[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [xen-unstable test] 57852: regressions - FAIL
On Mon, 2015-06-08 at 11:21 -0400, Konrad Rzeszutek Wilk wrote: > On Mon, Jun 08, 2015 at 03:47:22PM +0100, Ian Jackson wrote: > > Konrad Rzeszutek Wilk writes ("Re: [Xen-devel] [xen-unstable test] 57852: > > regressions - FAIL"): > > > Could it be an missing microcode update? I don't know if the OSSTest does > > > the ucode=scan or updates the microcode later? > > > > I think osstest's machines don't get microcode updates. I'm no expert > > on x86 microcode, but my understanding is: > > > > Microcode updates (i) have to be loaded dynamically at boot time and > > (ii) are regarded as a non-free package by Debian. > > > > We could arrange to install the non-free microcode package. I haven't > > looked into it but I would expect that to automatically arrange to > > load the microcode for native boots. It IMO ought to do the same for > > non-native boots but I wouldn't rely on that being the case. > > If Debian is using dracut It doesn't, it uses initramfs-tools. I'm not sure about Wheezy but from Jessie onwards installing the microcode packages adds hooks which makes initramfs-tools do the right thing. > it just requires adding in /etc/dracut.conf > early_microcode=yes > > and from there on any regenerated initramfs will have the required > microcode. Then 'ucode=scan' needs to be added on the Xen command line. This is still needed with initramfs-tools. There's also Debian bug #785187 (discussed on xen-devel) which stops ucode=scan from working, for a reason I've not had a changce to dig into yet. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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