[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH for-xen-4.5 v3 00/16] xen: Break multiboot (v1) dependency and add multiboot2 support
>>> On 10.10.14 at 13:07, <daniel.kiper@xxxxxxxxxx> wrote: > On Fri, Oct 10, 2014 at 09:23:55AM +0100, Jan Beulich wrote: >> >>> On 08.10.14 at 19:52, <daniel.kiper@xxxxxxxxxx> wrote: >> > Patch #13 reveals a bug which probably was introduced between commit >> > 3e2331d271cc0882e4013c8f20398c46c35f90a1 (VT-d: suppress UR signaling for >> > further desktop chipsets) and 61fdda7acf3de11f3d50d50e5b4f4ecfac7e0d04 >> > (x86/HVM: properly bound x2APIC MSR range). Xen crashes at video_endboot() >> > because earlier scrub process wipes vga_console_info data (sic!). So, >> > it means that at least page containing this structure was freed mistakenly >> > somewhere. Interestingly this issue appears on legacy BIOS machines only. >> > EFI platforms work as usual. It is possible to workaround this bug by >> > passing no-bootscrub to xen.gz. >> >> Giving a little more detail on how exactly things crash would be rather >> useful to make suggestions. Or if you intend to figure this out all by >> yourself, then I think you would have better done so before posting >> this series. > > I am attaching console log. Xen crashes at > xen/drivers/video/vga.c:video_endboot():175. > > switch ( boot_info->vga_console_info.video_type ) Without your changes this line is switch ( vga_console_info.video_type ) with the variable being a global, non-_initdata one. That way it just can't go away unless we have some sort of memory corruption. Therefore I would rather think that the problem is inside your series. Jan _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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