diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-29 11:36:52 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-03-29 11:36:52 -0700 |
| commit | 90f1e7481eebfd47e7dbf7c8c0cbfe31e025e031 (patch) | |
| tree | 5c968e99d6f3f9ef756b9d399b5f9e8669ed4f5a /arch/x86 | |
| parent | d6ae0c63f09cc443aa14f8b966aa3e7b2229360b (diff) | |
| parent | e240ae4aad9c5c0da189cb6c956cca58abd428d0 (diff) | |
| download | linux-90f1e7481eebfd47e7dbf7c8c0cbfe31e025e031.tar.bz2 | |
Merge branch 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
* 'stable/bug-fixes-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen: Use new irq_move functions
xen: Convert genirq namespace
xen: fix p2m section mismatches
xen/p2m: Allocate p2m tracking pages on override
xen-gntdev: unlock on error path in gntdev_mmap()
xen-gntdev: return -EFAULT on copy_to_user failure
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/xen/p2m.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/arch/x86/xen/p2m.c b/arch/x86/xen/p2m.c index 215a3ce61068..141eb0de8b06 100644 --- a/arch/x86/xen/p2m.c +++ b/arch/x86/xen/p2m.c @@ -497,7 +497,7 @@ static bool alloc_p2m(unsigned long pfn) return true; } -bool __early_alloc_p2m(unsigned long pfn) +static bool __init __early_alloc_p2m(unsigned long pfn) { unsigned topidx, mididx, idx; @@ -530,7 +530,7 @@ bool __early_alloc_p2m(unsigned long pfn) } return idx != 0; } -unsigned long set_phys_range_identity(unsigned long pfn_s, +unsigned long __init set_phys_range_identity(unsigned long pfn_s, unsigned long pfn_e) { unsigned long pfn; @@ -671,7 +671,9 @@ int m2p_add_override(unsigned long mfn, struct page *page) page->private = mfn; page->index = pfn_to_mfn(pfn); - __set_phys_to_machine(pfn, FOREIGN_FRAME(mfn)); + if (unlikely(!set_phys_to_machine(pfn, FOREIGN_FRAME(mfn)))) + return -ENOMEM; + if (!PageHighMem(page)) /* Just zap old mapping for now */ pte_clear(&init_mm, address, ptep); @@ -709,7 +711,7 @@ int m2p_remove_override(struct page *page) spin_lock_irqsave(&m2p_override_lock, flags); list_del(&page->lru); spin_unlock_irqrestore(&m2p_override_lock, flags); - __set_phys_to_machine(pfn, page->index); + set_phys_to_machine(pfn, page->index); if (!PageHighMem(page)) set_pte_at(&init_mm, address, ptep, |