From: Paolo Bonzini <pbonzini@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>
Cc: LKML <linux-kernel@vger.kernel.org>,
Radim Krcmar <rkrcmar@redhat.com>,
Juergen Gross <jgross@suse.com>,
Pavel Tatashin <pasha.tatashin@oracle.com>,
steven.sistare@oracle.com, daniel.m.jordan@oracle.com,
x86@kernel.org, kvm@vger.kernel.org
Subject: Re: [patch 4/7] x86/kvmclock: Cleanup the code
Date: Mon, 9 Jul 2018 13:32:26 +0200 [thread overview]
Message-ID: <bc3e607c-0eaa-addf-7363-a994c99de828@redhat.com> (raw)
In-Reply-To: <20180709090514.GF2476@hirez.programming.kicks-ass.net>
On 09/07/2018 11:05, Peter Zijlstra wrote:
> On Fri, Jul 06, 2018 at 06:13:11PM +0200, Thomas Gleixner wrote:
>> - native_write_msr(msr_kvm_wall_clock, low, high);
>> + wrmsrl(msr_kvm_wall_clock, slow_virt_to_phys(&wall_clock));
> Does it matter that you went from an explicit native WRMSR instruction
> to a potentially paravirt MSR thing?
No, KVM doesn't paravirtualize wrmsr.
Paolo
next prev parent reply other threads:[~2018-07-09 11:32 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-06 16:13 [patch 0/7] x86/kvmclock: Remove memblock dependency and further cleanups Thomas Gleixner
2018-07-06 16:13 ` [patch 1/7] x86/kvmclock: Remove memblock dependency Thomas Gleixner
2018-07-06 16:13 ` [patch 2/7] x86/kvmclock: Remove page size requirement from wall_clock Thomas Gleixner
2018-07-12 2:15 ` Pavel Tatashin
2018-07-06 16:13 ` [patch 3/7] x86/kvmclock: Decrapify kvm_register_clock() Thomas Gleixner
2018-07-06 17:38 ` Paolo Bonzini
2018-07-06 17:39 ` Thomas Gleixner
2018-07-12 2:24 ` Pavel Tatashin
2018-07-06 16:13 ` [patch 4/7] x86/kvmclock: Cleanup the code Thomas Gleixner
2018-07-06 17:39 ` Paolo Bonzini
2018-07-09 9:05 ` Peter Zijlstra
2018-07-09 10:03 ` Thomas Gleixner
2018-07-09 11:32 ` Paolo Bonzini [this message]
2018-07-06 16:13 ` [patch 5/7] x86/kvmclock: Mark variables __initdata and __ro_after_init Thomas Gleixner
2018-07-12 2:31 ` Pavel Tatashin
2018-07-06 16:13 ` [patch 6/7] x86/kvmclock: Move kvmclock vsyscall param and init to kvmclock Thomas Gleixner
2018-07-06 17:43 ` Paolo Bonzini
2018-07-06 19:23 ` Thomas Gleixner
2018-07-12 2:52 ` Pavel Tatashin
2018-07-06 16:13 ` [patch 7/7] x86/kvmclock: Switch kvmclock data to a PER_CPU variable Thomas Gleixner
2018-07-12 3:12 ` Pavel Tatashin
2018-07-06 17:47 ` [patch 0/7] x86/kvmclock: Remove memblock dependency and further cleanups Paolo Bonzini
2018-07-06 23:51 ` Brijesh Singh
2018-07-09 9:22 ` [patch 8/7] x86/kvmclock: Avoid TSC recalibration Peter Zijlstra
2018-07-12 2:12 ` [patch 0/7] x86/kvmclock: Remove memblock dependency and further cleanups Pavel Tatashin
2018-07-13 22:51 ` Thomas Gleixner
2018-07-14 0:20 ` Pavel Tatashin
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