* [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts
@ 2013-04-15 12:05 Paolo Bonzini
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method Paolo Bonzini
` (2 more replies)
0 siblings, 3 replies; 8+ messages in thread
From: Paolo Bonzini @ 2013-04-15 12:05 UTC (permalink / raw)
To: qemu-devel; +Cc: gnatapov, agraf
These patches finally implement INIT entirely in userspace. The problem
here was that the CPU was being reset after kvm_arch_reset_vcpu is called.
This made it harder to hook into the reset process and put APs into
KVM_MP_STATE_INIT_RECEIVED state (instead of KVM_MP_STATE_UNINITIALIZED
which is the state after a system reset).
In this series, patch 1 removes the kvm_arch_reset_vcpu from the generic
code, and moves it into each architecture's CPU reset callback (half of
our supported architectures do not need the callback anyway).
With this in place, patch 2 can add a similar x86-specific callback that
is used after an INIT reset. Apart from this callback, the code for
INITs is shared entirely between the userspace irqchip and in-kernel
irqchip cases.
v2->v3: add stub kvm_arch_reset_vcpu for s390
Paolo Bonzini (2):
kvm: reset state from the CPU's reset method
kvm: forward INIT signals coming from the chipset
include/sysemu/kvm.h | 2 --
kvm-all.c | 11 -----------
target-arm/kvm.c | 4 ----
target-i386/cpu.c | 5 +++++
target-i386/helper.c | 4 ++++
target-i386/kvm.c | 37 ++++++++++++++++++++++++++-----------
target-i386/kvm_i386.h | 2 ++
target-ppc/kvm.c | 4 ----
target-s390x/cpu.c | 4 ++++
target-s390x/cpu.h | 5 +++++
10 files changed, 46 insertions(+), 32 deletions(-)
--
1.8.1.4
^ permalink raw reply [flat|nested] 8+ messages in thread
* [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method
2013-04-15 12:05 [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts Paolo Bonzini
@ 2013-04-15 12:05 ` Paolo Bonzini
2013-04-15 12:20 ` Andreas Färber
2013-04-18 5:37 ` Gleb Natapov
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 2/2] kvm: forward INIT signals coming from the chipset Paolo Bonzini
2013-04-18 7:54 ` [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts Gleb Natapov
2 siblings, 2 replies; 8+ messages in thread
From: Paolo Bonzini @ 2013-04-15 12:05 UTC (permalink / raw)
To: qemu-devel; +Cc: gnatapov, agraf
Now that we have a CPU object with a reset method, it is better to
keep the KVM reset close to the CPU reset. Using qemu_register_reset
as we do now keeps them far apart.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
v2->v3: add stub kvm_arch_reset_vcpu for s390
include/sysemu/kvm.h | 2 --
kvm-all.c | 11 -----------
target-arm/kvm.c | 4 ----
target-i386/cpu.c | 5 +++++
target-i386/kvm_i386.h | 1 +
target-ppc/kvm.c | 4 ----
target-s390x/cpu.c | 4 ++++
target-s390x/cpu.h | 5 +++++
8 files changed, 15 insertions(+), 21 deletions(-)
diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
index f2d97b5..50072c5 100644
--- a/include/sysemu/kvm.h
+++ b/include/sysemu/kvm.h
@@ -199,8 +199,6 @@ int kvm_arch_init_vcpu(CPUState *cpu);
/* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */
unsigned long kvm_arch_vcpu_id(CPUState *cpu);
-void kvm_arch_reset_vcpu(CPUState *cpu);
-
int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
int kvm_arch_on_sigbus(int code, void *addr);
diff --git a/kvm-all.c b/kvm-all.c
index 9b433d3..57616ef 100644
--- a/kvm-all.c
+++ b/kvm-all.c
@@ -207,13 +207,6 @@ static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot)
return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
}
-static void kvm_reset_vcpu(void *opaque)
-{
- CPUState *cpu = opaque;
-
- kvm_arch_reset_vcpu(cpu);
-}
-
int kvm_init_vcpu(CPUState *cpu)
{
KVMState *s = kvm_state;
@@ -253,10 +246,6 @@ int kvm_init_vcpu(CPUState *cpu)
}
