Steven Chamberlain
2013-Jan-17 11:19 UTC
Re: Fwd: xenbusb_nop_confighook_cb timeout and cd issue
Hi, A little more background to this: An error was first seen on Debian''s i386 autobuilders when building Xen 4.1.2 (Debian package 4.1.2-7), but only after a switch from gcc-4.6 to gcc-4.7 which seems to be what prompted this. I''m not sure if it would have affected amd64 builds as we don''t have logs for those: https://buildd.debian.org/status/fetch.php?pkg=xen&arch=i386&ver=4.1.3-7&stamp=1355254810 :> gcc -O2 -fomit-frame-pointer -m32 -march=i686 -fno-strict-aliasing -std=gnu99 -Wall -Wstrict-prototypes -Wno-unused-value -Wdeclaration-after-statement -Wno-unused-but-set-variable -DNDEBUG -nostdinc -fno-builtin -fno-common -Wredundant-decls -iwithprefix include -Werror -Wno-pointer-arith -pipe -I/build/buildd-xen_4.1.3~rc1+hg-20120614.a9c0a89c08f2-1-i386-iqa4wM/xen-4.1.3~rc1+hg-20120614.a9c0a89c08f2/debian/build/build-hypervisor_i386_i386/xen/include -I/build/buildd-xen_4.1.3~rc1+hg-20120614.a9c0a89c08f2-1-i386-iqa4wM/xen-4.1.3~rc1+hg-20120614.a9c0a89c08f2/debian/build/build-hypervisor_i386_i386/xen/include/asm-x86/mach-generic -I/build/buildd-xen_4.1.3~rc1+hg-20120614.a9c0a89c08f2-1-i386-iqa4wM/xen-4.1.3~rc1+hg-20120614.a9c0a89c08f2/debian/build/build-hypervisor_i386_i386/xen/include/asm-x86/mach-default -msoft-float -fno-stack-protector -fno-exceptions -g -D__XEN__ -MMD -MF .i8259.o.d -c i8259.c -o i8259.o> i8259.c:66:9: error: initialization from incompatible pointer type [-Werror] > i8259.c:66:9: error: (near initialization for ''interrupt[0]'') [-Werror] > i8259.c:66:9: error: initialization from incompatible pointer type [-Werror] > i8259.c:66:9: error: (near initialization for ''interrupt[1]'') [-Werror] > i8259.c:66:9: error: initialization from incompatible pointer type [-Werror] > i8259.c:66:9: error: (near initialization for ''interrupt[2]'') [-Werror]In order to fix the build issue, this patch was written, and is still used when building Debian''s Xen 4.1.3 packages: http://patch-tracker.debian.org/patch/series/view/xen/4.1.3-7/xen-x86-interrupt-pointer-missmatch.diff Since October 2012 many FreeBSD (9.x) users reported an issue booting on Xenserver 6.1 / XCP 1.6 (incl. -BETA) but not affecting XCP 1.5: http://lists.freebsd.org/pipermail/freebsd-xen/2012-October/001374.html There were prior reports of identical symptoms triggered by guest CD-ROM drives without media, but this seems to be an unrelated bug. Egoitz, who has done a lot of work porting FreeBSD to XCP recently, found that Debian''s (Wheezy) Xen kernel didn''t have this bug; realised that the above patch fixes it. I experienced the bug when booting the FreeBSD 9.0 kernel on a NetBSD 6.0.1 dom0 after upgrading to pkgsrc-2012Q4 (Xen 4.1.3, from a binary package, unsure which compiler was used to build it). Likewise the patch fixed the issue for me; I used gcc 4.5.3. Regards, -- Steven Chamberlain steven@pyro.eu.org