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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-12 09:09:41 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-08-12 09:09:41 -0700 |
| commit | 26f0cf91813bdc8e61595f8ad6660251e2ee9cf6 (patch) | |
| tree | db129d45fba03e3e59392410d0f35ba7d3e438e6 /mm | |
| parent | d862b13bc8cbab9692fbe0ef44c40d0488b81af1 (diff) | |
| parent | fe96eb404e33b59bb39f7050205f7c56c1c7d686 (diff) | |
Merge branch 'stable/xen-swiotlb-0.8.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/xen-swiotlb-0.8.6' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
x86: Detect whether we should use Xen SWIOTLB.
pci-swiotlb-xen: Add glue code to setup dma_ops utilizing xen_swiotlb_* functions.
swiotlb-xen: SWIOTLB library for Xen PV guest with PCI passthrough.
xen/mmu: inhibit vmap aliases rather than trying to clear them out
vmap: add flag to allow lazy unmap to be disabled at runtime
xen: Add xen_create_contiguous_region
xen: Rename the balloon lock
xen: Allow unprivileged Xen domains to create iomap pages
xen: use _PAGE_IOMAP in ioremap to do machine mappings
Fix up trivial conflicts (adding both xen swiotlb and xen pci platform
driver setup close to each other) in drivers/xen/{Kconfig,Makefile} and
include/xen/xen-ops.h
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmalloc.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/mm/vmalloc.c b/mm/vmalloc.c index 918c51335d6..6b8889da69a 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -31,6 +31,7 @@ #include <asm/tlbflush.h> #include <asm/shmparam.h> +bool vmap_lazy_unmap __read_mostly = true; /*** Page table manipulation functions ***/ @@ -502,6 +503,9 @@ static unsigned long lazy_max_pages(void) { unsigned int log; + if (!vmap_lazy_unmap) + return 0; + log = fls(num_online_cpus()); return log * (32UL * 1024 * 1024 / PAGE_SIZE); |