ret = kvm_arch_init_vcpu(cpu);
- if (ret == 0) {
- qemu_register_reset(kvm_reset_vcpu, cpu);
- kvm_arch_reset_vcpu(cpu);
- }
err:
return ret;
}
diff --git a/target-arm/kvm.c b/target-arm/kvm.c
index 6bfb103..f45a63d 100644
--- a/target-arm/kvm.c
+++ b/target-arm/kvm.c
@@ -430,10 +430,6 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
return 0;
}
-void kvm_arch_reset_vcpu(CPUState *cs)
-{
-}
-
bool kvm_arch_stop_on_emulation_error(CPUState *cs)
{
return true;
diff --git a/target-i386/cpu.c b/target-i386/cpu.c
index 6dd993f..1754225 100644
--- a/target-i386/cpu.c
+++ b/target-i386/cpu.c
@@ -24,6 +24,7 @@
#include "cpu.h"
#include "sysemu/kvm.h"
#include "sysemu/cpus.h"
+#include "kvm_i386.h"
#include "topology.h"
#include "qemu/option.h"
@@ -2015,6 +2016,10 @@ static void x86_cpu_reset(CPUState *s)
}
s->halted = !cpu_is_bsp(cpu);
+
+ if (kvm_enabled()) {
+ kvm_arch_reset_vcpu(s);
+ }
#endif
}
diff --git a/target-i386/kvm_i386.h b/target-i386/kvm_i386.h
index 4392ab4..3accc2d 100644
--- a/target-i386/kvm_i386.h
+++ b/target-i386/kvm_i386.h
@@ -14,6 +14,7 @@
#include "sysemu/kvm.h"
bool kvm_allows_irq0_override(void);
+void kvm_arch_reset_vcpu(CPUState *cs);
int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr,
uint32_t flags, uint32_t *dev_id);
diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
index 5e9dddb..1e8b01d 100644
--- a/target-ppc/kvm.c
+++ b/target-ppc/kvm.c
@@ -425,10 +425,6 @@ int kvm_arch_init_vcpu(CPUState *cs)
return ret;
}
-void kvm_arch_reset_vcpu(CPUState *cpu)
-{
-}
-
static void kvm_sw_tlb_put(PowerPCCPU *cpu)
{
CPUPPCState *env = &cpu->env;
diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
index 23fe51f..6321384 100644
--- a/target-s390x/cpu.c
+++ b/target-s390x/cpu.c
@@ -84,6 +84,10 @@ static void s390_cpu_reset(CPUState *s)
* after incrementing the cpu counter */
#if !defined(CONFIG_USER_ONLY)
s->halted = 1;
+
+ if (kvm_enabled()) {
+ kvm_arch_reset_vcpu(s);
+ }
#endif
tlb_flush(env, 1);
}
diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
index e351005..cc51de5 100644
--- a/target-s390x/cpu.h
+++ b/target-s390x/cpu.h
@@ -352,11 +352,16 @@ void s390x_cpu_timer(void *opaque);
int s390_virtio_hypercall(CPUS390XState *env);
#ifdef CONFIG_KVM
+void kvm_arch_reset_vcpu(CPUState *cs);
void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code);
void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token);
void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm,
uint64_t parm64, int vm);
#else
+static inline void kvm_arch_reset_vcpu(CPUState *cs)
+{
+}
+
static inline void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code)
{
}
--
1.8.1.4
^ permalink raw reply related [flat|nested] 8+ messages in thread
* [Qemu-devel] [PATCH uq/master v3 2/2] kvm: forward INIT signals coming from the chipset
2013-04-15 12:05 [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts Paolo Bonzini
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method Paolo Bonzini
@ 2013-04-15 12:05 ` Paolo Bonzini
2013-04-18 7:54 ` [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts Gleb Natapov
2 siblings, 0 replies; 8+ messages in thread
From: Paolo Bonzini @ 2013-04-15 12:05 UTC (permalink / raw)
To: qemu-devel; +Cc: gnatapov, agraf
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
target-i386/helper.c | 4 ++++
target-i386/kvm.c | 37 ++++++++++++++++++++++++++-----------
target-i386/kvm_i386.h | 1 +
3 files changed, 31 insertions(+), 11 deletions(-)
diff --git a/target-i386/helper.c b/target-i386/helper.c
index 282494f..c01d8eb 100644
--- a/target-i386/helper.c
+++ b/target-i386/helper.c
@@ -19,6 +19,7 @@
#include "cpu.h"
#include "sysemu/kvm.h"
+#include "kvm_i386.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/sysemu.h"
#include "monitor/monitor.h"
