lwn.git/arch/um, branch v2.6.22.4

UML: exports for hostfs

2007-08-09T21:27:47+00:00

Add some exports for hostfs that are required after Alberto Bertogli's fixes for accessing unlinked host files. Also did some style cleanups while I was here. Signed-off-by: Jeff Dike Signed-off-by: Greg Kroah-Hartman

uml: limit request size on COWed devices

2007-08-09T21:27:41+00:00

COWed devices can't handle more than 32 (64 on x86_64) sectors in one request due to the size of the bitmap being carried around in the io_thread_req. Enforce that by telling the block layer not to put too many sectors in requests to COWed devices. Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

uml: remove PAGE_SIZE from libc code

2007-06-16T20:16:16+00:00

Distros seem to be removing PAGE_SIZE from asm/page.h. So, the libc side of UML should stop using it. I replace it with UM_KERN_PAGE_SIZE, which is defined to be the same as PAGE_SIZE on the kernel side of the house. I could also use getpagesize(), but it's more important that UML have the same value of PAGE_SIZE everywhere. It's conceivable that it could be built with a larger PAGE_SIZE, and use of getpagesize() would break that badly. PAGE_MASK got the same treatment, as it is closely tied to PAGE_SIZE. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

uml: get declaration of simple_strtoul

2007-06-09T00:23:33+00:00

Include linux/kernel.h wherever simple_strtoul is used. This kills a compile warning in stderr_console.c and potential ones in the other files. This also fixes a bunch of style violations in exitcode.c. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

uml: fix kernel stack size on x86_64

2007-06-09T00:23:33+00:00

Force KERNEL_STACK_ORDER to be at least 1 on UML/x86_64, to avoid overflows. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

uml: improve PTRACE_SYSEMU checking

2007-05-24T03:14:12+00:00

Make the PTRACE_SYSEMU checking more robust. It will make sure that system call numbers are reported correctly. If there is a problem, it will disable PTRACE_SYSEMU use and use PTRACE_SYSCALL instead. Thanks to Balaji G for helping reproduce this problem. Signed-off-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

all-archs: consolidate .data section definition in asm-generic

2007-05-19T07:11:57+00:00

With this consolidation we can now modify the .data section definition in one spot for all archs. Signed-off-by: Sam Ravnborg

all-archs: consolidate .text section definition in asm-generic

2007-05-19T07:11:57+00:00

Move definition of .text section to asm-generic. Signed-off-by: Sam Ravnborg

fix uml-x86_64

2007-05-16T01:56:37+00:00

__NR_syscall_max is done in x86_64 asm-offsets; do an equivalent in uml kern_constants.h Signed-off-by: Al Viro Acked-by: Jeff Dike Signed-off-by: Linus Torvalds

uml: shrink kernel stacks

2007-05-11T15:29:34+00:00

Make kernel stacks be 1 page on i386 and 2 pages on x86_64. These match the host values. Signed-off-by: Jeff Dike Cc: Paolo 'Blaisorblade' Giarrusso Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds