From: Sasha Levin <sashal@kernel.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Sasha Levin <sashal@kernel.org>,
tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, x86@kernel.org, kvm@vger.kernel.org
Subject: [PATCH MANUALSEL 5.15 2/8] KVM: nVMX: eVMCS: Filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER
Date: Wed, 9 Feb 2022 13:56:47 -0500 [thread overview]
Message-ID: <20220209185653.48833-2-sashal@kernel.org> (raw)
In-Reply-To: <20220209185653.48833-1-sashal@kernel.org>
From: Vitaly Kuznetsov <vkuznets@redhat.com>
[ Upstream commit 7a601e2cf61558dfd534a9ecaad09f5853ad8204 ]
Enlightened VMCS v1 doesn't have VMX_PREEMPTION_TIMER_VALUE field,
PIN_BASED_VMX_PREEMPTION_TIMER is also filtered out already so it makes
sense to filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER too.
Note, none of the currently existing Windows/Hyper-V versions are known
to enable 'save VMX-preemption timer value' when eVMCS is in use, the
change is aimed at making the filtering future proof.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20220112170134.1904308-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
arch/x86/kvm/vmx/evmcs.h | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/x86/kvm/vmx/evmcs.h b/arch/x86/kvm/vmx/evmcs.h
index 152ab0aa82cf6..b43976e4b9636 100644
--- a/arch/x86/kvm/vmx/evmcs.h
+++ b/arch/x86/kvm/vmx/evmcs.h
@@ -59,7 +59,9 @@ DECLARE_STATIC_KEY_FALSE(enable_evmcs);
SECONDARY_EXEC_SHADOW_VMCS | \
SECONDARY_EXEC_TSC_SCALING | \
SECONDARY_EXEC_PAUSE_LOOP_EXITING)
-#define EVMCS1_UNSUPPORTED_VMEXIT_CTRL (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)
+#define EVMCS1_UNSUPPORTED_VMEXIT_CTRL \
+ (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | \
+ VM_EXIT_SAVE_VMX_PREEMPTION_TIMER)
#define EVMCS1_UNSUPPORTED_VMENTRY_CTRL (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)
#define EVMCS1_UNSUPPORTED_VMFUNC (VMX_VMFUNC_EPTP_SWITCHING)
--
2.34.1
next prev parent reply other threads:[~2022-02-09 18:57 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-09 18:56 [PATCH MANUALSEL 5.15 1/8] KVM: eventfd: Fix false positive RCU usage warning Sasha Levin
2022-02-09 18:56 ` Sasha Levin [this message]
2022-02-10 16:40 ` [PATCH MANUALSEL 5.15 2/8] KVM: nVMX: eVMCS: Filter out VM_EXIT_SAVE_VMX_PREEMPTION_TIMER Paolo Bonzini
2022-02-09 18:56 ` [PATCH MANUALSEL 5.15 3/8] KVM: nVMX: Also filter MSR_IA32_VMX_TRUE_PINBASED_CTLS when eVMCS Sasha Levin
2022-02-10 16:40 ` Paolo Bonzini
2022-02-09 18:56 ` [PATCH MANUALSEL 5.15 4/8] KVM: nVMX: WARN on any attempt to allocate shadow VMCS for vmcs02 Sasha Levin
2022-02-10 16:41 ` Paolo Bonzini
2022-02-09 18:56 ` [PATCH MANUALSEL 5.15 5/8] KVM: SVM: Don't kill SEV guest if SMAP erratum triggers in usermode Sasha Levin
2022-02-10 16:40 ` Paolo Bonzini
2022-02-09 18:56 ` [PATCH MANUALSEL 5.15 6/8] KVM: SVM: Explicitly require DECODEASSISTS to enable SEV support Sasha Levin
2022-02-10 16:42 ` Paolo Bonzini
2022-02-09 18:56 ` [PATCH MANUALSEL 5.15 7/8] KVM: VMX: Set vmcs.PENDING_DBG.BS on #DB in STI/MOVSS blocking shadow Sasha Levin
2022-02-10 16:40 ` Paolo Bonzini
2022-02-09 18:56 ` [PATCH MANUALSEL 5.15 8/8] KVM: x86: Report deprecated x87 features in supported CPUID Sasha Levin
2022-02-10 16:40 ` Paolo Bonzini
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=20220209185653.48833-2-sashal@kernel.org \
--to=sashal@kernel.org \
--cc=bp@alien8.de \
--cc=dave.hansen@linux.intel.com \
--cc=kvm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@redhat.com \
--cc=pbonzini@redhat.com \
--cc=stable@vger.kernel.org \
--cc=tglx@linutronix.de \
--cc=vkuznets@redhat.com \
--cc=x86@kernel.org \
/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).