@@ -1290,6 +1291,9 @@ void do_cpu_init(X86CPU *cpu)
cpu_reset(cs);
cs->interrupt_request = sipi;
env->pat = pat;
+ if (kvm_enabled()) {
+ kvm_arch_do_init_vcpu(cs);
+ }
apic_init_reset(env->apic_state);
}
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 397afeb..f37b87d 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -30,6 +30,8 @@
#include "qemu/config-file.h"
#include "hw/i386/pc.h"
#include "hw/i386/apic.h"
+#include "hw/i386/apic_internal.h"
+#include "hw/i386/apic-msidef.h"
#include "exec/ioport.h"
#include "hyperv.h"
#include "hw/pci/pci.h"
@@ -676,6 +678,17 @@ void kvm_arch_reset_vcpu(CPUState *cs)
}
}
+void kvm_arch_do_init_vcpu(CPUState *cs)
+{
+ X86CPU *cpu = X86_CPU(cs);
+ CPUX86State *env = &cpu->env;
+
+ /* APs get directly into wait-for-SIPI state. */
+ if (env->mp_state == KVM_MP_STATE_UNINITIALIZED) {
+ env->mp_state = KVM_MP_STATE_INIT_RECEIVED;
+ }
+}
+
static int kvm_get_supported_msrs(KVMState *s)
{
static int kvm_supported_msrs;
@@ -1773,14 +1786,15 @@ void kvm_arch_pre_run(CPUState *cpu, struct kvm_run *run)
}
}
- if (!kvm_irqchip_in_kernel()) {
- /* Force the VCPU out of its inner loop to process any INIT requests
- * or pending TPR access reports. */
- if (cpu->interrupt_request &
- (CPU_INTERRUPT_INIT | CPU_INTERRUPT_TPR)) {
- cpu->exit_request = 1;
- }
+ /* Force the VCPU out of its inner loop to process any INIT requests
+ * or (for userspace APIC, but it is cheap to combine the checks here)
+ * pending TPR access reports.
+ */
+ if (cpu->interrupt_request & (CPU_INTERRUPT_INIT | CPU_INTERRUPT_TPR)) {
+ cpu->exit_request = 1;
+ }
+ if (!kvm_irqchip_in_kernel()) {
/* Try to inject an interrupt if the guest can accept it */
if (run->ready_for_interrupt_injection &&
(cpu->interrupt_request & CPU_INTERRUPT_HARD) &&
@@ -1860,6 +1874,11 @@ int kvm_arch_process_async_events(CPUState *cs)
}
}
+ if (cs->interrupt_request & CPU_INTERRUPT_INIT) {
+ kvm_cpu_synchronize_state(env);
+ do_cpu_init(cpu);
+ }
+
if (kvm_irqchip_in_kernel()) {
return 0;
}
@@ -1873,10 +1892,6 @@ int kvm_arch_process_async_events(CPUState *cs)
(cs->interrupt_request & CPU_INTERRUPT_NMI)) {
cs->halted = 0;
}
- if (cs->interrupt_request & CPU_INTERRUPT_INIT) {
- kvm_cpu_synchronize_state(env);
- do_cpu_init(cpu);
- }
if (cs->interrupt_request & CPU_INTERRUPT_SIPI) {
kvm_cpu_synchronize_state(env);
do_cpu_sipi(cpu);
diff --git a/target-i386/kvm_i386.h b/target-i386/kvm_i386.h
index 3accc2d..ce38ee6 100644
--- a/target-i386/kvm_i386.h
+++ b/target-i386/kvm_i386.h
@@ -15,6 +15,7 @@
bool kvm_allows_irq0_override(void);
void kvm_arch_reset_vcpu(CPUState *cs);
+void kvm_arch_do_init_vcpu(CPUState *cs);
int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr,
uint32_t flags, uint32_t *dev_id);
--
1.8.1.4
^ permalink raw reply related [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method Paolo Bonzini
@ 2013-04-15 12:20 ` Andreas Färber
2013-04-15 12:55 ` Paolo Bonzini
2013-04-18 5:37 ` Gleb Natapov
1 sibling, 1 reply; 8+ messages in thread
From: Andreas Färber @ 2013-04-15 12:20 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: gnatapov, qemu-devel, agraf
Am 15.04.2013 14:05, schrieb Paolo Bonzini:
> Now that we have a CPU object with a reset method, it is better to
> keep the KVM reset close to the CPU reset. Using qemu_register_reset
> as we do now keeps them far apart.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> v2->v3: add stub kvm_arch_reset_vcpu for s390
>
> include/sysemu/kvm.h | 2 --
> kvm-all.c | 11 -----------
> target-arm/kvm.c | 4 ----
> target-i386/cpu.c | 5 +++++
> target-i386/kvm_i386.h | 1 +
> target-ppc/kvm.c | 4 ----
> target-s390x/cpu.c | 4 ++++
> target-s390x/cpu.h | 5 +++++
> 8 files changed, 15 insertions(+), 21 deletions(-)
Fine with me.
