From 523c178edf45fe04d61aa99ac496bc7494b99810 Mon Sep 17 00:00:00 2001 From: Chris Metcalf Date: Fri, 2 Aug 2013 16:18:58 -0400 Subject: [PATCH] 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 --- arch/tile/kernel/setup.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/arch/tile/kernel/setup.c b/arch/tile/kernel/setup.c index 68b5426..676e155 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 } -- 2.7.4