From: Sean Christopherson <seanjc@google.com>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Jim Mattson <jmattson@google.com>, Joerg Roedel <joro@8bytes.org>,
kvm@vger.kernel.org, linux-kernel@vger.kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
Michael Tokarev <mjt@tls.msk.ru>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Frederic Weisbecker <frederic@kernel.org>
Subject: [PATCH v4 0/8] KVM: Fix tick-based accounting for x86 guests
Date: Tue, 4 May 2021 17:27:27 -0700 [thread overview]
Message-ID: <20210505002735.1684165-1-seanjc@google.com> (raw)
Fix tick-based accounting for x86 guests, and do additional cleanups to
further disentangle guest time accounting and to deduplicate code.
v4:
- Add R-b's (dropped one due to code change). [Christian]
- Drop instrumentation annotation shuffling since s390 may be gaining
support. [Christian].
- Drop "irqs_off" from context_tracking_guest_exit(). [Frederic]
- Account guest time after enabling IRQs, even when using context
tracking to precisely account time. [Frederic]
v3 (delta from Wanpeng's v2):
- https://lkml.kernel.org/r/20210415222106.1643837-1-seanjc@google.com
- s/context_guest/context_tracking_guest, purely to match the existing
functions. I have no strong opinion either way.
- Split only the "exit" functions.
- Partially open code vcpu_account_guest_exit() and
__vtime_account_guest_exit() in x86 to avoid churn when segueing into
my cleanups (see above).
older:
- https://lkml.kernel.org/r/1618298169-3831-1-git-send-email-wanpengli@tencent.com
- https://lkml.kernel.org/r/20210413182933.1046389-1-seanjc@google.com
Sean Christopherson (5):
sched/vtime: Move vtime accounting external declarations above inlines
sched/vtime: Move guest enter/exit vtime accounting to vtime.h
context_tracking: Consolidate guest enter/exit wrappers
context_tracking: KVM: Move guest enter/exit wrappers to KVM's domain
KVM: x86: Consolidate guest enter/exit logic to common helpers
Wanpeng Li (3):
context_tracking: Move guest exit context tracking to separate helpers
context_tracking: Move guest exit vtime accounting to separate helpers
KVM: x86: Defer vtime accounting 'til after IRQ handling
arch/x86/kvm/svm/svm.c | 39 +--------
arch/x86/kvm/vmx/vmx.c | 39 +--------
arch/x86/kvm/x86.c | 9 ++
arch/x86/kvm/x86.h | 45 ++++++++++
include/linux/context_tracking.h | 92 ++++-----------------
include/linux/kvm_host.h | 45 ++++++++++
include/linux/vtime.h | 138 +++++++++++++++++++------------
7 files changed, 205 insertions(+), 202 deletions(-)
--
2.31.1.527.g47e6f16901-goog
next reply other threads:[~2021-05-05 0:27 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 0:27 Sean Christopherson [this message]
2021-05-05 0:27 ` [PATCH v4 1/8] context_tracking: Move guest exit context tracking to separate helpers Sean Christopherson
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Wanpeng Li
2021-05-05 0:27 ` [PATCH v4 2/8] context_tracking: Move guest exit vtime accounting " Sean Christopherson
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Wanpeng Li
2021-05-05 0:27 ` [PATCH v4 3/8] KVM: x86: Defer vtime accounting 'til after IRQ handling Sean Christopherson
2021-05-05 20:14 ` Thomas Gleixner
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Wanpeng Li
2021-05-05 0:27 ` [PATCH v4 4/8] sched/vtime: Move vtime accounting external declarations above inlines Sean Christopherson
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05 0:27 ` [PATCH v4 5/8] sched/vtime: Move guest enter/exit vtime accounting to vtime.h Sean Christopherson
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05 0:27 ` [PATCH v4 6/8] context_tracking: Consolidate guest enter/exit wrappers Sean Christopherson
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05 0:27 ` [PATCH v4 7/8] context_tracking: KVM: Move guest enter/exit wrappers to KVM's domain Sean Christopherson
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
2021-05-05 0:27 ` [PATCH v4 8/8] KVM: x86: Consolidate guest enter/exit logic to common helpers Sean Christopherson
2021-05-06 12:14 ` [tip: x86/urgent] " tip-bot2 for Sean Christopherson
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