
#endif
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 39925afdfcdc..0b9bbadd1f3c 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -83,7 +83,7 @@ int kvm_lapic_reg_read(struct kvm_lapic *apic, u32 offset, int len,
void *data);
bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
int short_hand, unsigned int dest, int dest_mode);
-
+int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
bool __kvm_apic_update_irr(u32 *pir, void *regs, int *max_irr);
bool kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir, int *max_irr);
void kvm_apic_update_ppr(struct kvm_vcpu *vcpu);
--
2.21.0
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode
2019-12-03 16:58 [PATCH v4 0/6] KVM: X86: Cleanups on dest_mode and headers Peter Xu
2019-12-03 16:58 ` [PATCH v4 1/6] KVM: X86: Fix kvm_bitmap_or_dest_vcpus() to use irq shorthand Peter Xu
2019-12-03 16:58 ` [PATCH v4 2/6] KVM: X86: Move irrelevant declarations out of ioapic.h Peter Xu
@ 2019-12-03 16:59 ` Peter Xu
2019-12-03 22:07 ` Sean Christopherson
2019-12-03 16:59 ` [PATCH v4 4/6] KVM: X86: Drop KVM_APIC_SHORT_MASK and KVM_APIC_DEST_MASK Peter Xu
` (2 subsequent siblings)
5 siblings, 1 reply; 13+ messages in thread
From: Peter Xu @ 2019-12-03 16:59 UTC (permalink / raw)
To: linux-kernel, kvm
Cc: Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson, peterx,
Vitaly Kuznetsov
We were using either APIC_DEST_PHYSICAL|APIC_DEST_LOGICAL or 0|1 to
fill in kvm_lapic_irq.dest_mode. It's fine only because in most cases
when we check against dest_mode it's against APIC_DEST_PHYSICAL (which
equals to 0). However, that's not consistent. We'll have problem
when we want to start checking against APIC_DEST_LOGICAL, which does
not equals to 1.
This patch firstly introduces kvm_lapic_irq_dest_mode() helper to take
any boolean of destination mode and return the APIC_DEST_* macro.
Then, it replaces the 0|1 settings of irq.dest_mode with the helper.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/x86/include/asm/kvm_host.h | 5 +++++
arch/x86/kvm/ioapic.c | 9 ++++++---
arch/x86/kvm/irq_comm.c | 7 ++++---
arch/x86/kvm/x86.c | 2 +-
4 files changed, 16 insertions(+), 7 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index b79cd6aa4075..f815c97b1b57 100644
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1022,6 +1022,11 @@ struct kvm_lapic_irq {
bool msi_redir_hint;
};
+static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode)
+{
+ return dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
+}
+
struct kvm_x86_ops {
int (*cpu_has_kvm_support)(void); /* __init */
int (*disabled_by_bios)(void); /* __init */
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index 9fd2dd89a1c5..e623a4f8d27e 100644
--- a/arch/x86/kvm/ioapic.c
+++ b/arch/x86/kvm/ioapic.c
@@ -331,7 +331,8 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
irq.vector = e->fields.vector;
irq.delivery_mode = e->fields.delivery_mode << 8;
irq.dest_id = e->fields.dest_id;
- irq.dest_mode = e->fields.dest_mode;
+ irq.dest_mode =
+ kvm_lapic_irq_dest_mode(!!e->fields.dest_mode);
bitmap_zero(&vcpu_bitmap, 16);
kvm_bitmap_or_dest_vcpus(ioapic->kvm, &irq,
&vcpu_bitmap);
@@ -343,7 +344,9 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
* keep ioapic_handled_vectors synchronized.
