There is a newly introduced hrtimer_setup() which will replace
hrtimer_init(). This new function is similar to the old one, except that it
also sanity-checks and initializes the timer's callback function.
Switch to use this new function.
Patch was created by using Coccinelle.
Signed-off-by: Nam Cao <namcao@linutronix.de>
---
Cc: Sean Christopherson <seanjc@google.com>
---
arch/x86/kvm/hyperv.c | 3 +--
arch/x86/kvm/i8254.c | 3 +--
arch/x86/kvm/lapic.c | 5 ++---
arch/x86/kvm/vmx/nested.c | 5 ++---
arch/x86/kvm/xen.c | 5 ++---
5 files changed, 8 insertions(+), 13 deletions(-)
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index 4f0a94346d00..19ea425a7264 100644
--- a/arch/x86/kvm/hyperv.c
+++ b/arch/x86/kvm/hyperv.c
@@ -952,8 +952,7 @@ static void stimer_init(struct kvm_vcpu_hv_stimer *stimer, int timer_index)
{
memset(stimer, 0, sizeof(*stimer));
stimer->index = timer_index;
- hrtimer_init(&stimer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- stimer->timer.function = stimer_timer_callback;
+ hrtimer_setup(&stimer->timer, stimer_timer_callback, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
stimer_prepare_msg(stimer);
}
diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c
index cd57a517d04a..9342442e9650 100644
--- a/arch/x86/kvm/i8254.c
+++ b/arch/x86/kvm/i8254.c
@@ -690,8 +690,7 @@ struct kvm_pit *kvm_create_pit(struct kvm *kvm, u32 flags)
pit->kvm = kvm;
pit_state = &pit->pit_state;
- hrtimer_init(&pit_state->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
- pit_state->timer.function = pit_timer_fn;
+ hrtimer_setup(&pit_state->timer, pit_timer_fn, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
pit_state->irq_ack_notifier.gsi = 0;
pit_state->irq_ack_notifier.irq_acked = kvm_pit_ack_irq;
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 2098dc689088..1cfcd9125ffb 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2887,9 +2887,8 @@ int kvm_create_lapic(struct kvm_vcpu *vcpu)
apic->nr_lvt_entries = kvm_apic_calc_nr_lvt_entries(vcpu);
- hrtimer_init(&apic->lapic_timer.timer, CLOCK_MONOTONIC,
- HRTIMER_MODE_ABS_HARD);
- apic->lapic_timer.timer.function = apic_timer_fn;
+ hrtimer_setup(&apic->lapic_timer.timer, apic_timer_fn, CLOCK_MONOTONIC,
+ HRTIMER_MODE_ABS_HARD);
if (lapic_timer_advance)
apic->lapic_timer.timer_advance_ns = LAPIC_TIMER_ADVANCE_NS_INIT;
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index a8e7bc04d9bf..c8cdf2ef00aa 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -5279,9 +5279,8 @@ static int enter_vmx_operation(struct kvm_vcpu *vcpu)
if (enable_shadow_vmcs && !alloc_shadow_vmcs(vcpu))
goto out_shadow_vmcs;
- hrtimer_init(&vmx->nested.preemption_timer, CLOCK_MONOTONIC,
- HRTIMER_MODE_ABS_PINNED);
- vmx->nested.preemption_timer.function = vmx_preemption_timer_fn;
+ hrtimer_setup(&vmx->nested.preemption_timer, vmx_preemption_timer_fn, CLOCK_MONOTONIC,
+ HRTIMER_MODE_ABS_PINNED);
vmx->nested.vpid02 = allocate_vpid();
diff --git a/arch/x86/kvm/xen.c b/arch/x86/kvm/xen.c
index c386fbe6b58d..73e85b1ebb08 100644
--- a/arch/x86/kvm/xen.c
+++ b/arch/x86/kvm/xen.c
@@ -265,9 +265,8 @@ static void kvm_xen_stop_timer(struct kvm_vcpu *vcpu)
static void kvm_xen_init_timer(struct kvm_vcpu *vcpu)
{
- hrtimer_init(&vcpu->arch.xen.timer, CLOCK_MONOTONIC,
- HRTIMER_MODE_ABS_HARD);
- vcpu->arch.xen.timer.function = xen_timer_callback;
+ hrtimer_setup(&vcpu->arch.xen.timer, xen_timer_callback, CLOCK_MONOTONIC,
+ HRTIMER_MODE_ABS_HARD);
}
static void kvm_xen_update_runstate_guest(struct kvm_vcpu *v, bool atomic)
--
2.39.5Hi Nam,
kernel test robot noticed the following build errors:
[auto build test ERROR on kvm/queue]
[also build test ERROR on tip/sched/core perf-tools-next/perf-tools-next tip/perf/core perf-tools/perf-tools tip/timers/core axboe-block/for-next linus/master v6.12-rc5 next-20241028]
[cannot apply to kvm/linux-next acme/perf/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Nam-Cao/KVM-MIPS-Switch-to-use-hrtimer_setup/20241028-154142
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
patch link: https://lore.kernel.org/r/8774212e6c10c550743219e00738492eb379227c.1729864823.git.namcao%40linutronix.de
patch subject: [PATCH 04/31] KVM: x86: Switch to use hrtimer_setup()
config: x86_64-kexec (https://download.01.org/0day-ci/archive/20241029/202410290239.urBaNd5D-lkp@intel.com/config)
compiler: clang version 19.1.2 (https://github.com/llvm/llvm-project 7ba7d8e2f7b6445b60679da826210cdde29eaf8b)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241029/202410290239.urBaNd5D-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410290239.urBaNd5D-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/x86/kvm/lapic.c:20:
In file included from include/linux/kvm_host.h:16:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kvm/lapic.c:2878:2: error: call to undeclared function 'hrtimer_setup'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
2878 | hrtimer_setup(&apic->lapic_timer.timer, apic_timer_fn, CLOCK_MONOTONIC,
| ^
arch/x86/kvm/lapic.c:2878:2: note: did you mean 'hrtimer_start'?
include/linux/hrtimer.h:272:20: note: 'hrtimer_start' declared here
272 | static inline void hrtimer_start(struct hrtimer *timer, ktime_t tim,
| ^
4 warnings and 1 error generated.
--
In file included from arch/x86/kvm/i8254.c:35:
In file included from include/linux/kvm_host.h:16:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kvm/i8254.c:693:2: error: call to undeclared function 'hrtimer_setup'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
693 | hrtimer_setup(&pit_state->timer, pit_timer_fn, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
| ^
arch/x86/kvm/i8254.c:693:2: note: did you mean 'hrtimer_start'?
include/linux/hrtimer.h:272:20: note: 'hrtimer_start' declared here
272 | static inline void hrtimer_start(struct hrtimer *timer, ktime_t tim,
| ^
4 warnings and 1 error generated.
--
In file included from arch/x86/kvm/hyperv.c:22:
In file included from arch/x86/kvm/x86.h:5:
In file included from include/linux/kvm_host.h:16:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kvm/hyperv.c:955:2: error: call to undeclared function 'hrtimer_setup'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
955 | hrtimer_setup(&stimer->timer, stimer_timer_callback, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
| ^
arch/x86/kvm/hyperv.c:955:2: note: did you mean 'hrtimer_start'?
include/linux/hrtimer.h:272:20: note: 'hrtimer_start' declared here
272 | static inline void hrtimer_start(struct hrtimer *timer, ktime_t tim,
| ^
4 warnings and 1 error generated.
--
In file included from arch/x86/kvm/vmx/nested.c:8:
In file included from arch/x86/include/asm/mmu_context.h:8:
In file included from include/linux/pkeys.h:5:
In file included from include/linux/mm.h:2213:
include/linux/vmstat.h:504:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
504 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
505 | item];
| ~~~~
include/linux/vmstat.h:511:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
511 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
512 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
518 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
| ~~~~~~~~~~~ ^ ~~~
include/linux/vmstat.h:524:43: warning: arithmetic between different enumeration types ('enum zone_stat_item' and 'enum numa_stat_item') [-Wenum-enum-conversion]
524 | return vmstat_text[NR_VM_ZONE_STAT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~ ^
525 | NR_VM_NUMA_EVENT_ITEMS +
| ~~~~~~~~~~~~~~~~~~~~~~
>> arch/x86/kvm/vmx/nested.c:5278:2: error: call to undeclared function 'hrtimer_setup'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
5278 | hrtimer_setup(&vmx->nested.preemption_timer, vmx_preemption_timer_fn, CLOCK_MONOTONIC,
| ^
arch/x86/kvm/vmx/nested.c:5278:2: note: did you mean 'hrtimer_start'?
include/linux/hrtimer.h:272:20: note: 'hrtimer_start' declared here
272 | static inline void hrtimer_start(struct hrtimer *timer, ktime_t tim,
| ^
4 warnings and 1 error generated.
vim +/hrtimer_setup +2878 arch/x86/kvm/lapic.c
2847
2848 int kvm_create_lapic(struct kvm_vcpu *vcpu)
2849 {
2850 struct kvm_lapic *apic;
2851
2852 ASSERT(vcpu != NULL);
2853
2854 if (!irqchip_in_kernel(vcpu->kvm)) {
2855 static_branch_inc(&kvm_has_noapic_vcpu);
2856 return 0;
2857 }
2858
2859 apic = kzalloc(sizeof(*apic), GFP_KERNEL_ACCOUNT);
2860 if (!apic)
2861 goto nomem;
2862
2863 vcpu->arch.apic = apic;
2864
2865 if (kvm_x86_ops.alloc_apic_backing_page)
2866 apic->regs = kvm_x86_call(alloc_apic_backing_page)(vcpu);
2867 else
2868 apic->regs = (void *)get_zeroed_page(GFP_KERNEL_ACCOUNT);
2869 if (!apic->regs) {
2870 printk(KERN_ERR "malloc apic regs error for vcpu %x\n",
2871 vcpu->vcpu_id);
2872 goto nomem_free_apic;
2873 }
2874 apic->vcpu = vcpu;
2875
2876 apic->nr_lvt_entries = kvm_apic_calc_nr_lvt_entries(vcpu);
2877
> 2878 hrtimer_setup(&apic->lapic_timer.timer, apic_timer_fn, CLOCK_MONOTONIC,
2879 HRTIMER_MODE_ABS_HARD);
2880 if (lapic_timer_advance)
2881 apic->lapic_timer.timer_advance_ns = LAPIC_TIMER_ADVANCE_NS_INIT;
2882
2883 /*
2884 * Stuff the APIC ENABLE bit in lieu of temporarily incrementing
2885 * apic_hw_disabled; the full RESET value is set by kvm_lapic_reset().
2886 */
2887 vcpu->arch.apic_base = MSR_IA32_APICBASE_ENABLE;
2888 static_branch_inc(&apic_sw_disabled.key); /* sw disabled at reset */
2889 kvm_iodevice_init(&apic->dev, &apic_mmio_ops);
2890
2891 /*
2892 * Defer evaluating inhibits until the vCPU is first run, as this vCPU
2893 * will not get notified of any changes until this vCPU is visible to
2894 * other vCPUs (marked online and added to the set of vCPUs).
2895 *
2896 * Opportunistically mark APICv active as VMX in particularly is highly
2897 * unlikely to have inhibits. Ignore the current per-VM APICv state so
2898 * that vCPU creation is guaranteed to run with a deterministic value,
2899 * the request will ensure the vCPU gets the correct state before VM-Entry.
2900 */
2901 if (enable_apicv) {
2902 apic->apicv_active = true;
2903 kvm_make_request(KVM_REQ_APICV_UPDATE, vcpu);
2904 }
2905
2906 return 0;
2907 nomem_free_apic:
2908 kfree(apic);
2909 vcpu->arch.apic = NULL;
2910 nomem:
2911 return -ENOMEM;
2912 }
2913
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
Hi Nam,
kernel test robot noticed the following build errors:
[auto build test ERROR on kvm/queue]
[also build test ERROR on tip/sched/core perf-tools-next/perf-tools-next tip/perf/core perf-tools/perf-tools tip/timers/core axboe-block/for-next linus/master v6.12-rc5 next-20241028]
[cannot apply to kvm/linux-next acme/perf/core]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Nam-Cao/KVM-MIPS-Switch-to-use-hrtimer_setup/20241028-154142
base: https://git.kernel.org/pub/scm/virt/kvm/kvm.git queue
patch link: https://lore.kernel.org/r/8774212e6c10c550743219e00738492eb379227c.1729864823.git.namcao%40linutronix.de
patch subject: [PATCH 04/31] KVM: x86: Switch to use hrtimer_setup()
config: x86_64-rhel-8.3 (https://download.01.org/0day-ci/archive/20241028/202410282113.l2iM0IOZ-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241028/202410282113.l2iM0IOZ-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202410282113.l2iM0IOZ-lkp@intel.com/
All errors (new ones prefixed by >>):
arch/x86/kvm/lapic.c: In function 'kvm_create_lapic':
>> arch/x86/kvm/lapic.c:2878:9: error: implicit declaration of function 'hrtimer_setup'; did you mean 'timer_setup'? [-Werror=implicit-function-declaration]
2878 | hrtimer_setup(&apic->lapic_timer.timer, apic_timer_fn, CLOCK_MONOTONIC,
