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2005-06-08[PATCH] uml: compile fixes for gcc 4Jeff Dike
This is a bunch of compile fixes provoked by building UML with gcc 4. There are a bunch of signedness mismatches, a couple of uninitialized references, and a botched C99 structure initialization which had somehow gone unnoticed. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-08[PATCH] uml: make the emulated iomem driver work on 2.6Jeff Dike
This makes the minimal fixes needed to make the UML iomem driver work in 2.6. Signed-off-by: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-08Merge rsync://rsync.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds
2005-06-08[IA64] Extract correct break number for break.bKeith Owens
break.b does not store the break number in cr.iim, instead it stores 0, which makes all break.b instructions look like BUG(). Extract the break number from the instruction itself. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-08[IA64] Update comment to describe modes set in default control register.Tony Luck
Christian Hildner pointed out that the comment did not match what the code does in cpu_init() when we set up the default control register. Patch based on suggestions from Ken Chen. Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-08Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
2005-06-08[IA64] Module gp must point to valid memoryKeith Owens
Some bits of the kernel assume that gp always points to valid memory, in particular PHYSICAL_MODE_ENTER() assumes that both gp and sp are valid virtual addresses with associated physical pages. The IA64 module loader puts gp well past the end of the module, with no physical backing. Offsets on gp are still valid, but physical mode addressing breaks for modules. Ensure that gp always falls within the module body. Also ensure that gp is 8 byte aligned. Signed-off-by: Keith Owens <kaos@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-08[PATCH] ARM: 2664/2: add support for atomic ops on pre-ARMv6 SMP systemsNicolas Pitre
Patch from Nicolas Pitre Not that there might be many of them on the planet, but at least RMK apparently has one. Signed-off-by: Nicolas Pitre Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-08[PATCH] ARM: 2705/1: fix writesw for misaligned source pointerNicolas Pitre
Patch from Nicolas Pitre Signed-off-by: Nicolas Pitre Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-08[IA64] Fill holes in FIXADDR_USER space with zero pages.David Mosberger-Tang
This fixes an oops reported by Jason Baron. Signed-off-by: David Mosberger-Tang <davidm@hpl.hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-08[PATCH] ppc64 kprobes: don't eat dabr/iabr exceptionsAnanth N Mavinakayanahalli
Kprobes was eating the hardware instruction and data address breakpoint exceptions. This patch fixes it; kprobes doesn't use those exceptions at all and should ignore them. Signed-off-by: Ananth N Mavinakayanahalli <amavin@redhat.com> Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-08[PATCH] ppc64: print negative numbers correctly in boot wrapperOlaf Hering
if num has a value of -1, accessing the digits[] array will fail and the format string will be printed in funny way, or not at all. This happens if one prints negative numbers. Just change the code to match lib/vsprintf.c asm/div64.h cant be used because u64 maps to u32 for this build. Signed-off-by: Olaf Hering <olh@suse.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
2005-06-08Automatic merge of master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds
2005-06-08[PATCH] ARM: Fix Xscale copy_page implementationRussell King
The ARM copypage changes in 2.6.12-rc4-git1 removed the preempt locking from the copypage functions which broke the XScale implementation. This patch fixes the locking on XScale and removes the now unneeded minicache code. Signed-off-by: Russell King <rmk@arm.linux.org.uk> Checked-by: Richard Purdie
2005-06-07[PATCH] ppc32: add 405EP cpu_spec entryEugene Surovegin
Add a definition for PPC 405EP which was lost somehow during 2.4 -> 2.6 transition. Recent change to arch/ppc/kernel/misc.S ("Fix incorrect CPU_FTR fixup usage for unified caches") triggered this bug and 405EP boards don't boot anymore. Signed-off-by: Eugene Surovegin <ebs@ebshome.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-06auto merge with /home/aegl/GIT/linusTony Luck
2005-06-06[PATCH] ppc32: Fix incorrect CPU_FTR fixup usage for unified cachesKumar Gala
Runtime feature support for unified caches was testing a userland feature flag (PPC_FEATURE_UNIFIED_CACHE) instead of a cpu feature flag (CPU_FTR_SPLIT_ID_CACHE). Luckily the current defined bit mask for cpu features and userland features do not overlap so this only causes an issue on machines with a unified cache, which is extremely rare on PPC today. Signed-off-by: Kumar Gala <kumar.gala@freescale.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-04[PATCH] s390: deadlock in appldataGerald Schaefer