*/
irq.dest_id = old_dest_id;
- irq.dest_mode = old_dest_mode;
+ irq.dest_mode =
+ kvm_lapic_irq_dest_mode(
+ !!e->fields.dest_mode);
kvm_bitmap_or_dest_vcpus(ioapic->kvm, &irq,
&vcpu_bitmap);
}
@@ -369,7 +372,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
irqe.dest_id = entry->fields.dest_id;
irqe.vector = entry->fields.vector;
- irqe.dest_mode = entry->fields.dest_mode;
+ irqe.dest_mode = kvm_lapic_irq_dest_mode(!!entry->fields.dest_mode);
irqe.trig_mode = entry->fields.trig_mode;
irqe.delivery_mode = entry->fields.delivery_mode << 8;
irqe.level = 1;
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 8ecd48d31800..22108ed66a76 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -52,8 +52,8 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
unsigned long dest_vcpu_bitmap[BITS_TO_LONGS(KVM_MAX_VCPUS)];
unsigned int dest_vcpus = 0;
- if (irq->dest_mode == 0 && irq->dest_id == 0xff &&
- kvm_lowest_prio_delivery(irq)) {
+ if (irq->dest_mode == APIC_DEST_PHYSICAL &&
+ irq->dest_id == 0xff && kvm_lowest_prio_delivery(irq)) {
printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n");
irq->delivery_mode = APIC_DM_FIXED;
}
@@ -114,7 +114,8 @@ void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
irq->dest_id |= MSI_ADDR_EXT_DEST_ID(e->msi.address_hi);
irq->vector = (e->msi.data &
MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
- irq->dest_mode = (1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo;
+ irq->dest_mode = kvm_lapic_irq_dest_mode(
+ !!((1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo));
irq->trig_mode = (1 << MSI_DATA_TRIGGER_SHIFT) & e->msi.data;
irq->delivery_mode = e->msi.data & 0x700;
irq->msi_redir_hint = ((e->msi.address_lo
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3ed167e039e5..3b00d662dc14 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7356,7 +7356,7 @@ static void kvm_pv_kick_cpu_op(struct kvm *kvm, unsigned long flags, int apicid)
struct kvm_lapic_irq lapic_irq;
lapic_irq.shorthand = 0;
- lapic_irq.dest_mode = 0;
+ lapic_irq.dest_mode = APIC_DEST_PHYSICAL;
lapic_irq.level = 0;
lapic_irq.dest_id = apicid;
lapic_irq.msi_redir_hint = false;
--
2.21.0
^ permalink raw reply related [flat|nested] 13+ messages in thread* Re: [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode
2019-12-03 16:59 ` [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode Peter Xu
@ 2019-12-03 22:07 ` Sean Christopherson
2019-12-03 22:15 ` Peter Xu
0 siblings, 1 reply; 13+ messages in thread
From: Sean Christopherson @ 2019-12-03 22:07 UTC (permalink / raw)
To: Peter Xu
Cc: linux-kernel, kvm, Nitesh Narayan Lal, Paolo Bonzini, Vitaly Kuznetsov
On Tue, Dec 03, 2019 at 11:59:00AM -0500, Peter Xu wrote:
> We were using either APIC_DEST_PHYSICAL|APIC_DEST_LOGICAL or 0|1 to
> fill in kvm_lapic_irq.dest_mode. It's fine only because in most cases
> when we check against dest_mode it's against APIC_DEST_PHYSICAL (which
> equals to 0). However, that's not consistent. We'll have problem
> when we want to start checking against APIC_DEST_LOGICAL, which does
> not equals to 1.
>
> This patch firstly introduces kvm_lapic_irq_dest_mode() helper to take
> any boolean of destination mode and return the APIC_DEST_* macro.
> Then, it replaces the 0|1 settings of irq.dest_mode with the helper.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> arch/x86/include/asm/kvm_host.h | 5 +++++
> arch/x86/kvm/ioapic.c | 9 ++++++---
> arch/x86/kvm/irq_comm.c | 7 ++++---
> arch/x86/kvm/x86.c | 2 +-
> 4 files changed, 16 insertions(+), 7 deletions(-)
>
> diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> index b79cd6aa4075..f815c97b1b57 100644
> --- a/arch/x86/include/asm/kvm_host.h
> +++ b/arch/x86/include/asm/kvm_host.h
> @@ -1022,6 +1022,11 @@ struct kvm_lapic_irq {
> bool msi_redir_hint;
> };
>
> +static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode)
> +{
> + return dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
IMO this belongs in ioapic.c as it's specifically provided for converting
an I/O APIC redirection entry into a local APIC destination mode. Without
the I/O APIC context, %true==APIC_DEST_LOGICAL looks like a completely
arbitrary decision. And if it's in ioapic.c, it can take the union
of a bool, which avoids the casting and shortens the callers. E.g.:
static u64 ioapic_to_lapic_dest_mode(union kvm_ioapic_redirect_entry *e)
{
return e->fields.dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
}
The other option would be to use the same approach as delivery_mode and
open code the shift.
> +}
> +
> struct kvm_x86_ops {
> int (*cpu_has_kvm_support)(void); /* __init */
> int (*disabled_by_bios)(void); /* __init */
> diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
> index 9fd2dd89a1c5..e623a4f8d27e 100644
> --- a/arch/x86/kvm/ioapic.c
> +++ b/arch/x86/kvm/ioapic.c
> @@ -331,7 +331,8 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
> irq.vector = e->fields.vector;
> irq.delivery_mode = e->fields.delivery_mode << 8;
> irq.dest_id = e->fields.dest_id;
> - irq.dest_mode = e->fields.dest_mode;
> + irq.dest_mode =
> + kvm_lapic_irq_dest_mode(!!e->fields.dest_mode);
> bitmap_zero(&vcpu_bitmap, 16);
> kvm_bitmap_or_dest_vcpus(ioapic->kvm, &irq,
> &vcpu_bitmap);
> @@ -343,7 +344,9 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
> * keep ioapic_handled_vectors synchronized.