Have you tested whether i386 needs a similar stub on non-x86? If so then
Reviewed-by: Andreas Färber <afaerber@suse.de>
For anyone else wondering, arm and ppc are no longer calling the
kvm_arch_ function, so it can get removed there, while i386 and s390x
call it from X86CPU/S390CPU reset handler now. Would be more clear if
the commit message was more verbose ;) and would be nice to clean this
up as follow-up by renaming to kvm_x86_... and kvm_s390_... or so
respectively.
Andreas
--
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg, Germany
GF: Jeff Hawn, Jennifer Guild, Felix Imendörffer; HRB 16746 AG Nürnberg
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method
2013-04-15 12:20 ` Andreas Färber
@ 2013-04-15 12:55 ` Paolo Bonzini
0 siblings, 0 replies; 8+ messages in thread
From: Paolo Bonzini @ 2013-04-15 12:55 UTC (permalink / raw)
To: Andreas Färber; +Cc: gnatapov, qemu-devel, agraf
Il 15/04/2013 14:20, Andreas Färber ha scritto:
> Fine with me.
>
> Have you tested whether i386 needs a similar stub on non-x86? If so then
>
> Reviewed-by: Andreas Färber <afaerber@suse.de>
It doesn't need it, because the prototype is declared always in kvm_i386.h.
I didn't test non-x86, but I tested an alternative patches that places
s390's kvm_arch_reset_vcpu prototype outside "#ifdef CONFIG_KVM". That
also compiled fine on non-s390, and it's what will happen when compiling
on non-x86.
I figured that the dummy inline definition was closer in style to the
existing s390 code, so that's what I chose for submission.
Paolo
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method Paolo Bonzini
2013-04-15 12:20 ` Andreas Färber
@ 2013-04-18 5:37 ` Gleb Natapov
2013-04-18 7:37 ` Paolo Bonzini
1 sibling, 1 reply; 8+ messages in thread
From: Gleb Natapov @ 2013-04-18 5:37 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: qemu-devel, agraf
On Mon, Apr 15, 2013 at 02:05:31PM +0200, Paolo Bonzini wrote:
> Now that we have a CPU object with a reset method, it is better to
> keep the KVM reset close to the CPU reset. Using qemu_register_reset
> as we do now keeps them far apart.
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
> v2->v3: add stub kvm_arch_reset_vcpu for s390
>
> include/sysemu/kvm.h | 2 --
> kvm-all.c | 11 -----------
> target-arm/kvm.c | 4 ----
> target-i386/cpu.c | 5 +++++
> target-i386/kvm_i386.h | 1 +
> target-ppc/kvm.c | 4 ----
> target-s390x/cpu.c | 4 ++++
> target-s390x/cpu.h | 5 +++++
> 8 files changed, 15 insertions(+), 21 deletions(-)
>
> diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h
> index f2d97b5..50072c5 100644
> --- a/include/sysemu/kvm.h
> +++ b/include/sysemu/kvm.h
> @@ -199,8 +199,6 @@ int kvm_arch_init_vcpu(CPUState *cpu);
> /* Returns VCPU ID to be used on KVM_CREATE_VCPU ioctl() */
> unsigned long kvm_arch_vcpu_id(CPUState *cpu);
>
> -void kvm_arch_reset_vcpu(CPUState *cpu);
> -
> int kvm_arch_on_sigbus_vcpu(CPUState *cpu, int code, void *addr);
> int kvm_arch_on_sigbus(int code, void *addr);
>
> diff --git a/kvm-all.c b/kvm-all.c
> index 9b433d3..57616ef 100644
> --- a/kvm-all.c
> +++ b/kvm-all.c
> @@ -207,13 +207,6 @@ static int kvm_set_user_memory_region(KVMState *s, KVMSlot *slot)
