From: Zide Chen <zide.chen@intel.com>
To: qemu-devel@nongnu.org
Cc: pbonzini@redhat.com, mst@redhat.com, thuth@redhat.com,
cfontana@suse.de, xiaoyao.li@intel.com,
Zide Chen <zide.chen@intel.com>
Subject: [PATCH 3/3] target/i386: Move host_cpu_enable_cpu_pm into kvm_cpu_realizefn()
Date: Mon, 20 May 2024 10:47:33 -0700 [thread overview]
Message-ID: <20240520174733.32979-4-zide.chen@intel.com> (raw)
In-Reply-To: <20240520174733.32979-1-zide.chen@intel.com>
It seems not a good idea to expand features in host_cpu_realizefn,
which is for host CPU only. Additionally, cpu-pm option is KVM
specific, and it's cleaner to put it in kvm_cpu_realizefn(), together
with the WAITPKG code.
Fixes: f5cc5a5c1686 ("i386: split cpu accelerators from cpu.c, using AccelCPUClass")
Signed-off-by: Zide Chen <zide.chen@intel.com>
---
target/i386/host-cpu.c | 12 ------------
target/i386/kvm/kvm-cpu.c | 11 +++++++++--
2 files changed, 9 insertions(+), 14 deletions(-)
diff --git a/target/i386/host-cpu.c b/target/i386/host-cpu.c
index 280e427c017c..8b8bf5afeccf 100644
--- a/target/i386/host-cpu.c
+++ b/target/i386/host-cpu.c
@@ -42,15 +42,6 @@ static uint32_t host_cpu_phys_bits(void)
return host_phys_bits;
}
-static void host_cpu_enable_cpu_pm(X86CPU *cpu)
-{
- CPUX86State *env = &cpu->env;
-
- host_cpuid(5, 0, &cpu->mwait.eax, &cpu->mwait.ebx,
- &cpu->mwait.ecx, &cpu->mwait.edx);
- env->features[FEAT_1_ECX] |= CPUID_EXT_MONITOR;
-}
-
static uint32_t host_cpu_adjust_phys_bits(X86CPU *cpu)
{
uint32_t host_phys_bits = host_cpu_phys_bits();
@@ -83,9 +74,6 @@ bool host_cpu_realizefn(CPUState *cs, Error **errp)
X86CPU *cpu = X86_CPU(cs);
CPUX86State *env = &cpu->env;
- if (cpu->max_features && enable_cpu_pm) {
- host_cpu_enable_cpu_pm(cpu);
- }
if (env->features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) {
uint32_t phys_bits = host_cpu_adjust_phys_bits(cpu);
diff --git a/target/i386/kvm/kvm-cpu.c b/target/i386/kvm/kvm-cpu.c
index 3adcedf0dbc3..197c892da89a 100644
--- a/target/i386/kvm/kvm-cpu.c
+++ b/target/i386/kvm/kvm-cpu.c
@@ -64,9 +64,16 @@ static bool kvm_cpu_realizefn(CPUState *cs, Error **errp)
* cpu_common_realizefn() (via xcc->parent_realize)
*/
if (cpu->max_features) {
- if (enable_cpu_pm && kvm_has_waitpkg()) {
- env->features[FEAT_7_0_ECX] |= CPUID_7_0_ECX_WAITPKG;
+ if (enable_cpu_pm) {
+ if (kvm_has_waitpkg()) {
+ env->features[FEAT_7_0_ECX] |= CPUID_7_0_ECX_WAITPKG;
+ }
+
+ host_cpuid(5, 0, &cpu->mwait.eax, &cpu->mwait.ebx,
+ &cpu->mwait.ecx, &cpu->mwait.edx);
+ env->features[FEAT_1_ECX] |= CPUID_EXT_MONITOR;
}
+
if (cpu->ucode_rev == 0) {
cpu->ucode_rev =
kvm_arch_get_supported_msr_feature(kvm_state,
--
2.34.1
prev parent reply other threads:[~2024-05-20 17:49 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-20 17:47 [PATCH 0/3] improve -overcommit cpu-pm=on|off Zide Chen
2024-05-20 17:47 ` [PATCH 1/3] vl: Allow multiple -overcommit commands Zide Chen
2024-05-21 5:08 ` Thomas Huth
2024-05-21 5:16 ` Thomas Huth
2024-05-21 6:48 ` Chen, Zide
2024-05-21 6:54 ` Chen, Zide
2024-05-21 7:09 ` Chen, Zide
2024-05-20 17:47 ` [PATCH 2/3] target/i386: call cpu_exec_realizefn before x86_cpu_filter_features Zide Chen
2024-05-20 17:47 ` Zide Chen [this message]
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=20240520174733.32979-4-zide.chen@intel.com \
--to=zide.chen@intel.com \
--cc=cfontana@suse.de \
--cc=mst@redhat.com \
--cc=pbonzini@redhat.com \
--cc=qemu-devel@nongnu.org \
--cc=thuth@redhat.com \
--cc=xiaoyao.li@intel.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;
as well as URLs for NNTP newsgroup(s).