| ^~~~~~~~~~~~~
| timer_setup
cc1: some warnings being treated as errors
--
arch/x86/kvm/i8254.c: In function 'kvm_create_pit':
>> arch/x86/kvm/i8254.c:693:9: error: implicit declaration of function 'hrtimer_setup'; did you mean 'timer_setup'? [-Werror=implicit-function-declaration]
693 | hrtimer_setup(&pit_state->timer, pit_timer_fn, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
| ^~~~~~~~~~~~~
| timer_setup
cc1: some warnings being treated as errors
--
arch/x86/kvm/hyperv.c: In function 'stimer_init':
>> arch/x86/kvm/hyperv.c:955:9: error: implicit declaration of function 'hrtimer_setup'; did you mean 'timer_setup'? [-Werror=implicit-function-declaration]
955 | hrtimer_setup(&stimer->timer, stimer_timer_callback, CLOCK_MONOTONIC, HRTIMER_MODE_ABS);
| ^~~~~~~~~~~~~
| timer_setup
cc1: some warnings being treated as errors
--
arch/x86/kvm/vmx/nested.c: In function 'enter_vmx_operation':
>> arch/x86/kvm/vmx/nested.c:5278:9: error: implicit declaration of function 'hrtimer_setup'; did you mean 'timer_setup'? [-Werror=implicit-function-declaration]
5278 | hrtimer_setup(&vmx->nested.preemption_timer, vmx_preemption_timer_fn, CLOCK_MONOTONIC,
| ^~~~~~~~~~~~~
| timer_setup
cc1: some warnings being treated as errors
vim +2878 arch/x86/kvm/lapic.c
2847
2848 int kvm_create_lapic(struct kvm_vcpu *vcpu)
2849 {
2850 struct kvm_lapic *apic;
2851
2852 ASSERT(vcpu != NULL);
2853
2854 if (!irqchip_in_kernel(vcpu->kvm)) {
2855 static_branch_inc(&kvm_has_noapic_vcpu);
2856 return 0;
2857 }
2858
2859 apic = kzalloc(sizeof(*apic), GFP_KERNEL_ACCOUNT);
2860 if (!apic)
2861 goto nomem;
2862
2863 vcpu->arch.apic = apic;
2864
2865 if (kvm_x86_ops.alloc_apic_backing_page)
2866 apic->regs = kvm_x86_call(alloc_apic_backing_page)(vcpu);
2867 else
2868 apic->regs = (void *)get_zeroed_page(GFP_KERNEL_ACCOUNT);
2869 if (!apic->regs) {
2870 printk(KERN_ERR "malloc apic regs error for vcpu %x\n",
2871 vcpu->vcpu_id);
2872 goto nomem_free_apic;
2873 }
2874 apic->vcpu = vcpu;
2875
2876 apic->nr_lvt_entries = kvm_apic_calc_nr_lvt_entries(vcpu);
2877
> 2878 hrtimer_setup(&apic->lapic_timer.timer, apic_timer_fn, CLOCK_MONOTONIC,
2879 HRTIMER_MODE_ABS_HARD);
2880 if (lapic_timer_advance)
2881 apic->lapic_timer.timer_advance_ns = LAPIC_TIMER_ADVANCE_NS_INIT;
2882
2883 /*
2884 * Stuff the APIC ENABLE bit in lieu of temporarily incrementing
2885 * apic_hw_disabled; the full RESET value is set by kvm_lapic_reset().
2886 */
2887 vcpu->arch.apic_base = MSR_IA32_APICBASE_ENABLE;
2888 static_branch_inc(&apic_sw_disabled.key); /* sw disabled at reset */
2889 kvm_iodevice_init(&apic->dev, &apic_mmio_ops);
2890
2891 /*
2892 * Defer evaluating inhibits until the vCPU is first run, as this vCPU
2893 * will not get notified of any changes until this vCPU is visible to
2894 * other vCPUs (marked online and added to the set of vCPUs).
2895 *
2896 * Opportunistically mark APICv active as VMX in particularly is highly
2897 * unlikely to have inhibits. Ignore the current per-VM APICv state so
2898 * that vCPU creation is guaranteed to run with a deterministic value,
2899 * the request will ensure the vCPU gets the correct state before VM-Entry.
2900 */
2901 if (enable_apicv) {
2902 apic->apicv_active = true;
2903 kvm_make_request(KVM_REQ_APICV_UPDATE, vcpu);
2904 }
2905
2906 return 0;
2907 nomem_free_apic:
2908 kfree(apic);
2909 vcpu->arch.apic = NULL;
2910 nomem:
2911 return -ENOMEM;
2912 }
2913
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
© 2016 - 2026 Red Hat, Inc.