Messages in this thread Patch in this message | | | Date | Fri, 15 Mar 2002 13:28:37 +0000 | From | Russell King <> | Subject | [PATCH] 2.4 and 2.5: fix /proc/kcore |
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As mentioned on May 11 on LKML, here is a patch to fix /proc/kcore for architectures which do not have RAM located at physical address 0.
I did say I'd send this on Monday, however I only got feedback from the ia64 people, and /proc/kcore is already broken on their machines anyway. (They need to fix it up; they place modules below PAGE_OFFSET, which breaks our generated ELF core header).
So I've decided to send it a few days early.
Please apply.
--- orig/fs/proc/kcore.c Fri Mar 15 10:14:44 2002 +++ linux/fs/proc/kcore.c Fri Mar 15 11:18:21 2002 @@ -381,8 +381,13 @@ return tsz; } #endif - /* fill the remainder of the buffer from kernel VM space */ - start = (unsigned long)__va(*fpos - elf_buflen); + + /* + * Fill the remainder of the buffer from kernel VM space. + * We said in the ELF header that the data which starts + * at 'elf_buflen' is virtual address PAGE_OFFSET. --rmk + */ + start = PAGE_OFFSET + (*fpos - elf_buflen); if ((tsz = (PAGE_SIZE - (start & ~PAGE_MASK))) > buflen) tsz = buflen;
-- Russell King (rmk@arm.linux.org.uk) The developer of ARM Linux http://www.arm.linux.org.uk/personal/aboutme.html
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