linux-stable-rt/arch
Ian Campbell 86bbc2c235 xen: pin correct PGD on suspend
Impact: fix Xen guest boot failure

commit eefb47f6a1 ("xen: use
spin_lock_nest_lock when pinning a pagetable") changed xen_pgd_walk to
walk over mm->pgd rather than taking pgd as an argument.

This breaks xen_mm_(un)pin_all() because it makes init_mm.pgd readonly
instead of the pgd we are interested in and therefore the pin subsequently
fails.

(XEN) mm.c:2280:d15 Bad type (saw 00000000e8000001 != exp 0000000060000000) for mfn bc464 (pfn 21ca7)
(XEN) mm.c:2665:d15 Error while pinning mfn bc464

[   14.586913] 1 multicall(s) failed: cpu 0
[   14.586926] Pid: 14, comm: kstop/0 Not tainted 2.6.28-rc5-x86_32p-xenU-00172-gee2f6cc #200
[   14.586940] Call Trace:
[   14.586955]  [<c030c17a>] ? printk+0x18/0x1e
[   14.586972]  [<c0103df3>] xen_mc_flush+0x163/0x1d0
[   14.586986]  [<c0104bc1>] __xen_pgd_pin+0xa1/0x110
[   14.587000]  [<c015a330>] ? stop_cpu+0x0/0xf0
[   14.587015]  [<c0104d7b>] xen_mm_pin_all+0x4b/0x70
[   14.587029]  [<c022bcb9>] xen_suspend+0x39/0xe0
[   14.587042]  [<c015a330>] ? stop_cpu+0x0/0xf0
[   14.587054]  [<c015a3cd>] stop_cpu+0x9d/0xf0
[   14.587067]  [<c01417cd>] run_workqueue+0x8d/0x150
[   14.587080]  [<c030e4b3>] ? _spin_unlock_irqrestore+0x23/0x40
[   14.587094]  [<c014558a>] ? prepare_to_wait+0x3a/0x70
[   14.587107]  [<c0141918>] worker_thread+0x88/0xf0
[   14.587120]  [<c01453c0>] ? autoremove_wake_function+0x0/0x50
[   14.587133]  [<c0141890>] ? worker_thread+0x0/0xf0
[   14.587146]  [<c014509c>] kthread+0x3c/0x70
[   14.587157]  [<c0145060>] ? kthread+0x0/0x70
[   14.587170]  [<c0109d1b>] kernel_thread_helper+0x7/0x10
[   14.587181]   call  1/3: op=14 arg=[c0415000] result=0
[   14.587192]   call  2/3: op=14 arg=[e1ca2000] result=0
[   14.587204]   call  3/3: op=26 arg=[c1808860] result=-22

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2008-11-23 13:32:24 +01:00
..
alpha
arm Merge master.kernel.org:/home/rmk/linux-2.6-arm 2008-11-13 11:30:25 -08:00
avr32
blackfin Blackfin arch: fix a broken define in dma-mapping 2008-11-18 17:48:22 +08:00
cris
frv
h8300
ia64 [IA64] xen: fix xen_get_eflags. 2008-11-20 13:43:01 -08:00
m32r
m68k m68k: Fix off-by-one in m68k_setup_user_interrupt() 2008-11-15 11:36:06 -08:00
m68knommu
mips MIPS: csrc-r4k: Fix declaration depending on the wrong CONFIG_ symbol. 2008-11-20 19:42:33 +00:00
mn10300 MN10300: Don't do misalignment handling for userspace 2008-11-12 10:41:18 -08:00
parisc parisc: fix bug in compat_arch_ptrace 2008-11-20 13:09:17 -08:00
powerpc powerpc: Update desktop/server defconfigs 2008-11-11 19:42:30 +11:00
s390 [S390] fix s390x_newuname 2008-11-14 18:18:55 +01:00
sh serial: sh-sci: Reorder the SCxTDR write after the TDxE clear. 2008-11-13 17:46:06 +09:00
sparc sparc64: wire up accept4() 2008-11-19 18:49:57 -08:00
sparc64 sparc64: wire up accept4() 2008-11-19 18:49:57 -08:00
um
x86 xen: pin correct PGD on suspend 2008-11-23 13:32:24 +01:00
xtensa
.gitignore
Kconfig