> return kvm_vm_ioctl(s, KVM_SET_USER_MEMORY_REGION, &mem);
> }
>
> -static void kvm_reset_vcpu(void *opaque)
> -{
> - CPUState *cpu = opaque;
> -
> - kvm_arch_reset_vcpu(cpu);
> -}
> -
> int kvm_init_vcpu(CPUState *cpu)
> {
> KVMState *s = kvm_state;
> @@ -253,10 +246,6 @@ int kvm_init_vcpu(CPUState *cpu)
> }
>
> ret = kvm_arch_init_vcpu(cpu);
> - if (ret == 0) {
> - qemu_register_reset(kvm_reset_vcpu, cpu);
> - kvm_arch_reset_vcpu(cpu);
> - }
> err:
> return ret;
> }
> diff --git a/target-arm/kvm.c b/target-arm/kvm.c
> index 6bfb103..f45a63d 100644
> --- a/target-arm/kvm.c
> +++ b/target-arm/kvm.c
> @@ -430,10 +430,6 @@ int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
> return 0;
> }
>
> -void kvm_arch_reset_vcpu(CPUState *cs)
> -{
> -}
> -
> bool kvm_arch_stop_on_emulation_error(CPUState *cs)
> {
> return true;
> diff --git a/target-i386/cpu.c b/target-i386/cpu.c
> index 6dd993f..1754225 100644
> --- a/target-i386/cpu.c
> +++ b/target-i386/cpu.c
> @@ -24,6 +24,7 @@
> #include "cpu.h"
> #include "sysemu/kvm.h"
> #include "sysemu/cpus.h"
> +#include "kvm_i386.h"
> #include "topology.h"
>
> #include "qemu/option.h"
> @@ -2015,6 +2016,10 @@ static void x86_cpu_reset(CPUState *s)
> }
>
> s->halted = !cpu_is_bsp(cpu);
> +
> + if (kvm_enabled()) {
> + kvm_arch_reset_vcpu(s);
> + }
> #endif
> }
>
> diff --git a/target-i386/kvm_i386.h b/target-i386/kvm_i386.h
> index 4392ab4..3accc2d 100644
> --- a/target-i386/kvm_i386.h
> +++ b/target-i386/kvm_i386.h
> @@ -14,6 +14,7 @@
> #include "sysemu/kvm.h"
>
> bool kvm_allows_irq0_override(void);
> +void kvm_arch_reset_vcpu(CPUState *cs);
>
> int kvm_device_pci_assign(KVMState *s, PCIHostDeviceAddress *dev_addr,
> uint32_t flags, uint32_t *dev_id);
> diff --git a/target-ppc/kvm.c b/target-ppc/kvm.c
> index 5e9dddb..1e8b01d 100644
> --- a/target-ppc/kvm.c
> +++ b/target-ppc/kvm.c
> @@ -425,10 +425,6 @@ int kvm_arch_init_vcpu(CPUState *cs)
> return ret;
> }
>
> -void kvm_arch_reset_vcpu(CPUState *cpu)
> -{
> -}
> -
> static void kvm_sw_tlb_put(PowerPCCPU *cpu)
> {
> CPUPPCState *env = &cpu->env;
> diff --git a/target-s390x/cpu.c b/target-s390x/cpu.c
> index 23fe51f..6321384 100644
> --- a/target-s390x/cpu.c
> +++ b/target-s390x/cpu.c
> @@ -84,6 +84,10 @@ static void s390_cpu_reset(CPUState *s)
> * after incrementing the cpu counter */
> #if !defined(CONFIG_USER_ONLY)
> s->halted = 1;
> +
> + if (kvm_enabled()) {
> + kvm_arch_reset_vcpu(s);
> + }
> #endif
> tlb_flush(env, 1);
> }
> diff --git a/target-s390x/cpu.h b/target-s390x/cpu.h
> index e351005..cc51de5 100644
> --- a/target-s390x/cpu.h
> +++ b/target-s390x/cpu.h
> @@ -352,11 +352,16 @@ void s390x_cpu_timer(void *opaque);
> int s390_virtio_hypercall(CPUS390XState *env);
>
> #ifdef CONFIG_KVM
> +void kvm_arch_reset_vcpu(CPUState *cs);
> void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code);
> void kvm_s390_virtio_irq(S390CPU *cpu, int config_change, uint64_t token);
> void kvm_s390_interrupt_internal(S390CPU *cpu, int type, uint32_t parm,
> uint64_t parm64, int vm);
> #else
> +static inline void kvm_arch_reset_vcpu(CPUState *cs)
> +{
> +}
> +
You added stub to s390, but not to x86. It will compile either way with
current enough gcc, but I wonder why the inconsistency?
