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| author | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-02 22:18:58 +0200 |
|---|---|---|
| committer | Chris Metcalf <cmetcalf@tilera.com> | 2013-08-05 22:12:51 +0200 |
| commit | 523c178edf45fe04d61aa99ac496bc7494b99810 (patch) | |
| tree | 88a5daec7b9b0da6ec0481e52732a3b8aa862a23 | |
| parent | tile PCI RC: cleanups for tilepro PCI RC (diff) | |
| download | linux-523c178edf45fe04d61aa99ac496bc7494b99810.tar.xz linux-523c178edf45fe04d61aa99ac496bc7494b99810.zip | |
tile PCI RC: tilepro conflict with PCI and RAM addresses
Fix a bug in the tilepro PCI resource allocation code that could make
the bootmem allocator unhappy if 4GB is installed on mshim 0.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
| -rw-r--r-- | arch/tile/kernel/setup.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c index 68b542677f6a..676e155a0d63 100644 --- a/arch/tile/kernel/setup.c +++ b/arch/tile/kernel/setup.c @@ -614,11 +614,12 @@ static void __init setup_bootmem_allocator_node(int i) /* * Throw away any memory aliased by the PCI region. */ - if (pci_reserve_start_pfn < end && pci_reserve_end_pfn > start) - reserve_bootmem(PFN_PHYS(pci_reserve_start_pfn), - PFN_PHYS(pci_reserve_end_pfn - - pci_reserve_start_pfn), + if (pci_reserve_start_pfn < end && pci_reserve_end_pfn > start) { + start = max(pci_reserve_start_pfn, start); + end = min(pci_reserve_end_pfn, end); + reserve_bootmem(PFN_PHYS(start), PFN_PHYS(end - start), BOOTMEM_EXCLUSIVE); + } #endif } |