From: Frederic Weisbecker <frederic@kernel.org>
To: linux-kernel@vger.kernel.org
Cc: "Frederic Weisbecker" <frederic@kernel.org>,
"Paolo Bonzini" <pbonzini@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
"Radim Krčmář" <rkrcmar@redhat.com>,
"Wanpeng Li" <wanpengli@tencent.com>,
"Borislav Petkov" <bp@alien8.de>,
"Thomas Gleixner" <tglx@linutronix.de>,
"Sean Christopherson" <sean.j.christopherson@intel.com>,
"Ingo Molnar" <mingo@redhat.com>,
"Jim Mattson" <jmattson@google.com>,
"Joerg Roedel" <joro@8bytes.org>,
"Andy Lutomirski" <luto@kernel.org>,
"Vitaly Kuznetsov" <vkuznets@redhat.com>
Subject: [PATCH 0/2] x86/context-tracking: Remove last remaining calls to exception_enter/exception_exit()
Date: Fri, 27 Dec 2019 17:36:10 +0100 [thread overview]
Message-ID: <20191227163612.10039-1-frederic@kernel.org> (raw)
Thanks to the cleanups from Andy Lutomirski over the years, those calls
can now be removed. This will allow for nice things in the future for
x86 support on full nohz:
* Remove TIF_NOHZ and use a per-cpu switch to enable, disable context
tracking.
* Avoid context tracking on housekeepers.
* Dynamically enable/disable context tracking on CPU on runtime and
therefore allow runtime enable/disable of nohz_full
* Make nohz_full a property of cpuset.
Frederic Weisbecker (2):
x86/context-tracking: Remove exception_enter/exit() from
do_page_fault()
x86/context-tracking: Remove exception_enter/exit() from
KVM_PV_REASON_PAGE_NOT_PRESENT async page fault
arch/x86/kernel/kvm.c | 4 ----
arch/x86/mm/fault.c | 39 ++++++++++++---------------------------
2 files changed, 12 insertions(+), 31 deletions(-)
--
2.23.0
next reply other threads:[~2019-12-27 16:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-27 16:36 Frederic Weisbecker [this message]
2019-12-27 16:36 ` [PATCH 1/2] x86/context-tracking: Remove exception_enter/exit() from do_page_fault() Frederic Weisbecker
2020-01-07 7:36 ` [tip: x86/asm] " tip-bot2 for Frederic Weisbecker
2019-12-27 16:36 ` [PATCH 2/2] x86/context-tracking: Remove exception_enter/exit() from KVM_PV_REASON_PAGE_NOT_PRESENT async page fault Frederic Weisbecker
2020-01-07 7:36 ` [tip: x86/asm] " tip-bot2 for Frederic Weisbecker
2020-01-06 15:05 ` [PATCH 0/2] x86/context-tracking: Remove last remaining calls to exception_enter/exception_exit() Peter Zijlstra
2020-01-06 15:58 ` Frederic Weisbecker
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