> */
> irq.dest_id = old_dest_id;
> - irq.dest_mode = old_dest_mode;
> + irq.dest_mode =
> + kvm_lapic_irq_dest_mode(
> + !!e->fields.dest_mode);
> kvm_bitmap_or_dest_vcpus(ioapic->kvm, &irq,
> &vcpu_bitmap);
> }
> @@ -369,7 +372,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
>
> irqe.dest_id = entry->fields.dest_id;
> irqe.vector = entry->fields.vector;
> - irqe.dest_mode = entry->fields.dest_mode;
> + irqe.dest_mode = kvm_lapic_irq_dest_mode(!!entry->fields.dest_mode);
> irqe.trig_mode = entry->fields.trig_mode;
> irqe.delivery_mode = entry->fields.delivery_mode << 8;
> irqe.level = 1;
> diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
> index 8ecd48d31800..22108ed66a76 100644
> --- a/arch/x86/kvm/irq_comm.c
> +++ b/arch/x86/kvm/irq_comm.c
> @@ -52,8 +52,8 @@ int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
> unsigned long dest_vcpu_bitmap[BITS_TO_LONGS(KVM_MAX_VCPUS)];
> unsigned int dest_vcpus = 0;
>
> - if (irq->dest_mode == 0 && irq->dest_id == 0xff &&
> - kvm_lowest_prio_delivery(irq)) {
> + if (irq->dest_mode == APIC_DEST_PHYSICAL &&
> + irq->dest_id == 0xff && kvm_lowest_prio_delivery(irq)) {
> printk(KERN_INFO "kvm: apic: phys broadcast and lowest prio\n");
> irq->delivery_mode = APIC_DM_FIXED;
> }
> @@ -114,7 +114,8 @@ void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
> irq->dest_id |= MSI_ADDR_EXT_DEST_ID(e->msi.address_hi);
> irq->vector = (e->msi.data &
> MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
> - irq->dest_mode = (1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo;
> + irq->dest_mode = kvm_lapic_irq_dest_mode(
> + !!((1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo));
> irq->trig_mode = (1 << MSI_DATA_TRIGGER_SHIFT) & e->msi.data;
> irq->delivery_mode = e->msi.data & 0x700;
> irq->msi_redir_hint = ((e->msi.address_lo
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 3ed167e039e5..3b00d662dc14 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -7356,7 +7356,7 @@ static void kvm_pv_kick_cpu_op(struct kvm *kvm, unsigned long flags, int apicid)
> struct kvm_lapic_irq lapic_irq;
>
> lapic_irq.shorthand = 0;
> - lapic_irq.dest_mode = 0;
> + lapic_irq.dest_mode = APIC_DEST_PHYSICAL;
> lapic_irq.level = 0;
> lapic_irq.dest_id = apicid;
> lapic_irq.msi_redir_hint = false;
> --
> 2.21.0
>
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode
2019-12-03 22:07 ` Sean Christopherson
@ 2019-12-03 22:15 ` Peter Xu
2019-12-03 22:20 ` Sean Christopherson
0 siblings, 1 reply; 13+ messages in thread
From: Peter Xu @ 2019-12-03 22:15 UTC (permalink / raw)
To: Sean Christopherson
Cc: linux-kernel, kvm, Nitesh Narayan Lal, Paolo Bonzini, Vitaly Kuznetsov
On Tue, Dec 03, 2019 at 02:07:52PM -0800, Sean Christopherson wrote:
> On Tue, Dec 03, 2019 at 11:59:00AM -0500, Peter Xu wrote:
> > We were using either APIC_DEST_PHYSICAL|APIC_DEST_LOGICAL or 0|1 to
> > fill in kvm_lapic_irq.dest_mode. It's fine only because in most cases
> > when we check against dest_mode it's against APIC_DEST_PHYSICAL (which
> > equals to 0). However, that's not consistent. We'll have problem
> > when we want to start checking against APIC_DEST_LOGICAL, which does
> > not equals to 1.
> >
> > This patch firstly introduces kvm_lapic_irq_dest_mode() helper to take
> > any boolean of destination mode and return the APIC_DEST_* macro.
> > Then, it replaces the 0|1 settings of irq.dest_mode with the helper.
