From: joel.schopp@amd•com (Joel Schopp)
To: linux-arm-kernel@lists•infradead.org
Subject: HYP panic with 3.16-rc5, arm64 + 64k pages
Date: Thu, 17 Jul 2014 12:31:26 -0500 [thread overview]
Message-ID: <53C8086E.5060903@amd.com> (raw)
In-Reply-To: <20140717152808.GO21153@arm.com>
On 07/17/2014 10:28 AM, Will Deacon wrote:
> Hi all,
>
> If I try to spawn a kvm guest with kvmtool (not tried qemu) with a vanilla
> 3.16-rc5 kernel (same for host and guest) using 64k pages, I'm greeted by:
>
> Kernel panic - not syncing: HYP panic:
> PS:800002c5 PC:fffffe000042bd10 ESR:00000000bf000000
> FAR: (null) HPFAR: (null) PAR: (null)
> VCPU:0000020979e20000
>
> CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-rc5 #4
> Call trace:
> [<fffffe000009642c>] dump_backtrace+0x0/0x130
>
> on the host. The problem happens every time on Juno and the fastmodel.
>
> Any ideas? Is anybody else seeing this problem? The limited guest output
> is below.
I'm running a small patch series (nothing that should affect what you
are seeing) on top of 3.16-rc5 (both host and guest) with 64K pages on
an arm64 SOC. I'm not seeing any problems.
>
> Will
>
> --->8
>
> Initializing cgroup subsys cpu
> Linux version 3.16.0-rc5 (will at edgewater-inn) (gcc version 4.9.0 20140214 (experimental) (aarch64-trunk.530) ) #1 SMP PREEMPT Thu Jul 17 16:19:36 BST 2014
> CPU: AArch64 Processor [410fd070] revision 0
> Early serial console at I/O port 0x0 (options '')
> bootconsole [uart0] enabled
> efi: Getting parameters from FDT:
> efi: Can't find System Table in device tree!
> cma: CMA: failed to reserve 512 MiB
> psci: probing for conduit method from DT.
> psci: Using PSCI v0.1 Function IDs from DT
> PERCPU: Embedded 1 pages/cpu @fffffe0023e80000 s13120 r8192 d44224 u65536
> Built 1 zonelists in Zone order, mobility grouping off. Total pages: 9208
> Kernel command line: console=hvc0,38400 earlycon=uart8250,0x3f8 root=/dev/root rw rootflags=rw,trans=virtio,version=9p2000.L rootfstype=9p init=/virt/init ip=dhcp
> PID hash table entries: 4096 (order: -1, 32768 bytes)
> Dentry cache hash table entries: 131072 (order: 4, 1048576 bytes)
> Inode-cache hash table entries: 65536 (order: 3, 524288 bytes)
> Memory: 579264K/589824K available (4359K kernel code, 455K rwdata, 1536K rodata, 332K init, 280K bss, 10560K reserved)
> Virtual kernel memory layout:
> vmalloc : 0xfffffc0000000000 - 0xfffffdfbffff0000 (2080767 MB)
> vmemmap : 0xfffffdfc001c0000 - 0xfffffdfc0023e000 ( 0 MB)
> modules : 0xfffffdfffc000000 - 0xfffffe0000000000 ( 64 MB)
> memory : 0xfffffe0000000000 - 0xfffffe0024000000 ( 576 MB)
> .init : 0xfffffe0000660000 - 0xfffffe00006b3340 ( 333 kB)
> .text : 0xfffffe0000080000 - 0xfffffe0000651f94 ( 5960 kB)
> .data : 0xfffffe00006c0000 - 0xfffffe0000731ca8 ( 456 kB)
> SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
> Preemptible hierarchical RCU implementation.
> RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
> RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
> NR_IRQS:64 nr_irqs:64 0
Not a lot to go on there. If you get desperate you can configure FTRACE
and pass "ftrace=function ftrace_dump_on_oops" as additional additional
kernel command line arguments. If you get really desperate you can do
the same on the host. Just beware the output is really long.
next prev parent reply other threads:[~2014-07-17 17:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-17 15:28 HYP panic with 3.16-rc5, arm64 + 64k pages Will Deacon
2014-07-17 17:31 ` Joel Schopp [this message]
2014-07-18 8:40 ` Will Deacon
2014-07-18 11:13 ` Will Deacon
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