From: isaku.yamahata@intel.com
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
Paolo Bonzini <pbonzini@redhat.com>,
Sean Christopherson <seanjc@google.com>,
Thomas Gleixner <tglx@linutronix.de>,
Marc Zyngier <maz@kernel.org>, Will Deacon <will@kernel.org>
Cc: isaku.yamahata@intel.com, isaku.yamahata@gmail.com,
Kai Huang <kai.huang@intel.com>, Chao Gao <chao.gao@intel.com>,
Atish Patra <atishp@atishpatra.org>,
Shaokun Zhang <zhangshaokun@hisilicon.com>,
Qi Liu <liuqi115@huawei.com>, John Garry <john.garry@huawei.com>,
Daniel Lezcano <daniel.lezcano@linaro.org>,
Huang Ying <ying.huang@intel.com>,
Huacai Chen <chenhuacai@kernel.org>,
Dave Hansen <dave.hansen@linux.intel.com>,
Borislav Petkov <bp@alien8.de>
Subject: [PATCH v3 05/22] KVM: Provide more information in kernel log if hardware enabling fails
Date: Thu, 1 Sep 2022 19:17:40 -0700 [thread overview]
Message-ID: <5f659936255837f77e821011bb9445a98322e3ae.1662084396.git.isaku.yamahata@intel.com> (raw)
In-Reply-To: <cover.1662084396.git.isaku.yamahata@intel.com>
From: Sean Christopherson <seanjc@google.com>
Provide the name of the calling function to hardware_enable_nolock() and
include it in the error message to provide additional information on
exactly what path failed.
Opportunistically bump the pr_info() to pr_warn(), failure to enable
virtualization support is warn-worthy as _something_ is wrong with the
system.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Chao Gao <chao.gao@intel.com>
Link: https://lore.kernel.org/r/20220216031528.92558-4-chao.gao@intel.com
Signed-off-by: Isaku Yamahata <isaku.yamahata@intel.com>
---
virt/kvm/kvm_main.c | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 4243a9541543..278eb6cc7cbe 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -4991,7 +4991,7 @@ static struct miscdevice kvm_dev = {
&kvm_chardev_ops,
};
-static void hardware_enable_nolock(void *junk)
+static void hardware_enable_nolock(void *caller_name)
{
int cpu = raw_smp_processor_id();
int r;
@@ -5006,7 +5006,8 @@ static void hardware_enable_nolock(void *junk)
if (r) {
cpumask_clear_cpu(cpu, cpus_hardware_enabled);
atomic_inc(&hardware_enable_failed);
- pr_info("kvm: enabling virtualization on CPU%d failed\n", cpu);
+ pr_warn("kvm: enabling virtualization on CPU%d failed during %s()\n",
+ cpu, (const char *)caller_name);
}
}
@@ -5014,7 +5015,7 @@ static int kvm_starting_cpu(unsigned int cpu)
{
raw_spin_lock(&kvm_count_lock);
if (kvm_usage_count)
- hardware_enable_nolock(NULL);
+ hardware_enable_nolock((void *)__func__);
raw_spin_unlock(&kvm_count_lock);
return 0;
}
@@ -5063,7 +5064,7 @@ static int hardware_enable_all(void)
kvm_usage_count++;
if (kvm_usage_count == 1) {
atomic_set(&hardware_enable_failed, 0);
- on_each_cpu(hardware_enable_nolock, NULL, 1);
+ on_each_cpu(hardware_enable_nolock, (void *)__func__, 1);
if (atomic_read(&hardware_enable_failed)) {
hardware_disable_all_nolock();
@@ -5686,7 +5687,7 @@ static void kvm_resume(void)
{
if (kvm_usage_count) {
lockdep_assert_not_held(&kvm_count_lock);
- hardware_enable_nolock(NULL);
+ hardware_enable_nolock((void *)__func__);
}
}
--
2.25.1
next prev parent reply other threads:[~2022-09-02 2:18 UTC|newest]
Thread overview: 50+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-02 2:17 [PATCH v3 00/22] KVM: hardware enable/disable reorganize isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 01/22] KVM: x86: Drop kvm_user_return_msr_cpu_online() isaku.yamahata
2022-09-05 1:59 ` Chao Gao
2022-09-05 5:30 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 02/22] KVM: x86: Use this_cpu_ptr() instead of per_cpu_ptr(smp_processor_id()) isaku.yamahata
2022-09-05 5:35 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 03/22] KVM: x86: Move check_processor_compatibility from init ops to runtime ops isaku.yamahata
2022-09-05 5:42 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 04/22] Partially revert "KVM: Pass kvm_init()'s opaque param to additional arch funcs" isaku.yamahata
2022-09-05 5:48 ` Yuan Yao
2022-09-02 2:17 ` isaku.yamahata [this message]
2022-09-05 5:56 ` [PATCH v3 05/22] KVM: Provide more information in kernel log if hardware enabling fails Yuan Yao
2022-09-02 2:17 ` [PATCH v3 06/22] KVM: arm64: Simplify the CPUHP logic isaku.yamahata
2022-09-05 7:05 ` Yuan Yao
2022-09-05 9:29 ` Marc Zyngier
2022-09-05 12:39 ` Marc Zyngier
2022-09-07 15:12 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 07/22] KVM: Rename and move CPUHP_AP_KVM_STARTING to ONLINE section isaku.yamahata
2022-09-05 7:49 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 08/22] KVM: Do compatibility checks on hotplugged CPUs isaku.yamahata
2022-09-06 1:25 ` Yuan Yao
2022-09-02 2:17 ` [PATCH v3 09/22] KVM: Do processor compatibility check on resume isaku.yamahata
2022-09-05 8:40 ` Yuan Yao
2022-09-05 9:27 ` Yuan Yao
2022-09-08 18:21 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 10/22] KVM: Drop kvm_count_lock and instead protect kvm_usage_count with kvm_lock isaku.yamahata
2022-09-06 2:46 ` Yuan Yao
2022-09-06 6:32 ` Marc Zyngier
2022-09-06 21:44 ` Isaku Yamahata
2022-09-08 18:24 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 11/22] KVM: Add arch hooks for PM events with empty stub isaku.yamahata
2022-09-06 6:25 ` Yuan Yao
2022-09-08 19:11 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 12/22] KVM: x86: Move TSC fixup logic to KVM arch resume callback isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 13/22] KVM: Add arch hook when VM is added/deleted isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 14/22] KVM: Move out KVM arch PM hooks and hardware enable/disable logic isaku.yamahata
2022-09-06 7:43 ` Yuan Yao
2022-09-08 19:15 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 15/22] KVM: kvm_arch.c: Remove _nolock post fix isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 16/22] KVM: kvm_arch.c: Remove a global variable, hardware_enable_failed isaku.yamahata
2022-09-07 5:56 ` Yuan Yao
2022-09-08 22:51 ` Isaku Yamahata
2022-09-02 2:17 ` [PATCH v3 17/22] KVM: x86: Duplicate arch callbacks related to pm events isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 18/22] KVM: Eliminate kvm_arch_post_init_vm() isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 19/22] KVM: x86: Delete kvm_arch_hardware_enable/disable() isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 20/22] KVM: Add config to not compile kvm_arch.c isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 21/22] RFC: KVM: x86: Remove cpus_hardware_enabled and related sanity check isaku.yamahata
2022-09-02 2:17 ` [PATCH v3 22/22] RFC: KVM: " isaku.yamahata
2022-09-05 15:38 ` [PATCH v3 00/22] KVM: hardware enable/disable reorganize Marc Zyngier
2022-09-06 22:25 ` Isaku Yamahata
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