> >
> > Signed-off-by: Peter Xu <peterx@redhat.com>
> > ---
> > arch/x86/include/asm/kvm_host.h | 5 +++++
> > arch/x86/kvm/ioapic.c | 9 ++++++---
> > arch/x86/kvm/irq_comm.c | 7 ++++---
> > arch/x86/kvm/x86.c | 2 +-
> > 4 files changed, 16 insertions(+), 7 deletions(-)
> >
> > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> > index b79cd6aa4075..f815c97b1b57 100644
> > --- a/arch/x86/include/asm/kvm_host.h
> > +++ b/arch/x86/include/asm/kvm_host.h
> > @@ -1022,6 +1022,11 @@ struct kvm_lapic_irq {
> > bool msi_redir_hint;
> > };
> >
> > +static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode)
> > +{
> > + return dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
>
> IMO this belongs in ioapic.c as it's specifically provided for converting
> an I/O APIC redirection entry into a local APIC destination mode. Without
> the I/O APIC context, %true==APIC_DEST_LOGICAL looks like a completely
> arbitrary decision. And if it's in ioapic.c, it can take the union
> of a bool, which avoids the casting and shortens the callers. E.g.:
>
> static u64 ioapic_to_lapic_dest_mode(union kvm_ioapic_redirect_entry *e)
> {
> return e->fields.dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
> }
>
> The other option would be to use the same approach as delivery_mode and
> open code the shift.
It's also used for MSI address encodings, please see below [1].
The thing is that no matter how external protocols define destination
mode, it's always a boolean no matter where it resides, or at which bit.
Thanks,
[...]
> > @@ -114,7 +114,8 @@ void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
> > irq->dest_id |= MSI_ADDR_EXT_DEST_ID(e->msi.address_hi);
> > irq->vector = (e->msi.data &
> > MSI_DATA_VECTOR_MASK) >> MSI_DATA_VECTOR_SHIFT;
> > - irq->dest_mode = (1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo;
> > + irq->dest_mode = kvm_lapic_irq_dest_mode(
> > + !!((1 << MSI_ADDR_DEST_MODE_SHIFT) & e->msi.address_lo));
[1]
> > irq->trig_mode = (1 << MSI_DATA_TRIGGER_SHIFT) & e->msi.data;
> > irq->delivery_mode = e->msi.data & 0x700;
> > irq->msi_redir_hint = ((e->msi.address_lo
--
Peter Xu
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode
2019-12-03 22:15 ` Peter Xu
@ 2019-12-03 22:20 ` Sean Christopherson
2019-12-04 18:48 ` Peter Xu
0 siblings, 1 reply; 13+ messages in thread
From: Sean Christopherson @ 2019-12-03 22:20 UTC (permalink / raw)
To: Peter Xu
Cc: linux-kernel, kvm, Nitesh Narayan Lal, Paolo Bonzini, Vitaly Kuznetsov
On Tue, Dec 03, 2019 at 05:15:19PM -0500, Peter Xu wrote:
> On Tue, Dec 03, 2019 at 02:07:52PM -0800, Sean Christopherson wrote:
> > On Tue, Dec 03, 2019 at 11:59:00AM -0500, Peter Xu wrote:
> > > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> > > index b79cd6aa4075..f815c97b1b57 100644
> > > --- a/arch/x86/include/asm/kvm_host.h
> > > +++ b/arch/x86/include/asm/kvm_host.h
> > > @@ -1022,6 +1022,11 @@ struct kvm_lapic_irq {
> > > bool msi_redir_hint;
> > > };
> > >
> > > +static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode)
> > > +{
> > > + return dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
> >
> > IMO this belongs in ioapic.c as it's specifically provided for converting
> > an I/O APIC redirection entry into a local APIC destination mode. Without
> > the I/O APIC context, %true==APIC_DEST_LOGICAL looks like a completely
> > arbitrary decision. And if it's in ioapic.c, it can take the union
> > of a bool, which avoids the casting and shortens the callers. E.g.:
> >
> > static u64 ioapic_to_lapic_dest_mode(union kvm_ioapic_redirect_entry *e)
> > {
> > return e->fields.dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
> > }
> >
> > The other option would be to use the same approach as delivery_mode and
> > open code the shift.
>
> It's also used for MSI address encodings, please see below [1].
Boooh. How about naming the param "logical_dest_mode" or something else
with "logical" in the name so that the correctness of the function itself
is apparent?
