On Tue, 15 Jan 2013, Yinghai Lu wrote: > On Tue, Jan 15, 2013 at 8:43 AM, Yinghai Lu <ying...@kernel.org> wrote: > > On Tue, Jan 15, 2013 at 4:19 AM, Stefano Stabellini > > <stefano.stabell...@eu.citrix.com> wrote: > >>> could be found at: > >>> > >>> > >>> git://git.kernel.org/pub/scm/linux/kernel/git/yinghai/linux-yinghai.git > >>> for-x86-boot > >> > >> I tried to boot this kernel as PV guest with 2GB of RAM, but > >> unfortunately it crashes early on at boot (earlyprintk=xen log > >> appended). > >> > >> > >> > >> mapping kernel into physical memory > >> about to get started... > >> [ 0.000000] Initializing cgroup subsys cpuset > >> [ 0.000000] Linux version 3.8.0-rc3+ (sstabellini@st22) (gcc version > >> 4.4.5 (Debian 4.4.5-8) ) #4 SMP Tue Jan 15 12:11:59 UTC 2013 > >> [ 0.000000] Command line: root=/dev/xvda1 rw loglevel=9 debug > >> console=hvc0 earlyprintk=xen > >> [ 0.000000] ACPI in unprivileged domain disabled > >> [ 0.000000] e820: BIOS-provided physical RAM map: > >> [ 0.000000] Xen: [mem 0x0000000000000000-0x000000000009ffff] usable > >> [ 0.000000] Xen: [mem 0x00000000000a0000-0x00000000000fffff] reserved > >> [ 0.000000] Xen: [mem 0x0000000000100000-0x000000007fffffff] usable > >> [ 0.000000] bootconsole [xenboot0] enabled > >> [ 0.000000] NX (Execute Disable) protection: active > >> [ 0.000000] DMI not present or invalid. > >> [ 0.000000] e820: update [mem 0x00000000-0x0000ffff] usable ==> reserved > >> [ 0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable > >> [ 0.000000] No AGP bridge found > >> [ 0.000000] e820: last_pfn = 0x80000 max_arch_pfn = 0x400000000 > >> [ 0.000000] Base memory trampoline at [ffff88000009a000] 9a000 size > >> 24576 > >> [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff] > >> [ 0.000000] [mem 0x00000000-0x000fffff] page 4k > >> [ 0.000000] init_memory_mapping: [mem 0x7fe00000-0x7fffffff] > >> [ 0.000000] [mem 0x7fe00000-0x7fffffff] page 4k > >> [ 0.000000] BRK [0x023b8000, 0x023b8fff] PGTABLE > >> [ 0.000000] BRK [0x023b9000, 0x023b9fff] PGTABLE > >> [ 0.000000] init_memory_mapping: [mem 0x7c000000-0x7fdfffff] > >> [ 0.000000] [mem 0x7c000000-0x7fdfffff] page 4k > >> [ 0.000000] BRK [0x023ba000, 0x023bafff] PGTABLE > >> [ 0.000000] BRK [0x023bb000, 0x023bbfff] PGTABLE > >> [ 0.000000] BRK [0x023bc000, 0x023bcfff] PGTABLE > >> [ 0.000000] init_memory_mapping: [mem 0x00100000-0x7bffffff] > >> [ 0.000000] [mem 0x00100000-0x7bffffff] page 4k > >> (XEN) d15:v0: unhandled page fault (ec=0000) > >> (XEN) Pagetable walk from ffffea0000080330: > >> (XEN) L4[0x1d4] = 0000000000000000 ffffffffffffffff > >> (XEN) domain_crash_sync called from entry.S > >> (XEN) Domain 15 (vcpu#0) crashed on cpu#3: > >> (XEN) ----[ Xen-4.3-unstable x86_64 debug=y Not tainted ]---- > > > > ok, i think i know the cause for now, will check if there is good way > > to fix it. > > Can you please test attached patch?
Yes, this patch seems to fix the problem. I have also run the kernel with this patch as dom0 and PV domU with various memory configurations up to 8GB, and I have no errors to report. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
