Commit-ID: 1f2ff682ac951ed82cc043cf140d2851084512df Gitweb: http://git.kernel.org/tip/1f2ff682ac951ed82cc043cf140d2851084512df Author: Yinghai Lu <ying...@kernel.org> AuthorDate: Mon, 22 Oct 2012 16:35:18 -0700 Committer: H. Peter Anvin <h...@linux.intel.com> CommitDate: Wed, 24 Oct 2012 11:52:36 -0700
x86, mm: Use memblock memory loop instead of e820_RAM We need to handle E820_RAM and E820_RESERVED_KERNEL at the same time. Also memblock has page aligned range for ram, so we could avoid mapping partial pages. Signed-off-by: Yinghai Lu <ying...@kernel.org> Link: http://lkml.kernel.org/r/cae9fiqvzirvabmfyrfxmmwechbksicqehz4vawuv0xfck51...@mail.gmail.com Acked-by: Jacob Shin <jacob.s...@amd.com> Signed-off-by: H. Peter Anvin <h...@linux.intel.com> Cc: <sta...@vger.kernel.org> --- arch/x86/kernel/setup.c | 15 ++++++++------- 1 files changed, 8 insertions(+), 7 deletions(-) diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 468e98d..5d888af 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -921,18 +921,19 @@ void __init setup_arch(char **cmdline_p) #ifdef CONFIG_X86_64 if (max_pfn > max_low_pfn) { int i; - for (i = 0; i < e820.nr_map; i++) { - struct e820entry *ei = &e820.map[i]; + unsigned long start, end; + unsigned long start_pfn, end_pfn; - if (ei->addr + ei->size <= 1UL << 32) - continue; + for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, + NULL) { - if (ei->type == E820_RESERVED) + end = PFN_PHYS(end_pfn); + if (end <= (1UL<<32)) continue; + start = PFN_PHYS(start_pfn); max_pfn_mapped = init_memory_mapping( - ei->addr < 1UL << 32 ? 1UL << 32 : ei->addr, - ei->addr + ei->size); + max((1UL<<32), start), end); } /* can we preseve max_low_pfn ?*/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