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode
2019-12-03 22:20 ` Sean Christopherson
@ 2019-12-04 18:48 ` Peter Xu
0 siblings, 0 replies; 13+ messages in thread
From: Peter Xu @ 2019-12-04 18:48 UTC (permalink / raw)
To: Sean Christopherson
Cc: linux-kernel, kvm, Nitesh Narayan Lal, Paolo Bonzini, Vitaly Kuznetsov
On Tue, Dec 03, 2019 at 02:20:36PM -0800, Sean Christopherson wrote:
> On Tue, Dec 03, 2019 at 05:15:19PM -0500, Peter Xu wrote:
> > On Tue, Dec 03, 2019 at 02:07:52PM -0800, Sean Christopherson wrote:
> > > On Tue, Dec 03, 2019 at 11:59:00AM -0500, Peter Xu wrote:
> > > > diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
> > > > index b79cd6aa4075..f815c97b1b57 100644
> > > > --- a/arch/x86/include/asm/kvm_host.h
> > > > +++ b/arch/x86/include/asm/kvm_host.h
> > > > @@ -1022,6 +1022,11 @@ struct kvm_lapic_irq {
> > > > bool msi_redir_hint;
> > > > };
> > > >
> > > > +static inline u16 kvm_lapic_irq_dest_mode(bool dest_mode)
> > > > +{
> > > > + return dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
> > >
> > > IMO this belongs in ioapic.c as it's specifically provided for converting
> > > an I/O APIC redirection entry into a local APIC destination mode. Without
> > > the I/O APIC context, %true==APIC_DEST_LOGICAL looks like a completely
> > > arbitrary decision. And if it's in ioapic.c, it can take the union
> > > of a bool, which avoids the casting and shortens the callers. E.g.:
> > >
> > > static u64 ioapic_to_lapic_dest_mode(union kvm_ioapic_redirect_entry *e)
> > > {
> > > return e->fields.dest_mode ? APIC_DEST_LOGICAL : APIC_DEST_PHYSICAL;
> > > }
> > >
> > > The other option would be to use the same approach as delivery_mode and
> > > open code the shift.
> >
> > It's also used for MSI address encodings, please see below [1].
>
> Boooh. How about naming the param "logical_dest_mode" or something else
> with "logical" in the name so that the correctness of the function itself
> is apparent?
Ok, will do. Thanks,
--
Peter Xu
^ permalink raw reply [flat|nested] 13+ messages in thread
* [PATCH v4 4/6] KVM: X86: Drop KVM_APIC_SHORT_MASK and KVM_APIC_DEST_MASK
2019-12-03 16:58 [PATCH v4 0/6] KVM: X86: Cleanups on dest_mode and headers Peter Xu
` (2 preceding siblings ...)
2019-12-03 16:59 ` [PATCH v4 3/6] KVM: X86: Use APIC_DEST_* macros properly in kvm_lapic_irq.dest_mode Peter Xu
@ 2019-12-03 16:59 ` Peter Xu
2019-12-03 16:59 ` [PATCH v4 5/6] KVM: X86: Fix callers of kvm_apic_match_dest() to use correct macros Peter Xu
2019-12-03 16:59 ` [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand = 0" to use macros Peter Xu
5 siblings, 0 replies; 13+ messages in thread
From: Peter Xu @ 2019-12-03 16:59 UTC (permalink / raw)
To: linux-kernel, kvm
Cc: Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson, peterx,
Vitaly Kuznetsov
We have both APIC_SHORT_MASK and KVM_APIC_SHORT_MASK defined for the
shorthand mask. Similarly, we have both APIC_DEST_MASK and
KVM_APIC_DEST_MASK defined for the destination mode mask.
Drop the KVM_APIC_* macros and replace the only user of them to use
the APIC_DEST_* macros instead. At the meantime, move APIC_SHORT_MASK
and APIC_DEST_MASK from lapic.c to lapic.h.
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/x86/kvm/lapic.c | 3 ---
arch/x86/kvm/lapic.h | 5 +++--
arch/x86/kvm/svm.c | 4 ++--
3 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 1eabe58bb6d5..805c18178bbf 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -56,9 +56,6 @@
#define APIC_VERSION (0x14UL | ((KVM_APIC_LVT_NUM - 1) << 16))
#define LAPIC_MMIO_LENGTH (1 << 12)
/* followed define is not in apicdef.h */
-#define APIC_SHORT_MASK 0xc0000
-#define APIC_DEST_NOSHORT 0x0
-#define APIC_DEST_MASK 0x800
#define MAX_APIC_VECTOR 256
#define APIC_VECTORS_PER_REG 32
diff --git a/arch/x86/kvm/lapic.h b/arch/x86/kvm/lapic.h
index 0b9bbadd1f3c..5a9f29ed9a4b 100644
--- a/arch/x86/kvm/lapic.h
+++ b/arch/x86/kvm/lapic.h
@@ -10,8 +10,9 @@
#define KVM_APIC_SIPI 1
#define KVM_APIC_LVT_NUM 6
-#define KVM_APIC_SHORT_MASK 0xc0000
-#define KVM_APIC_DEST_MASK 0x800
+#define APIC_SHORT_MASK 0xc0000
+#define APIC_DEST_NOSHORT 0x0
+#define APIC_DEST_MASK 0x800
#define APIC_BUS_CYCLE_NS 1
#define APIC_BUS_FREQUENCY (1000000000ULL / APIC_BUS_CYCLE_NS)
diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 362e874297e4..65a27a7e9cb1 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -4519,9 +4519,9 @@ static int avic_incomplete_ipi_interception(struct vcpu_svm *svm)
*/
kvm_for_each_vcpu(i, vcpu, kvm) {
bool m = kvm_apic_match_dest(vcpu, apic,
- icrl & KVM_APIC_SHORT_MASK,
+ icrl & APIC_SHORT_MASK,
GET_APIC_DEST_FIELD(icrh),
- icrl & KVM_APIC_DEST_MASK);
+ icrl & APIC_DEST_MASK);
if (m && !avic_vcpu_is_running(vcpu))
kvm_vcpu_wake_up(vcpu);
--
2.21.0
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 5/6] KVM: X86: Fix callers of kvm_apic_match_dest() to use correct macros
2019-12-03 16:58 [PATCH v4 0/6] KVM: X86: Cleanups on dest_mode and headers Peter Xu
` (3 preceding siblings ...)
