linux-kernel - [Patch] i386 bootioremap / kexec fix

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: Windows password security audit tool. GUI, reports in PDF.

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

Date:	Thu, 21 Sep 2006 19:54:45 -0700
From:	keith mannthey <kmannth@...ibm.com>
To:	lkml <linux-kernel@...r.kernel.org>
Cc:	andrew <akpm@...l.org>, Vivek goyal <vgoyal@...ibm.com>,
	dave hansen <haveblue@...ibm.com>
Subject: [Patch] i386 bootioremap / kexec fix


  With CONFIG_PHYSICAL_START set to a non default values the i386
boot_ioremap code calculated its pte index wrong and users of
boot_ioremap have their areas incorrectly mapped  (for me SRAT table not
mapped during early boot). This patch removes the addr < BOOT_PTE_PTRS
constraint. 

Signed-off-by: Keith Mannthey<kmannth@...ibm.com>
---
 boot_ioremap.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff -urN linux-2.6.18-rc6-mm2-orig/arch/i386/mm/boot_ioremap.c
linux-2.6.17/arch/i386/mm/boot_ioremap.c
--- linux-2.6.18-rc6-mm2-orig/arch/i386/mm/boot_ioremap.c	2006-09-18
01:19:22.000000000 -0700
+++ linux-2.6.17/arch/i386/mm/boot_ioremap.c	2006-09-18
01:23:33.000000000 -0700
@@ -29,8 +29,11 @@
  */
 
 #define BOOT_PTE_PTRS (PTRS_PER_PTE*2)
-#define boot_pte_index(address) \
-	     (((address) >> PAGE_SHIFT) & (BOOT_PTE_PTRS - 1))
+
+static unsigned long boot_pte_index(unsigned long vaddr) 
+{
+	return __pa(vaddr) >> PAGE_SHIFT;
+}
 
 static inline boot_pte_t* boot_vaddr_to_pte(void *address)
 {


-
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/