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[83.42.61.62]) by smtp.gmail.com with ESMTPSA id j10sm2674691wrw.96.2019.07.10.08.41.10 (version=TLS1_3 cipher=AEAD-AES128-GCM-SHA256 bits=128/128); Wed, 10 Jul 2019 08:41:10 -0700 (PDT) To: ddm , qemu-devel@nongnu.org, Richard Henderson , Eduardo Habkost , Paolo Bonzini References: From: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= Openpgp: id=89C1E78F601EE86C867495CBA2A3FD6EDEADC0DE; url=http://pgp.mit.edu/pks/lookup?op=get&search=0xA2A3FD6EDEADC0DE Message-ID: Date: Wed, 10 Jul 2019 17:41:09 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=gbk Content-Language: en-US Content-Transfer-Encoding: 7bit X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.85.221.50 Subject: Re: [Qemu-devel] Can not relocate APIC registers address from 0xFEE00000 to self-defined physical addr X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Cc'ing x86 ppl On 7/10/19 9:56 AM, ddm wrote: > hi guys, > > > I wrote a Small OS (based on linux0.11) support SMP, and it can run well on bochs, > Now i want to migrate it to Qemu, i found that when i use wrmsr command to relocate the APIC regsiters addr to a new physical address, > it can not work, i can not initial APIC timer to trigger timer interrupt by the new physical addr just i relocate, but when use rdmsr to get APIC base addr has been changed to the new physical address, it's strange. > In SMP env, if can not relocate APIC registers addr for each processor with different addr, it will result in conflict. > So, i want to know qemu4.0 whether support remaping APIC base address by wrmsr command? > if support, please tell me how to remap APIC base addr for each processor. > > > Thank you! >