2019-12-03 16:59 ` [PATCH v4 4/6] KVM: X86: Drop KVM_APIC_SHORT_MASK and KVM_APIC_DEST_MASK Peter Xu
@ 2019-12-03 16:59 ` Peter Xu
2019-12-03 16:59 ` [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand = 0" to use macros Peter Xu
5 siblings, 0 replies; 13+ messages in thread
From: Peter Xu @ 2019-12-03 16:59 UTC (permalink / raw)
To: linux-kernel, kvm
Cc: Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson, peterx,
Vitaly Kuznetsov
Callers of kvm_apic_match_dest() should always pass in APIC_DEST_*
macros for either dest_mode and short_hand parameters. Fix up all the
callers of kvm_apic_match_dest() that are not following the rule.
Reported-by: Sean Christopherson <sean.j.christopherson@intel.com>
Reported-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/x86/kvm/ioapic.c | 11 +++++++----
arch/x86/kvm/irq_comm.c | 3 ++-
2 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index e623a4f8d27e..f53daeaaeb37 100644
--- a/arch/x86/kvm/ioapic.c
+++ b/arch/x86/kvm/ioapic.c
@@ -108,8 +108,9 @@ static void __rtc_irq_eoi_tracking_restore_one(struct kvm_vcpu *vcpu)
union kvm_ioapic_redirect_entry *e;
e = &ioapic->redirtbl[RTC_GSI];
- if (!kvm_apic_match_dest(vcpu, NULL, 0, e->fields.dest_id,
- e->fields.dest_mode))
+ if (!kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
+ e->fields.dest_id,
+ kvm_lapic_irq_dest_mode(!!e->fields.dest_mode)))
return;
new_val = kvm_apic_pending_eoi(vcpu, e->fields.vector);
@@ -250,8 +251,10 @@ void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, ulong *ioapic_handled_vectors)
if (e->fields.trig_mode == IOAPIC_LEVEL_TRIG ||
kvm_irq_has_notifier(ioapic->kvm, KVM_IRQCHIP_IOAPIC, index) ||
index == RTC_GSI) {
- if (kvm_apic_match_dest(vcpu, NULL, 0,
- e->fields.dest_id, e->fields.dest_mode) ||
+ u16 dm = kvm_lapic_irq_dest_mode(!!e->fields.dest_mode);
+
+ if (kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
+ e->fields.dest_id, dm) ||
kvm_apic_pending_eoi(vcpu, e->fields.vector))
__set_bit(e->fields.vector,
ioapic_handled_vectors);
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 22108ed66a76..7d083f71fc8e 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -417,7 +417,8 @@ void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu,
kvm_set_msi_irq(vcpu->kvm, entry, &irq);
- if (irq.level && kvm_apic_match_dest(vcpu, NULL, 0,
+ if (irq.level &&
+ kvm_apic_match_dest(vcpu, NULL, APIC_DEST_NOSHORT,
irq.dest_id, irq.dest_mode))
__set_bit(irq.vector, ioapic_handled_vectors);
}
--
2.21.0
^ permalink raw reply related [flat|nested] 13+ messages in thread* [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand = 0" to use macros
2019-12-03 16:58 [PATCH v4 0/6] KVM: X86: Cleanups on dest_mode and headers Peter Xu
` (4 preceding siblings ...)
