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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-12-15 10:52:40 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-12-15 10:52:40 -0800 |
| commit | 42ebfc61cfcb13af3e638db1c497dcbde7abfed8 (patch) | |
| tree | a347967678d8f8a8a8ade7f37796ab62fb487308 | |
| parent | 55b02d2f4445ad625213817a1736bf2884d32547 (diff) | |
| parent | 63a741757d15320a25ebf5778f8651cce2ed0611 (diff) | |
| download | linux-42ebfc61cfcb13af3e638db1c497dcbde7abfed8.tar.bz2 | |
Merge branch 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/for-linus-fixes-3.2' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/swiotlb: Use page alignment for early buffer allocation.
xen: only limit memory map to maximum reservation for domain 0.
| -rw-r--r-- | arch/x86/xen/setup.c | 18 | ||||
| -rw-r--r-- | drivers/xen/swiotlb-xen.c | 4 |
2 files changed, 17 insertions, 5 deletions
diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c index 1093f80c162d..b2c7179fa263 100644 --- a/arch/x86/xen/setup.c +++ b/arch/x86/xen/setup.c @@ -173,9 +173,21 @@ static unsigned long __init xen_get_max_pages(void) domid_t domid = DOMID_SELF; int ret; - ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid); - if (ret > 0) - max_pages = ret; + /* + * For the initial domain we use the maximum reservation as + * the maximum page. + * + * For guest domains the current maximum reservation reflects + * the current maximum rather than the static maximum. In this + * case the e820 map provided to us will cover the static + * maximum region. + */ + if (xen_initial_domain()) { + ret = HYPERVISOR_memory_op(XENMEM_maximum_reservation, &domid); + if (ret > 0) + max_pages = ret; + } + return min(max_pages, MAX_DOMAIN_PAGES); } diff --git a/drivers/xen/swiotlb-xen.c b/drivers/xen/swiotlb-xen.c index 8e964b91c447..284798aaf8b1 100644 --- a/drivers/xen/swiotlb-xen.c +++ b/drivers/xen/swiotlb-xen.c @@ -166,7 +166,7 @@ retry: /* * Get IO TLB memory from any location. */ - xen_io_tlb_start = alloc_bootmem(bytes); + xen_io_tlb_start = alloc_bootmem_pages(PAGE_ALIGN(bytes)); if (!xen_io_tlb_start) { m = "Cannot allocate Xen-SWIOTLB buffer!\n"; goto error; @@ -179,7 +179,7 @@ retry: bytes, xen_io_tlb_nslabs); if (rc) { - free_bootmem(__pa(xen_io_tlb_start), bytes); + free_bootmem(__pa(xen_io_tlb_start), PAGE_ALIGN(bytes)); m = "Failed to get contiguous memory for DMA from Xen!\n"\ "You either: don't have the permissions, do not have"\ " enough free memory under 4GB, or the hypervisor memory"\ |