OpenCloudOS-Kernel/arch/x86/xen
Konrad Rzeszutek Wilk c761779877 xen/mmu: WARN_ON when racing to swap middle leaf.
The initial bootup code uses set_phys_to_machine quite a lot, and after
bootup it would be used by the balloon driver. The balloon driver does have
mutex lock so this should not be necessary - but just in case, add
a WARN_ON if we do hit this scenario. If we do fail this, it is OK
to continue as there is a backup mechanism (VM_IO) that can bypass
the P2M and still set the _PAGE_IOMAP flags.

[v2: Change from WARN to BUG_ON]
[v3: Rebased on top of xen->p2m code split]
[v4: Change from BUG_ON to WARN]
Reviewed-by: Ian Campbell <Ian.Campbell@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
2011-03-14 11:17:09 -04:00
..
Kconfig Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 2010-10-28 17:11:17 -07:00
Makefile xen: move p2m handling to separate file 2011-01-11 14:31:07 -05:00
debugfs.c llseek: automatically add .llseek fop 2010-10-15 15:53:27 +02:00
debugfs.h xen: add debugfs support 2008-08-21 13:52:58 +02:00
enlighten.c lockdep: Move early boot local IRQ enable/disable status to init/main.c 2011-01-20 13:32:33 +01:00
grant-table.c xen: make grant table arch portable 2008-04-24 23:57:32 +02:00
irq.c xen: fix non-ANSI function warning in irq.c 2011-01-20 14:52:13 -05:00
mmu.c xen/mmu: Set _PAGE_IOMAP if PFN is an identity PFN. 2011-03-14 11:17:08 -04:00
mmu.h xen: make install_p2mtop_page() static 2010-10-22 12:57:23 -07:00
multicalls.c x86, xen: do multicall callbacks with interrupts disabled 2009-02-16 08:56:41 +01:00
multicalls.h xen: Use this_cpu_ops 2010-12-17 15:07:19 +01:00
p2m.c xen/mmu: WARN_ON when racing to swap middle leaf. 2011-03-14 11:17:09 -04:00
pci-swiotlb-xen.c Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 2010-10-28 17:11:17 -07:00
platform-pci-unplug.c xen: unplug the emulated devices at resume time 2010-12-02 14:40:53 +00:00
setup.c xen: Mark all initial reserved pages for the balloon as INVALID_P2M_ENTRY. 2011-03-03 11:52:48 -05:00
smp.c Merge branch 'stable/xen-pcifront-0.8.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen 2010-10-28 17:11:17 -07:00
spinlock.c xen: Use this_cpu_ops 2010-12-17 15:07:19 +01:00
suspend.c xen: unplug the emulated devices at resume time 2010-12-02 14:40:53 +00:00
time.c Merge branch 'this_cpu_ops' into for-2.6.38 2010-12-17 15:16:46 +01:00
vdso.h i386: move xen 2007-10-11 11:16:51 +02:00
xen-asm.S x86: style cleanups for xen assemblies 2009-02-05 20:25:41 +01:00
xen-asm.h xen: make direct versions of irq_enable/disable/save/restore to common code 2009-02-04 16:59:04 -08:00
xen-asm_32.S percpu: remove per_cpu__ prefix. 2009-10-29 22:34:15 +09:00
xen-asm_64.S xen: use iret for return from 64b kernel to 32b usermode 2009-12-03 11:14:54 -08:00
xen-head.S x86: use _types.h headers in asm where available 2009-02-13 11:35:01 -08:00
xen-ops.h xen: unplug the emulated devices at resume time 2010-12-02 14:40:53 +00:00