From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Vrabel Subject: Re: hvc console not working on 4.4.0 guest Date: Tue, 22 Dec 2015 10:01:28 +0000 Message-ID: <56791F78.7010503@citrix.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: M A Young , xen-devel@lists.xen.org List-Id: xen-devel@lists.xenproject.org On 21/12/15 22:57, M A Young wrote: > I am testing Fedora rawhide in a xen pv guest and I get the error > [ 9.809550] genirq: Flags mismatch irq 8. 00000000 (hvc_console) vs. > 00000000 (rtc0) > [ 9.809714] hvc_open: request_irq failed with rc -16. > during the boot and the hvc console doesn't respond when the boot > finishes. I have noticed this I think since the update through various > linux 4.4.0 kernels up to the current 4.4.0-0.rc5.git3.1.fc24.x86_64 one. > I do get an hvc console if I use the Fedora 23 kernel 4.2.6-300.fc23.x86_64 > from before the update. > Is this a known problem? I have attached the boot log up to the above > error. Fixed by "x86: Xen PV guests don't have the rtc_cmos platform device" which hasn't yet been applied. As a workaround try using a 2 VCPU guest. David