From mboxrd@z Thu Jan 1 00:00:00 1970 From: Segher Boessenkool Subject: Re: [PATCH 10/13] kvm/powerpc: Add support for Book3S processors in hypervisor mode Date: Wed, 1 Jun 2011 00:34:43 +0200 Message-ID: References: <20110511103443.GA2837@brick.ozlabs.ibm.com> <20110511104456.GK2837@brick.ozlabs.ibm.com> <20110516055809.GA3590@drongo> <20110527103334.GA4236@brick.ozlabs.ibm.com> <6A1CA2C8-8032-4D67-9C14-4ABD81ABCDD7@suse.de> <10cc079a31947ec4b6d39f30f2ac50f2@kernel.crashing.org> Mime-Version: 1.0 (Apple Message framework v624) Content-Type: text/plain; charset=US-ASCII; format=flowed Content-Transfer-Encoding: 7bit Cc: Paul Mackerras , KVM list , Alexander Graf , Linuxppc-dev , kvm-ppc@vger.kernel.org To: Jimi Xenidis Return-path: In-Reply-To: Sender: kvm-ppc-owner@vger.kernel.org List-Id: kvm.vger.kernel.org >>> Sure, but that shouldn't happen with HDEC during the odd 50 >>> instructions that it takes to enter the guest :) >> >> It's more like 500 insns, including some ptesync, so lots of cycles >> too. > > I don't think its actually that bad. There's a loop of 128 iterations of 3 insns. I'm not saying it is actually bad, just that that 50 is slightly off ;-) Segher From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from gate.crashing.org (gate.crashing.org [63.228.1.57]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by ozlabs.org (Postfix) with ESMTPS id A577AB6F76 for ; Wed, 1 Jun 2011 08:33:07 +1000 (EST) In-Reply-To: References: <20110511103443.GA2837@brick.ozlabs.ibm.com> <20110511104456.GK2837@brick.ozlabs.ibm.com> <20110516055809.GA3590@drongo> <20110527103334.GA4236@brick.ozlabs.ibm.com> <6A1CA2C8-8032-4D67-9C14-4ABD81ABCDD7@suse.de> <10cc079a31947ec4b6d39f30f2ac50f2@kernel.crashing.org> Mime-Version: 1.0 (Apple Message framework v624) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: From: Segher Boessenkool Subject: Re: [PATCH 10/13] kvm/powerpc: Add support for Book3S processors in hypervisor mode Date: Wed, 1 Jun 2011 00:34:43 +0200 To: Jimi Xenidis Cc: kvm-ppc@vger.kernel.org, Linuxppc-dev , Paul Mackerras , Alexander Graf , KVM list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , >>> Sure, but that shouldn't happen with HDEC during the odd 50 >>> instructions that it takes to enter the guest :) >> >> It's more like 500 insns, including some ptesync, so lots of cycles >> too. > > I don't think its actually that bad. There's a loop of 128 iterations of 3 insns. I'm not saying it is actually bad, just that that 50 is slightly off ;-) Segher From mboxrd@z Thu Jan 1 00:00:00 1970 From: Segher Boessenkool Date: Tue, 31 May 2011 22:34:43 +0000 Subject: Re: [PATCH 10/13] kvm/powerpc: Add support for Book3S processors in hypervisor mode Message-Id: List-Id: References: <20110511103443.GA2837@brick.ozlabs.ibm.com> <20110511104456.GK2837@brick.ozlabs.ibm.com> <20110516055809.GA3590@drongo> <20110527103334.GA4236@brick.ozlabs.ibm.com> <6A1CA2C8-8032-4D67-9C14-4ABD81ABCDD7@suse.de> <10cc079a31947ec4b6d39f30f2ac50f2@kernel.crashing.org> In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Jimi Xenidis Cc: Paul Mackerras , KVM list , Alexander Graf , Linuxppc-dev , kvm-ppc@vger.kernel.org >>> Sure, but that shouldn't happen with HDEC during the odd 50 >>> instructions that it takes to enter the guest :) >> >> It's more like 500 insns, including some ptesync, so lots of cycles >> too. > > I don't think its actually that bad. There's a loop of 128 iterations of 3 insns. I'm not saying it is actually bad, just that that 50 is slightly off ;-) Segher