From: pbonzini@redhat.com (Paolo Bonzini)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC/RFT PATCH 0/3] arm64: KVM: work around incoherency with uncached guest mappings
Date: Thu, 19 Feb 2015 18:57:24 +0100 [thread overview]
Message-ID: <54E62404.9040702@redhat.com> (raw)
In-Reply-To: <20150219175518.GB26965@hawk.usersys.redhat.com>
On 19/02/2015 18:55, Andrew Jones wrote:
>> > > (I don't have an exact number for how many times it went to EL1 because
>> > > access_mair() doesn't have a trace point.)
>> > > (I got the 62873 number by testing a 3rd kernel build that only had patch
>> > > 3/3 applied to the base, and counting kvm_toggle_cache events.)
>> > > (The number 50 is the number of kvm_toggle_cache events *without* 3/3
>> > > applied.)
>> > >
>> > > I consider this bad news because, even considering it only goes to EL2,
>> > > it goes a ton more than it used to. I realize patch 3/3 isn't the final
>> > > plan for enabling traps though.
If a full guest boots, can you try timing a kernel compile?
Paolo
next prev parent reply other threads:[~2015-02-19 17:57 UTC|newest]
Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-19 10:54 [RFC/RFT PATCH 0/3] arm64: KVM: work around incoherency with uncached guest mappings Ard Biesheuvel
2015-02-19 10:54 ` [RFC/RFT PATCH 1/3] arm64: KVM: handle some sysreg writes in EL2 Ard Biesheuvel
2015-03-03 17:59 ` Mario Smarduch
2015-02-19 10:54 ` [RFC/RFT PATCH 2/3] arm64: KVM: mangle MAIR register to prevent uncached guest mappings Ard Biesheuvel
2015-02-19 10:54 ` [RFC/RFT PATCH 3/3] arm64: KVM: keep trapping of VM sysreg writes enabled Ard Biesheuvel
2015-02-19 13:40 ` Marc Zyngier
2015-02-19 13:44 ` Ard Biesheuvel
2015-02-19 15:19 ` Marc Zyngier
2015-02-19 15:22 ` Ard Biesheuvel
2015-02-19 14:50 ` [RFC/RFT PATCH 0/3] arm64: KVM: work around incoherency with uncached guest mappings Alexander Graf
2015-02-19 14:56 ` Ard Biesheuvel
2015-02-19 15:27 ` Alexander Graf
2015-02-19 15:31 ` Ard Biesheuvel
2015-02-19 16:57 ` Andrew Jones
2015-02-19 17:19 ` Ard Biesheuvel
2015-02-19 17:55 ` Andrew Jones
2015-02-19 17:57 ` Paolo Bonzini [this message]
2015-02-20 14:29 ` Andrew Jones
2015-02-20 14:37 ` Ard Biesheuvel
2015-02-20 15:36 ` Andrew Jones
2015-02-24 14:55 ` Andrew Jones
2015-02-24 17:47 ` Ard Biesheuvel
2015-02-24 19:12 ` Andrew Jones
2015-03-02 16:31 ` Christoffer Dall
2015-03-02 16:47 ` Paolo Bonzini
2015-03-02 16:55 ` Laszlo Ersek
2015-03-02 17:05 ` Andrew Jones
2015-03-02 16:48 ` Andrew Jones
2015-03-03 2:20 ` Mario Smarduch
2015-03-04 11:35 ` Catalin Marinas
2015-03-04 11:50 ` Ard Biesheuvel
2015-03-04 12:29 ` Catalin Marinas
2015-03-04 12:43 ` Ard Biesheuvel
2015-03-04 14:12 ` Andrew Jones
2015-03-04 14:29 ` Catalin Marinas
2015-03-04 14:34 ` Peter Maydell
2015-03-04 17:03 ` Paolo Bonzini
2015-03-04 17:28 ` Catalin Marinas
2015-03-05 10:12 ` Paolo Bonzini
2015-03-05 11:04 ` Catalin Marinas
2015-03-05 11:52 ` Peter Maydell
2015-03-05 12:03 ` Catalin Marinas
2015-03-05 12:26 ` Paolo Bonzini
2015-03-05 14:58 ` Catalin Marinas
2015-03-05 17:43 ` Paolo Bonzini
2015-03-06 21:08 ` Mario Smarduch
2015-03-09 14:26 ` Andrew Jones
2015-03-09 15:33 ` Mario Smarduch
2015-03-05 19:13 ` Ard Biesheuvel
2015-03-06 20:33 ` Mario Smarduch
2015-02-19 18:44 ` Ard Biesheuvel
2015-03-03 17:34 ` Alexander Graf
2015-03-03 18:13 ` Laszlo Ersek
2015-03-03 20:58 ` Andrew Jones
2015-03-03 18:32 ` Catalin Marinas
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