2019-12-03 16:59 ` [PATCH v4 5/6] KVM: X86: Fix callers of kvm_apic_match_dest() to use correct macros Peter Xu
@ 2019-12-03 16:59 ` Peter Xu
2019-12-04 16:12 ` Vitaly Kuznetsov
5 siblings, 1 reply; 13+ messages in thread
From: Peter Xu @ 2019-12-03 16:59 UTC (permalink / raw)
To: linux-kernel, kvm
Cc: Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson, peterx,
Vitaly Kuznetsov
Change the last users of "shorthand = 0" to use APIC_DEST_NOSHORT.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
arch/x86/kvm/ioapic.c | 4 ++--
arch/x86/kvm/irq_comm.c | 2 +-
arch/x86/kvm/x86.c | 2 +-
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
index f53daeaaeb37..77538fd77dc2 100644
--- a/arch/x86/kvm/ioapic.c
+++ b/arch/x86/kvm/ioapic.c
@@ -330,7 +330,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
if (e->fields.delivery_mode == APIC_DM_FIXED) {
struct kvm_lapic_irq irq;
- irq.shorthand = 0;
+ irq.shorthand = APIC_DEST_NOSHORT;
irq.vector = e->fields.vector;
irq.delivery_mode = e->fields.delivery_mode << 8;
irq.dest_id = e->fields.dest_id;
@@ -379,7 +379,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
irqe.trig_mode = entry->fields.trig_mode;
irqe.delivery_mode = entry->fields.delivery_mode << 8;
irqe.level = 1;
- irqe.shorthand = 0;
+ irqe.shorthand = APIC_DEST_NOSHORT;
irqe.msi_redir_hint = false;
if (irqe.trig_mode == IOAPIC_EDGE_TRIG)
diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
index 7d083f71fc8e..9d711c2451c7 100644
--- a/arch/x86/kvm/irq_comm.c
+++ b/arch/x86/kvm/irq_comm.c
@@ -121,7 +121,7 @@ void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
irq->msi_redir_hint = ((e->msi.address_lo
& MSI_ADDR_REDIRECTION_LOWPRI) > 0);
irq->level = 1;
- irq->shorthand = 0;
+ irq->shorthand = APIC_DEST_NOSHORT;
}
EXPORT_SYMBOL_GPL(kvm_set_msi_irq);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 3b00d662dc14..f6d778436e15 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -7355,7 +7355,7 @@ static void kvm_pv_kick_cpu_op(struct kvm *kvm, unsigned long flags, int apicid)
{
struct kvm_lapic_irq lapic_irq;
- lapic_irq.shorthand = 0;
+ lapic_irq.shorthand = APIC_DEST_NOSHORT;
lapic_irq.dest_mode = APIC_DEST_PHYSICAL;
lapic_irq.level = 0;
lapic_irq.dest_id = apicid;
--
2.21.0
^ permalink raw reply related [flat|nested] 13+ messages in thread* Re: [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand = 0" to use macros
2019-12-03 16:59 ` [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand = 0" to use macros Peter Xu
@ 2019-12-04 16:12 ` Vitaly Kuznetsov
2019-12-04 18:53 ` Peter Xu
0 siblings, 1 reply; 13+ messages in thread
From: Vitaly Kuznetsov @ 2019-12-04 16:12 UTC (permalink / raw)
To: Peter Xu, kvm
Cc: Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson, linux-kernel
Peter Xu <peterx@redhat.com> writes:
> Change the last users of "shorthand = 0" to use APIC_DEST_NOSHORT.
>
> Signed-off-by: Peter Xu <peterx@redhat.com>
> ---
> arch/x86/kvm/ioapic.c | 4 ++--
> arch/x86/kvm/irq_comm.c | 2 +-
> arch/x86/kvm/x86.c | 2 +-
> 3 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
> index f53daeaaeb37..77538fd77dc2 100644
> --- a/arch/x86/kvm/ioapic.c
> +++ b/arch/x86/kvm/ioapic.c
> @@ -330,7 +330,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
> if (e->fields.delivery_mode == APIC_DM_FIXED) {
> struct kvm_lapic_irq irq;
>
> - irq.shorthand = 0;
> + irq.shorthand = APIC_DEST_NOSHORT;
> irq.vector = e->fields.vector;
> irq.delivery_mode = e->fields.delivery_mode << 8;
> irq.dest_id = e->fields.dest_id;
> @@ -379,7 +379,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
> irqe.trig_mode = entry->fields.trig_mode;
> irqe.delivery_mode = entry->fields.delivery_mode << 8;
> irqe.level = 1;
> - irqe.shorthand = 0;
> + irqe.shorthand = APIC_DEST_NOSHORT;
> irqe.msi_redir_hint = false;
>
> if (irqe.trig_mode == IOAPIC_EDGE_TRIG)
> diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
> index 7d083f71fc8e..9d711c2451c7 100644
> --- a/arch/x86/kvm/irq_comm.c
> +++ b/arch/x86/kvm/irq_comm.c
> @@ -121,7 +121,7 @@ void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
