| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20250529011102.378749-6-maobibo@loongson.cn>
Date: Thu, 29 May 2025 09:11:02 +0800
From: Bibo Mao <maobibo@...ngson.cn>
To: Tianrui Zhao <zhaotianrui@...ngson.cn>,
Huacai Chen <chenhuacai@...nel.org>,
Xianglai Li <lixianglai@...ngson.cn>
Cc: kvm@...r.kernel.org,
loongarch@...ts.linux.dev,
linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] LoongArch: KVM: Add stat information with kernel irqchip
Move stat information about kernel irqchip from VM to vCPU, and add
entry with structure kvm_vcpu_stats_desc[], so that it can display
with directory /sys/kernel/debug/kvm.
Also unify stat information about eiointc_read_exits and
eiointc_write_exits into eiointc_emu_exits, to avoid two many entries
about stat information output.
Signed-off-by: Bibo Mao <maobibo@...ngson.cn>
---
arch/loongarch/include/asm/kvm_host.h | 9 +++------
arch/loongarch/kvm/intc/eiointc.c | 4 ++--
arch/loongarch/kvm/intc/ipi.c | 28 ++++-----------------------
arch/loongarch/kvm/intc/pch_pic.c | 4 ++--
arch/loongarch/kvm/vcpu.c | 5 ++++-
5 files changed, 15 insertions(+), 35 deletions(-)
diff --git a/arch/loongarch/include/asm/kvm_host.h b/arch/loongarch/include/asm/kvm_host.h
index f457c2662e2f..959e8df44612 100644
--- a/arch/loongarch/include/asm/kvm_host.h
+++ b/arch/loongarch/include/asm/kvm_host.h
@@ -50,12 +50,6 @@ struct kvm_vm_stat {
struct kvm_vm_stat_generic generic;
u64 pages;
u64 hugepages;
- u64 ipi_read_exits;
- u64 ipi_write_exits;
- u64 eiointc_read_exits;
- u64 eiointc_write_exits;
- u64 pch_pic_read_exits;
- u64 pch_pic_write_exits;
};
struct kvm_vcpu_stat {
@@ -65,6 +59,9 @@ struct kvm_vcpu_stat {
u64 cpucfg_exits;
u64 signal_exits;
u64 hypercall_exits;
+ u64 ipi_emu_exits;
+ u64 eiointc_emu_exits;
+ u64 pch_pic_emu_exits;
};
#define KVM_MEM_HUGEPAGE_CAPABLE (1UL << 0)
diff --git a/arch/loongarch/kvm/intc/eiointc.c b/arch/loongarch/kvm/intc/eiointc.c
index 41fe1e6e9d3b..8f844828a308 100644
--- a/arch/loongarch/kvm/intc/eiointc.c
+++ b/arch/loongarch/kvm/intc/eiointc.c
@@ -311,7 +311,7 @@ static int kvm_eiointc_read(struct kvm_vcpu *vcpu,
return -EINVAL;
}
- vcpu->kvm->stat.eiointc_read_exits++;
+ vcpu->stat.eiointc_emu_exits++;
spin_lock_irqsave(&eiointc->lock, flags);
switch (len) {
case 1:
@@ -685,7 +685,7 @@ static int kvm_eiointc_write(struct kvm_vcpu *vcpu,
return -EINVAL;
}
- vcpu->kvm->stat.eiointc_write_exits++;
+ vcpu->stat.eiointc_emu_exits++;
spin_lock_irqsave(&eiointc->lock, flags);
switch (len) {
case 1:
diff --git a/arch/loongarch/kvm/intc/ipi.c b/arch/loongarch/kvm/intc/ipi.c
index fe734dc062ed..b66f91209940 100644
--- a/arch/loongarch/kvm/intc/ipi.c
+++ b/arch/loongarch/kvm/intc/ipi.c
@@ -268,36 +268,16 @@ static int kvm_ipi_read(struct kvm_vcpu *vcpu,
struct kvm_io_device *dev,
gpa_t addr, int len, void *val)
{
- int ret;
- struct loongarch_ipi *ipi;
-
- ipi = vcpu->kvm->arch.ipi;
- if (!ipi) {
- kvm_err("%s: ipi irqchip not valid!\n", __func__);
- return -EINVAL;
- }
- ipi->kvm->stat.ipi_read_exits++;
- ret = loongarch_ipi_readl(vcpu, addr, len, val);
-
- return ret;
+ vcpu->stat.ipi_emu_exits++;
+ return loongarch_ipi_readl(vcpu, addr, len, val);
}
static int kvm_ipi_write(struct kvm_vcpu *vcpu,
struct kvm_io_device *dev,
gpa_t addr, int len, const void *val)
{
- int ret;
- struct loongarch_ipi *ipi;
-
- ipi = vcpu->kvm->arch.ipi;
- if (!ipi) {
- kvm_err("%s: ipi irqchip not valid!\n", __func__);
- return -EINVAL;
- }
- ipi->kvm->stat.ipi_write_exits++;
- ret = loongarch_ipi_writel(vcpu, addr, len, val);
-
- return ret;
+ vcpu->stat.ipi_emu_exits++;
+ return loongarch_ipi_writel(vcpu, addr, len, val);
}
static const struct kvm_io_device_ops kvm_ipi_ops = {
diff --git a/arch/loongarch/kvm/intc/pch_pic.c b/arch/loongarch/kvm/intc/pch_pic.c
index 08fce845f668..6dba2ec79c16 100644
--- a/arch/loongarch/kvm/intc/pch_pic.c
+++ b/arch/loongarch/kvm/intc/pch_pic.c
@@ -196,7 +196,7 @@ static int kvm_pch_pic_read(struct kvm_vcpu *vcpu,
}
/* statistics of pch pic reading */
- vcpu->kvm->stat.pch_pic_read_exits++;
+ vcpu->stat.pch_pic_emu_exits++;
ret = loongarch_pch_pic_read(s, addr, len, val);
return ret;
@@ -303,7 +303,7 @@ static int kvm_pch_pic_write(struct kvm_vcpu *vcpu,
}
/* statistics of pch pic writing */
- vcpu->kvm->stat.pch_pic_write_exits++;
+ vcpu->stat.pch_pic_emu_exits++;
ret = loongarch_pch_pic_write(s, addr, len, val);
return ret;
diff --git a/arch/loongarch/kvm/vcpu.c b/arch/loongarch/kvm/vcpu.c
index 5af32ec62cb1..06397ae70811 100644
--- a/arch/loongarch/kvm/vcpu.c
+++ b/arch/loongarch/kvm/vcpu.c
@@ -20,7 +20,10 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = {
STATS_DESC_COUNTER(VCPU, idle_exits),
STATS_DESC_COUNTER(VCPU, cpucfg_exits),
STATS_DESC_COUNTER(VCPU, signal_exits),
- STATS_DESC_COUNTER(VCPU, hypercall_exits)
+ STATS_DESC_COUNTER(VCPU, hypercall_exits),
+ STATS_DESC_COUNTER(VCPU, ipi_emu_exits),
+ STATS_DESC_COUNTER(VCPU, eiointc_emu_exits),
+ STATS_DESC_COUNTER(VCPU, pch_pic_emu_exits)
};
const struct kvm_stats_header kvm_vcpu_stats_header = {
--
2.39.3
Powered by blists - more mailing lists