linux/arch, branch v2.6.22.2

UML: exports for hostfs

2007-08-09T21:27:47Z

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

2007-08-09T21:27:41Z

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

acpi-cpufreq: Proper ReadModifyWrite of PERF_CTL MSR

2007-08-09T21:27:40Z

[CPUFREQ] acpi-cpufreq: Proper ReadModifyWrite of PERF_CTL MSR During recent acpi-cpufreq changes, writing to PERF_CTL msr changed from RMW of entire 64 bit to RMW of low 32 bit and clearing of upper 32 bit. Fix it back to do a proper RMW of the MSR. Signed-off-by: Venkatesh Pallipadi Signed-off-by: Dave Jones Cc: Chuck Ebbert Signed-off-by: Greg Kroah-Hartman

i386: HPET, check if the counter works

2007-08-09T21:27:37Z

Some systems have a HPET which is not incrementing, which leads to a complete hang. Detect it during HPET setup. Signed-off-by: Thomas Gleixner Signed-off-by: Andi Kleen Cc: john stultz Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

Fix sparc32 udelay() rounding errors.

2007-08-09T21:27:30Z

[SPARC32]: Fix rounding errors in ndelay/udelay implementation. __ndelay and __udelay have not been delayung >= specified time. The problem with __ndelay has been tacked down to the rounding of the multiplier constant. By changing this, delays > app 18us are correctly calculated. The problem with __udelay has also been tracked down to rounding issues. Changing the multiplier constant (to match that used in sparc64) corrects for large delays and adding in a rounding constant corrects for trunctaion errors in the claculations. Many short delays will return without looping. This is not an error as there is the fixed delay of doing all the maths to calculate the loop count. Signed-off-by: Mark Fortescue Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

Fix sparc32 memset()

2007-08-09T21:27:30Z

[SPARC32]: Fix bug in sparc optimized memset. Sparc optimized memset (arch/sparc/lib/memset.S) does not fill last byte of the memory area, if area size is less than 8 bytes and start address is not word (4-bytes) aligned. Here is code chunk where bug located: /* %o0 - memory address, %o1 - size, %g3 - value */ 8: add %o0, 1, %o0 subcc %o1, 1, %o1 bne,a 8b stb %g3, [%o0 - 1] This code should write byte every loop iteration, but last time delay instruction stb is not executed because branch instruction sets "annul" bit. Patch replaces bne,a by bne instruction. Error can be reproduced by simple kernel module: -------------------- #include #include #include #include #include static void do_memset(void **p, int size) { memset(p, 0x00, size); } static int __init memset_test_init(void) { char fooc[8]; int *fooi; memset(fooc, 0xba, sizeof(fooc)); do_memset((void**)(fooc + 3), 1); fooi = (int*) fooc; printk("%08X %08X\n", fooi[0], fooi[1]); return -1; } static void __exit memset_test_cleanup(void) { return; } module_init(memset_test_init); module_exit(memset_test_cleanup); MODULE_LICENSE("GPL"); EXPORT_NO_SYMBOLS; ------------------------ Signed-off-by: Alexander Shmelev Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

Sparc64 bootup assembler bug

2007-08-09T21:27:29Z

[SPARC64]: Fix two year old bug in early bootup asm. We try to fetch the CIF entry pointer from %o4, but that can get clobbered by the early OBP calls. It is saved in %l7 already, so actually this "mov %o4, %l7" can just be completely removed with no other changes. Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

Clean up E7520/7320/7525 quirk printk.

2007-07-07T20:53:13Z

The printk level in this printk is bogus, as the previous printk didn't have a terminating \n resulting in .. Intel E7520/7320/7525 detected.<6>Disabling irq balancing and affinity It also never printed a \n at all in the case where we didn't do the quirk. Change it to only make noise if it actually does something useful. Signed-off-by: Dave Jones Signed-off-by: Linus Torvalds

GEODE: reboot fixup for geode machines with CS5536 boards

2007-07-06T18:45:11Z

Writing to MSR 0x51400017 forces a hard reset on CS5536-based machines, this has the reboot fixup do just that if such a board is detected. Acked-by: Jordan Crouse Signed-off-by: Andres Salomon Cc: Alan Cox Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

2007-07-06T17:29:33Z

* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: [MIPS] Fix scheduling latency issue on 24K, 34K and 74K cores [MIPS] Add macros to encode processor revisions. [MIPS] RM7000: Enable ICACHE_REFILLS_WORKAROUND_WAR. [MIPS] SMTC: Fix cut'n'paste bug in Kconfig.debug [MIPS] Change libgcc-style functions from lib-y to obj-y [MIPS] Fix timer/performance interrupt detection [MIPS] AP/SP: Avoid triggering the 34K E125 performance issue [MIPS] 64-bit TO_PHYS_MASK macro for RM9000 processors