From: Yosry Ahmed <yosry@kernel.org>
To: Sean Christopherson <seanjc@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Jim Mattson <jmattson@google.com>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Yosry Ahmed <yosry@kernel.org>
Subject: [PATCH v4 1/6] KVM: x86: Move enable_pmu/enable_mediated_pmu to pmu.h and pmu.c
Date: Thu, 26 Mar 2026 03:11:45 +0000 [thread overview]
Message-ID: <20260326031150.3774017-2-yosry@kernel.org> (raw)
In-Reply-To: <20260326031150.3774017-1-yosry@kernel.org>
The declaration and definition of enable_pmu/enable_mediated_pmu
semantically belongs in pmu.h and pmu.c, and more importantly, pmu.h
uses enable_mediated_pmu and relies on the caller including x86.h.
There is already precedence for other module params defined outside of
x86.c, so move enable_pmu/enable_mediated_pmu to pmu.c.
No functional change intended.
Signed-off-by: Yosry Ahmed <yosry@kernel.org>
---
arch/x86/kvm/pmu.c | 10 ++++++++++
arch/x86/kvm/pmu.h | 3 +++
arch/x86/kvm/x86.c | 9 ---------
arch/x86/kvm/x86.h | 3 ---
4 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index e218352e34231..d6ac3c55fce55 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -16,6 +16,7 @@
#include <linux/perf_event.h>
#include <linux/bsearch.h>
#include <linux/sort.h>
+#include <linux/moduleparam.h>
#include <asm/perf_event.h>
#include <asm/cpu_device_id.h>
#include "x86.h"
@@ -33,6 +34,15 @@ static struct x86_pmu_capability __read_mostly kvm_host_pmu;
struct x86_pmu_capability __read_mostly kvm_pmu_cap;
EXPORT_SYMBOL_FOR_KVM_INTERNAL(kvm_pmu_cap);
+/* Enable/disable PMU virtualization */
+bool __read_mostly enable_pmu = true;
+EXPORT_SYMBOL_FOR_KVM_INTERNAL(enable_pmu);
+module_param(enable_pmu, bool, 0444);
+
+/* Enable/disabled mediated PMU virtualization. */
+bool __read_mostly enable_mediated_pmu;
+EXPORT_SYMBOL_FOR_KVM_INTERNAL(enable_mediated_pmu);
+
struct kvm_pmu_emulated_event_selectors {
u64 INSTRUCTIONS_RETIRED;
u64 BRANCH_INSTRUCTIONS_RETIRED;
diff --git a/arch/x86/kvm/pmu.h b/arch/x86/kvm/pmu.h
index 0925246731cb1..b1f2418e960ac 100644
--- a/arch/x86/kvm/pmu.h
+++ b/arch/x86/kvm/pmu.h
@@ -53,6 +53,9 @@ struct kvm_pmu_ops {
const u32 MSR_STRIDE;
};
+extern bool enable_pmu;
+extern bool enable_mediated_pmu;
+
void kvm_pmu_ops_update(const struct kvm_pmu_ops *pmu_ops);
void kvm_handle_guest_mediated_pmi(void);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 0b5d48e75b657..0a5fd473a24e1 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -182,15 +182,6 @@ module_param(force_emulation_prefix, int, 0644);
int __read_mostly pi_inject_timer = -1;
module_param(pi_inject_timer, bint, 0644);
-/* Enable/disable PMU virtualization */
-bool __read_mostly enable_pmu = true;
-EXPORT_SYMBOL_FOR_KVM_INTERNAL(enable_pmu);
-module_param(enable_pmu, bool, 0444);
-
-/* Enable/disabled mediated PMU virtualization. */
-bool __read_mostly enable_mediated_pmu;
-EXPORT_SYMBOL_FOR_KVM_INTERNAL(enable_mediated_pmu);
-
bool __read_mostly eager_page_split = true;
module_param(eager_page_split, bool, 0644);
diff --git a/arch/x86/kvm/x86.h b/arch/x86/kvm/x86.h
index 44a28d343d407..48f3e8c0dc30d 100644
--- a/arch/x86/kvm/x86.h
+++ b/arch/x86/kvm/x86.h
@@ -480,9 +480,6 @@ fastpath_t handle_fastpath_invd(struct kvm_vcpu *vcpu);
extern struct kvm_caps kvm_caps;
extern struct kvm_host_values kvm_host;
-extern bool enable_pmu;
-extern bool enable_mediated_pmu;
-
void kvm_setup_xss_caps(void);
/*
--
2.53.0.1018.g2bb0e51243-goog
next prev parent reply other threads:[~2026-03-26 3:12 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-26 3:11 [PATCH v4 0/6] KVM: x86/pmu: Add support for AMD Host-Only/Guest-Only bits Yosry Ahmed
2026-03-26 3:11 ` Yosry Ahmed [this message]
2026-03-26 3:11 ` [PATCH v4 2/6] KVM: x86: Move guest_mode helpers to x86.h Yosry Ahmed
2026-03-26 22:48 ` kernel test robot
2026-03-26 23:18 ` Yosry Ahmed
2026-03-27 3:15 ` kernel test robot
2026-03-26 3:11 ` [PATCH v4 3/6] KVM: x86/pmu: Disable counters based on Host-Only/Guest-Only bits in SVM Yosry Ahmed
2026-04-07 1:30 ` Sean Christopherson
2026-03-26 3:11 ` [PATCH v4 4/6] KVM: x86/pmu: Re-evaluate Host-Only/Guest-Only on nested SVM transitions Yosry Ahmed
2026-04-07 1:35 ` Sean Christopherson
2026-03-26 3:11 ` [PATCH v4 5/6] KVM: x86/pmu: Allow Host-Only/Guest-Only bits with nSVM and mediated PMU Yosry Ahmed
2026-03-26 3:11 ` [PATCH v4 6/6] KVM: selftests: Add svm_pmu_host_guest_test for Host-Only/Guest-Only bits Yosry Ahmed
2026-04-07 1:39 ` Sean Christopherson
2026-04-07 3:23 ` Jim Mattson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260326031150.3774017-2-yosry@kernel.org \
--to=yosry@kernel.org \
--cc=jmattson@google.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=pbonzini@redhat.com \
--cc=seanjc@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox