Messages in this thread | | | Date | Thu, 24 May 2012 18:26:05 +0200 | From | Borislav Petkov <> | Subject | Re: [PATCH 1/3] xen/mce: Add mcelog support for Xen platform (v2) |
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On Thu, May 24, 2012 at 04:15:02PM +0000, Liu, Jinsong wrote: > The reason is, if we do so, it would be covered by native misc_register(&mce_chrdev_device) later when native kernel init (xen init first and then start native kernel). > Under such case, if linux running under xen platform, /dev/mcelog point to vcpu, that's pointless since it cannot get any mcelog from physical cpu (which owned by xen). > > Yes, we can use another misc device like /dev/xen-mcelog, w/ another device minor like 226, but that's not good for userspace mcelog tools. As far as I know, Novell mcelog use unified /dev/mcelog interface for linux running under either bare metal or xen platform.
Maybe create a symlink in /dev/mcelog pointing to /dev/xen-mcelog?
That should solve it.
> This patch just do redirection at xen code path, and that would not > hurt anything to native kernel.
My concern is that if we remove /dev/mcelog one day, xen people will cry.
-- Regards/Gruss, Boris.
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