> irq->msi_redir_hint = ((e->msi.address_lo
> & MSI_ADDR_REDIRECTION_LOWPRI) > 0);
> irq->level = 1;
> - irq->shorthand = 0;
> + irq->shorthand = APIC_DEST_NOSHORT;
> }
> EXPORT_SYMBOL_GPL(kvm_set_msi_irq);
>
> diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> index 3b00d662dc14..f6d778436e15 100644
> --- a/arch/x86/kvm/x86.c
> +++ b/arch/x86/kvm/x86.c
> @@ -7355,7 +7355,7 @@ static void kvm_pv_kick_cpu_op(struct kvm *kvm, unsigned long flags, int apicid)
> {
> struct kvm_lapic_irq lapic_irq;
>
> - lapic_irq.shorthand = 0;
> + lapic_irq.shorthand = APIC_DEST_NOSHORT;
> lapic_irq.dest_mode = APIC_DEST_PHYSICAL;
> lapic_irq.level = 0;
> lapic_irq.dest_id = apicid;
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
And, while on it, and if you're not yet tired I just noticed that
kvm_apic_match_dest()'s parameter is called 'short_hand' while
everywhere else we use 'shorthand'. Value the consistency we should :-)
--
Vitaly
^ permalink raw reply [flat|nested] 13+ messages in thread* Re: [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand = 0" to use macros
2019-12-04 16:12 ` Vitaly Kuznetsov
@ 2019-12-04 18:53 ` Peter Xu
0 siblings, 0 replies; 13+ messages in thread
From: Peter Xu @ 2019-12-04 18:53 UTC (permalink / raw)
To: Vitaly Kuznetsov
Cc: kvm, Nitesh Narayan Lal, Paolo Bonzini, Sean Christopherson,
linux-kernel
On Wed, Dec 04, 2019 at 05:12:43PM +0100, Vitaly Kuznetsov wrote:
> Peter Xu <peterx@redhat.com> writes:
>
> > Change the last users of "shorthand = 0" to use APIC_DEST_NOSHORT.
> >
> > Signed-off-by: Peter Xu <peterx@redhat.com>
> > ---
> > arch/x86/kvm/ioapic.c | 4 ++--
> > arch/x86/kvm/irq_comm.c | 2 +-
> > arch/x86/kvm/x86.c | 2 +-
> > 3 files changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
> > index f53daeaaeb37..77538fd77dc2 100644
> > --- a/arch/x86/kvm/ioapic.c
> > +++ b/arch/x86/kvm/ioapic.c
> > @@ -330,7 +330,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
> > if (e->fields.delivery_mode == APIC_DM_FIXED) {
> > struct kvm_lapic_irq irq;
> >
> > - irq.shorthand = 0;
> > + irq.shorthand = APIC_DEST_NOSHORT;
> > irq.vector = e->fields.vector;
> > irq.delivery_mode = e->fields.delivery_mode << 8;
> > irq.dest_id = e->fields.dest_id;
> > @@ -379,7 +379,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
> > irqe.trig_mode = entry->fields.trig_mode;
> > irqe.delivery_mode = entry->fields.delivery_mode << 8;
> > irqe.level = 1;
> > - irqe.shorthand = 0;
> > + irqe.shorthand = APIC_DEST_NOSHORT;
> > irqe.msi_redir_hint = false;
> >
> > if (irqe.trig_mode == IOAPIC_EDGE_TRIG)
> > diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
> > index 7d083f71fc8e..9d711c2451c7 100644
> > --- a/arch/x86/kvm/irq_comm.c
> > +++ b/arch/x86/kvm/irq_comm.c
> > @@ -121,7 +121,7 @@ void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
> > irq->msi_redir_hint = ((e->msi.address_lo
> > & MSI_ADDR_REDIRECTION_LOWPRI) > 0);
> > irq->level = 1;
> > - irq->shorthand = 0;
> > + irq->shorthand = APIC_DEST_NOSHORT;
> > }
> > EXPORT_SYMBOL_GPL(kvm_set_msi_irq);
> >
> > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> > index 3b00d662dc14..f6d778436e15 100644
> > --- a/arch/x86/kvm/x86.c
> > +++ b/arch/x86/kvm/x86.c
> > @@ -7355,7 +7355,7 @@ static void kvm_pv_kick_cpu_op(struct kvm *kvm, unsigned long flags, int apicid)
> > {
> > struct kvm_lapic_irq lapic_irq;
> >
> > - lapic_irq.shorthand = 0;
> > + lapic_irq.shorthand = APIC_DEST_NOSHORT;
> > lapic_irq.dest_mode = APIC_DEST_PHYSICAL;
> > lapic_irq.level = 0;
> > lapic_irq.dest_id = apicid;
>
> Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
>
> And, while on it, and if you're not yet tired I just noticed that
> kvm_apic_match_dest()'s parameter is called 'short_hand' while
> everywhere else we use 'shorthand'. Value the consistency we should :-)
I'll aquash your suggested change into previous patch ("KVM: X86: Fix
callers of kvm_apic_match_dest() to use correct macros") and keep your
r-b for that, otherwise I'm afraid the change could be too trivial to
stand as itself..
Thanks,
--
Peter Xu
^ permalink raw reply [flat|nested] 13+ messages in thread