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Date: Thu, 9 Aug 2012 16:23:07 -0500 From: Jacob Shin <jacob.shin@....com> To: X86-ML <x86@...nel.org> CC: LKML <linux-kernel@...r.kernel.org>, Yinghai Lu <yinghai@...nel.org>, "H. Peter Anvin" <hpa@...or.com>, Andreas Herrmann <andreas.herrmann3@....com>, Jacob Shin <jacob.shin@....com> Subject: [PATCH 3/5] x86: Keep track of direct mapped pfn ranges Update later calls to init_memory_mapping to keep track of direct mapped pfn ranges. Signed-off-by: Jacob Shin <jacob.shin@....com> --- arch/x86/kernel/amd_gart_64.c | 4 +++- arch/x86/mm/init_64.c | 3 +-- arch/x86/platform/efi/efi_64.c | 2 ++ 3 files changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/x86/kernel/amd_gart_64.c b/arch/x86/kernel/amd_gart_64.c index e663112..5ac26b9 100644 --- a/arch/x86/kernel/amd_gart_64.c +++ b/arch/x86/kernel/amd_gart_64.c @@ -770,7 +770,9 @@ int __init gart_iommu_init(void) if (end_pfn > max_low_pfn_mapped) { start_pfn = (aper_base>>PAGE_SHIFT); - init_memory_mapping(start_pfn<<PAGE_SHIFT, end_pfn<<PAGE_SHIFT); + end_pfn = init_memory_mapping(start_pfn<<PAGE_SHIFT, + end_pfn<<PAGE_SHIFT); + add_pfn_range_mapped(start_pfn, end_pfn); } pr_info("PCI-DMA: using GART IOMMU.\n"); diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index 2b6b4a3..cbed965 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -662,8 +662,7 @@ int arch_add_memory(int nid, u64 start, u64 size) int ret; last_mapped_pfn = init_memory_mapping(start, start + size); - if (last_mapped_pfn > max_pfn_mapped) - max_pfn_mapped = last_mapped_pfn; + add_pfn_range_mapped(start_pfn, last_mapped_pfn); ret = __add_pages(nid, zone, start_pfn, nr_pages); WARN_ON_ONCE(ret); diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c index ac3aa54..e822c89 100644 --- a/arch/x86/platform/efi/efi_64.c +++ b/arch/x86/platform/efi/efi_64.c @@ -90,6 +90,8 @@ void __iomem *__init efi_ioremap(unsigned long phys_addr, unsigned long size, return ioremap(phys_addr, size); last_map_pfn = init_memory_mapping(phys_addr, phys_addr + size); + add_pfn_range_mapped(phys_addr >> PAGE_SHIFT, last_map_pfn); + if ((last_map_pfn << PAGE_SHIFT) < phys_addr + size) { unsigned long top = last_map_pfn << PAGE_SHIFT; efi_ioremap(top, size - (top - phys_addr), type); -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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