linux-kernel - [PATCH 2/4] x86: clean up mm/init

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

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <475DA7BF.4090200@goop.org>
Date:	Mon, 10 Dec 2007 12:55:27 -0800
From:	Jeremy Fitzhardinge <jeremy@...p.org>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Glauber de Oliveira Costa <glommer@...il.com>
Subject: [PATCH 2/4] x86: clean up mm/init_32.c

Some code reformatting in init_32.c.  No functional change.

Signed-off-by: Jeremy Fitzhardinge <Jeremy.Fitzhardinge@...rix.com>

---
 arch/x86/mm/init_32.c |   31 +++++++++++++++++++++----------
 1 file changed, 21 insertions(+), 10 deletions(-)

===================================================================
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -165,16 +165,25 @@ static void __init kernel_physical_mappi
 		pmd = one_md_table_init(pgd);
 		if (pfn >= max_low_pfn)
 			continue;
-		for (pmd_idx = 0; pmd_idx < PTRS_PER_PMD && pfn < max_low_pfn; pmd++, pmd_idx++) {
+		for (pmd_idx = 0;
+		     pmd_idx < PTRS_PER_PMD && pfn < max_low_pfn;
+		     pmd++, pmd_idx++) {
 			unsigned int address = pfn * PAGE_SIZE + PAGE_OFFSET;
 
-			/* Map with big pages if possible, otherwise create normal page tables. */
+			/* Map with big pages if possible, otherwise
+			   create normal page tables. */
 			if (cpu_has_pse) {
-				unsigned int address2 = (pfn + PTRS_PER_PTE - 1) * PAGE_SIZE + PAGE_OFFSET + PAGE_SIZE-1;
-				if (is_kernel_text(address) || is_kernel_text(address2))
-					set_pmd(pmd, pfn_pmd(pfn, PAGE_KERNEL_LARGE_EXEC));
-				else
-					set_pmd(pmd, pfn_pmd(pfn, PAGE_KERNEL_LARGE));
+				unsigned int address2;
+				pgprot_t prot = PAGE_KERNEL_LARGE;
+
+				address2 = (pfn + PTRS_PER_PTE - 1) * PAGE_SIZE +
+					PAGE_OFFSET + PAGE_SIZE-1;
+
+				if (is_kernel_text(address) ||
+				    is_kernel_text(address2))
+					prot = PAGE_KERNEL_LARGE_EXEC;
+
+				set_pmd(pmd, pfn_pmd(pfn, prot));
 
 				pfn += PTRS_PER_PTE;
 			} else {
@@ -183,10 +192,12 @@ static void __init kernel_physical_mappi
 				for (pte_ofs = 0;
 				     pte_ofs < PTRS_PER_PTE && pfn < max_low_pfn;
 				     pte++, pfn++, pte_ofs++, address += PAGE_SIZE) {
+					pgprot_t prot = PAGE_KERNEL;
+
 					if (is_kernel_text(address))
-						set_pte(pte, pfn_pte(pfn, PAGE_KERNEL_EXEC));
-					else
-						set_pte(pte, pfn_pte(pfn, PAGE_KERNEL));
+						prot = PAGE_KERNEL_EXEC;
+
+					set_pte(pte, pfn_pte(pfn, prot));
 				}
 			}
 		}


--
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/