lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 28 Nov 2012 13:47:52 -0800 From: Yinghai Lu <yinghai@...nel.org> To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>, "H. Peter Anvin" <hpa@...or.com>, Jacob Shin <jacob.shin@....com> Cc: Andrew Morton <akpm@...ux-foundation.org>, Stefano Stabellini <stefano.stabellini@...citrix.com>, Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>, linux-kernel@...r.kernel.org, Yinghai Lu <yinghai@...nel.org> Subject: [PATCH v9 41/46] x86, mm: Use clamp_t() in init_range_memory_mapping save some lines, and make code more readable. Signed-off-by: Yinghai Lu <yinghai@...nel.org> Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@...cle.com> --- arch/x86/mm/init.c | 21 +++++---------------- 1 files changed, 5 insertions(+), 16 deletions(-) diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c index 1b8e80b..c8daa79 100644 --- a/arch/x86/mm/init.c +++ b/arch/x86/mm/init.c @@ -367,31 +367,20 @@ unsigned long __init_refok init_memory_mapping(unsigned long start, * will be mapped in init_range_memory_mapping. */ static unsigned long __init init_range_memory_mapping( - unsigned long range_start, - unsigned long range_end) + unsigned long r_start, + unsigned long r_end) { unsigned long start_pfn, end_pfn; unsigned long mapped_ram_size = 0; int i; for_each_mem_pfn_range(i, MAX_NUMNODES, &start_pfn, &end_pfn, NULL) { - u64 start = (u64)start_pfn << PAGE_SHIFT; - u64 end = (u64)end_pfn << PAGE_SHIFT; - - if (end <= range_start) - continue; - - if (start < range_start) - start = range_start; - - if (start >= range_end) + u64 start = clamp_val(PFN_PHYS(start_pfn), r_start, r_end); + u64 end = clamp_val(PFN_PHYS(end_pfn), r_start, r_end); + if (start >= end) continue; - if (end > range_end) - end = range_end; - init_memory_mapping(start, end); - mapped_ram_size += end - start; } -- 1.7.7 -- 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/
Powered by blists - more mailing lists