From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [RFC] ARM/ARM64: KVM: Implement KVM_FLUSH_DCACHE_GPA ioctl Date: Thu, 07 May 2015 19:01:36 +0200 Message-ID: <554B9A70.6020309@redhat.com> References: <1430817191-6231-1-git-send-email-j.fanguede@virtualopensystems.com> <20150506141249.GA6796@cbox> <20150507112027.GC25885@cbox> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 1BB2850CA8 for ; Thu, 7 May 2015 12:52:58 -0400 (EDT) Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id UdJB52pVt5sF for ; Thu, 7 May 2015 12:52:56 -0400 (EDT) Received: from mx1.redhat.com (mx1.redhat.com [209.132.183.28]) by mm01.cs.columbia.edu (Postfix) with ESMTPS id 7CC4950CA6 for ; Thu, 7 May 2015 12:52:56 -0400 (EDT) In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu To: =?UTF-8?B?SsOpcsOpbXkgRmFuZ3XDqGRl?= , Christoffer Dall Cc: list@lists.cs.columbia.edu, Overall , QEMU Developers , open@lists.cs.columbia.edu, VirtualOpenSystems Technical Team , "kvmarm@lists.cs.columbia.edu" , "linux-arm-kernel@lists.infradead.org" List-Id: kvmarm@lists.cs.columbia.edu CgpPbiAwNy8wNS8yMDE1IDE4OjU2LCBKw6lyw6lteSBGYW5ndcOoZGUgd3JvdGU6Cj4gVVNCIGRl dmljZXMgZmFpbCB3aXRoIGEgdGltZW91dCBlcnJvciwgYXMgaWYgdGhlIGNvbW11bmljYXRpb24g YmV0d2Vlbgo+IHRoZSBrZXJuZWwgYW5kIHRoZSBkZXZpY2VzIGZhaWwgYXQgYSBjZXJ0YWluIHBv aW50Ogo+IHVzYiAxLTE6IGRldmljZSBub3QgYWNjZXB0aW5nIGFkZHJlc3MgNSwgZXJyb3IgLTEx MAo+IHVzYiB1c2IxLXBvcnQxOiB1bmFibGUgdG8gZW51bWVyYXRlIFVTQiBkZXZpY2UKPiAKPiBl MTAwMCBmYWlscyB3aGVuIHRoZSB1c2Vyc3BhY2UgdHJpZXMgdG8gdXNlIGl0LCB3aXRoIHRoZXNl IHR5cGUgb2YKPiBrZXJuZWwgbWVzc2FnZXM6Cj4gZTEwMDAgMDAwMDowMDowMi4wIGV0aDA6IERl dGVjdGVkIFR4IFVuaXQgSGFuZwo+ICAgVHggUXVldWUgICAgICAgICAgICAgPDA+Cj4gICBUREgg ICAgICAgICAgICAgICAgICA8ZD4KPiAgIFREVCAgICAgICAgICAgICAgICAgIDxkPgo+ICAgbmV4 dF90b191c2UgICAgICAgICAgPGQ+Cj4gICBuZXh0X3RvX2NsZWFuICAgICAgICA8OT4KPiBidWZm ZXJfaW5mb1tuZXh0X3RvX2NsZWFuXQo+ICAgdGltZV9zdGFtcCAgICAgICAgICAgPGZmZmY5MzEx Pgo+ICAgbmV4dF90b193YXRjaCAgICAgICAgPGE+Cj4gICBqaWZmaWVzICAgICAgICAgICAgICA8 ZmZmZjk1NmE+Cj4gICBuZXh0X3RvX3dhdGNoLnN0YXR1cyA8MD4KCkNhbiB5b3UgZmluZCBvdXQg d2hhdCBtZW1vcnkgYXR0cmlidXRlcyB0aGUgZ3Vlc3QgaXMgdXNpbmcgZm9yIHRoZQptZW1vcnkt LS1hbmQgaWYgaXQncyB1bmNhY2hlZCwgd2h5PwoKUGFvbG8KX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18Ka3ZtYXJtIG1haWxpbmcgbGlzdAprdm1hcm1AbGlz dHMuY3MuY29sdW1iaWEuZWR1Cmh0dHBzOi8vbGlzdHMuY3MuY29sdW1iaWEuZWR1L21haWxtYW4v bGlzdGluZm8va3ZtYXJtCg== From mboxrd@z Thu Jan 1 00:00:00 1970 From: pbonzini@redhat.com (Paolo Bonzini) Date: Thu, 07 May 2015 19:01:36 +0200 Subject: [RFC] ARM/ARM64: KVM: Implement KVM_FLUSH_DCACHE_GPA ioctl In-Reply-To: References: <1430817191-6231-1-git-send-email-j.fanguede@virtualopensystems.com> <20150506141249.GA6796@cbox> <20150507112027.GC25885@cbox> Message-ID: <554B9A70.6020309@redhat.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 07/05/2015 18:56, J?r?my Fangu?de wrote: > USB devices fail with a timeout error, as if the communication between > the kernel and the devices fail at a certain point: > usb 1-1: device not accepting address 5, error -110 > usb usb1-port1: unable to enumerate USB device > > e1000 fails when the userspace tries to use it, with these type of > kernel messages: > e1000 0000:00:02.0 eth0: Detected Tx Unit Hang > Tx Queue <0> > TDH > TDT > next_to_use > next_to_clean <9> > buffer_info[next_to_clean] > time_stamp > next_to_watch > jiffies > next_to_watch.status <0> Can you find out what memory attributes the guest is using for the memory---and if it's uncached, why? Paolo From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53076) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YqPBe-0007Pq-As for qemu-devel@nongnu.org; Thu, 07 May 2015 13:02:18 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1YqPBa-0001qE-Tx for qemu-devel@nongnu.org; Thu, 07 May 2015 13:02:14 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52426) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1YqPBa-0001q2-L7 for qemu-devel@nongnu.org; Thu, 07 May 2015 13:02:10 -0400 Message-ID: <554B9A70.6020309@redhat.com> Date: Thu, 07 May 2015 19:01:36 +0200 From: Paolo Bonzini MIME-Version: 1.0 References: <1430817191-6231-1-git-send-email-j.fanguede@virtualopensystems.com> <20150506141249.GA6796@cbox> <20150507112027.GC25885@cbox> In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Qemu-devel] [RFC] ARM/ARM64: KVM: Implement KVM_FLUSH_DCACHE_GPA ioctl List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: =?UTF-8?B?SsOpcsOpbXkgRmFuZ3XDqGRl?= , Christoffer Dall Cc: QEMU Developers , VirtualOpenSystems Technical Team , "kvmarm@lists.cs.columbia.edu" , "linux-arm-kernel@lists.infradead.org" , Overall On 07/05/2015 18:56, J=C3=A9r=C3=A9my Fangu=C3=A8de wrote: > USB devices fail with a timeout error, as if the communication between > the kernel and the devices fail at a certain point: > usb 1-1: device not accepting address 5, error -110 > usb usb1-port1: unable to enumerate USB device >=20 > e1000 fails when the userspace tries to use it, with these type of > kernel messages: > e1000 0000:00:02.0 eth0: Detected Tx Unit Hang > Tx Queue <0> > TDH > TDT > next_to_use > next_to_clean <9> > buffer_info[next_to_clean] > time_stamp > next_to_watch > jiffies > next_to_watch.status <0> Can you find out what memory attributes the guest is using for the memory---and if it's uncached, why? Paolo