> static inline void kvm_s390_interrupt(S390CPU *cpu, int type, uint32_t code)
> {
> }
> --
> 1.8.1.4
>
--
Gleb.
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method
2013-04-18 5:37 ` Gleb Natapov
@ 2013-04-18 7:37 ` Paolo Bonzini
0 siblings, 0 replies; 8+ messages in thread
From: Paolo Bonzini @ 2013-04-18 7:37 UTC (permalink / raw)
To: Gleb Natapov; +Cc: qemu-devel, agraf
Il 18/04/2013 07:37, Gleb Natapov ha scritto:
>> > +static inline void kvm_arch_reset_vcpu(CPUState *cs)
>> > +{
>> > +}
>> > +
> You added stub to s390, but not to x86. It will compile either way with
> current enough gcc, but I wonder why the inconsistency?
>
Because I kept it consistent within the file. s390 prefers stubs, x86
prefers no stubs.
Paolo
^ permalink raw reply [flat|nested] 8+ messages in thread
* Re: [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts
2013-04-15 12:05 [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts Paolo Bonzini
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method Paolo Bonzini
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 2/2] kvm: forward INIT signals coming from the chipset Paolo Bonzini
@ 2013-04-18 7:54 ` Gleb Natapov
2 siblings, 0 replies; 8+ messages in thread
From: Gleb Natapov @ 2013-04-18 7:54 UTC (permalink / raw)
To: Paolo Bonzini; +Cc: qemu-devel, agraf
On Mon, Apr 15, 2013 at 02:05:30PM +0200, Paolo Bonzini wrote:
> These patches finally implement INIT entirely in userspace. The problem
> here was that the CPU was being reset after kvm_arch_reset_vcpu is called.
> This made it harder to hook into the reset process and put APs into
> KVM_MP_STATE_INIT_RECEIVED state (instead of KVM_MP_STATE_UNINITIALIZED
> which is the state after a system reset).
>
> In this series, patch 1 removes the kvm_arch_reset_vcpu from the generic
> code, and moves it into each architecture's CPU reset callback (half of
> our supported architectures do not need the callback anyway).
>
> With this in place, patch 2 can add a similar x86-specific callback that
> is used after an INIT reset. Apart from this callback, the code for
> INITs is shared entirely between the userspace irqchip and in-kernel
> irqchip cases.
>
Reviewed-by: Gleb Natapov <gleb@redhat.com>
> v2->v3: add stub kvm_arch_reset_vcpu for s390
>
> Paolo Bonzini (2):
> kvm: reset state from the CPU's reset method
> kvm: forward INIT signals coming from the chipset
>
> include/sysemu/kvm.h | 2 --
> kvm-all.c | 11 -----------
> target-arm/kvm.c | 4 ----
> target-i386/cpu.c | 5 +++++
> target-i386/helper.c | 4 ++++
> target-i386/kvm.c | 37 ++++++++++++++++++++++++++-----------
> target-i386/kvm_i386.h | 2 ++
> target-ppc/kvm.c | 4 ----
> target-s390x/cpu.c | 4 ++++
> target-s390x/cpu.h | 5 +++++
> 10 files changed, 46 insertions(+), 32 deletions(-)
>
> --
> 1.8.1.4
--
Gleb.
^ permalink raw reply [flat|nested] 8+ messages in thread
end of thread, other threads:[~2013-04-18 7:54 UTC | newest]
Thread overview: 8+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-04-15 12:05 [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts Paolo Bonzini
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 1/2] kvm: reset state from the CPU's reset method Paolo Bonzini
2013-04-15 12:20 ` Andreas Färber
2013-04-15 12:55 ` Paolo Bonzini
2013-04-18 5:37 ` Gleb Natapov
2013-04-18 7:37 ` Paolo Bonzini
2013-04-15 12:05 ` [Qemu-devel] [PATCH uq/master v3 2/2] kvm: forward INIT signals coming from the chipset Paolo Bonzini
2013-04-18 7:54 ` [Qemu-devel] [PATCH uq/master v3 0/2] correctly reset the CPU on INIT interrupts Gleb Natapov
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