The system might hang when using appldata_mem with high I/O traffic and a large number of devices. The spinlocks bdev_lock and swaplock are acquired via calls to si_meminfo() and si_swapinfo() from a tasklet, i.e. interrupt context, which can lead to a deadlock. Replace tasklet with work queue. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-04[PATCH] s390: in_interrupt vs. in_atomicMartin Schwidefsky
The condition for no context in do_exception checks for hard and soft interrupts by using in_interrupt() but not for preemption. This is bad for the users of __copy_from/to_user_inatomic because the fault handler might call schedule although the preemption count is != 0. Use in_atomic() instead in_interrupt(). Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-04[PATCH] s390: uml ptrace fixesBodo Stroesser
To make UML build and run on s390, I needed to do these two little changes: 1) UML includes some of the subarch's (s390) headers. I had to change one of them with the following one-liner, to make this compile. AFAICS, this change doesn't break compilation of s390 itself. 2) UML needs to intercept syscalls via ptrace to invalidate the syscall, read syscall's parameters and write the result with the result of UML's syscall processing. Also, UML needs to make sure, that the host does no syscall restart processing. On i386 for example, this can be done by writing -1 to orig_eax on the 2nd syscall interception (orig_eax is the syscall number, which after the interception is used as a "interrupt was a syscall" flag only. Unfortunately, s390 holds syscall number and syscall result in gpr2 and its "interrupt was a syscall" flag (trap) is unreachable via ptrace. So I changed the host to set trap to -1, if the syscall number is changed to an invalid value on the first syscall interception. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-04[PATCH] s390: ptrace peek and pokeMartin Schwidefsky
The special cases of peek and poke on acrs[15] and the fpc register are not handled correctly. A poke on acrs[15] will clobber the 4 bytes after the access registers in the thread_info structure. That happens to be the kernel stack pointer. A poke on the fpc with an invalid value is not caught by the validity check. On the next context switch the broken fpc value will cause a program check in the kernel. Improving the checks in peek and poke fixes this. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-03[PATCH] ARM: 2700/1: Disable IXP2000 IRQs at bootupDeepak Saxena
Patch from Deepak Saxena The IXDP2800 bootloader does not disable IRQs before jumping into the kernel and this is causing the Grand Unified KGDB to crash the system when we do an early call to trap_init() and irq handlers have not yet been registered. This patch disables IRQs before we jump into the kernel. Signed-off-by: Deepak Saxena Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-03[PATCH] prom_find_machine_type typo breaks pSeries lpar bootNathan Lynch
A typo in prom_find_machine_type from Ben's recent patch "ppc64: Fix result code handling in prom_init" prevents pSeries LPAR systems from booting. Tested on a pSeries 570 and OpenPower 720 (both Power5 LPAR). Signed-off-by: Nathan Lynch <ntl@pobox.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-03[PATCH] ARM: 2691/1: PXA27x sleep fixes take 2Todd Poynor
Patch from Todd Poynor PXA27x sleep fixes: * set additional sleep/wakeup registers for Mainstone boards. * move CKEN=0 to pxa25x-specific code; that value is harmful on pxa27x. * save/restore additional registers, including some found necessary for C5 processors and/or newer blob versions. * enable future support of additional sleep modes for PXA27x (eg, standby, deep sleep). * split off cpu-specific sleep processing between pxa27x and pxa25x into separate files (partly in preparation for additional sleep modes). Includes fixes from David Burrage. Signed-off-by: Todd Poynor Signed-off-by: Nicolas Pitre Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-03[PATCH] ARM: 2694/1: [s3c2410/dma] release irq properly to fix kernel oopsAlbrecht Dreß
Patch from Albrecht Dreß Problem: When a module requests a DMA channel via the function s3c2410_dma_request(), this function requests the appropriate irq under the name of the client module. When the client module is unloaded, it calls s3c2410_dma_free() which does not free the irq. Consequently, when e.g. running "cat /proc/interrupts", the irq owner points to freed memory, leading to a kernel oops. File: linux/arch/arm/mach-s3c2410/dma.c Fix: trivial, below Signed-off-by: Albrecht Dreß Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2005-06-03[IA64] fix setting of sn_hub_info->shub_1_1_foundDean Nelson
Fix a bug in which shub_1_1_found is not being properly initialized or set, resulting in the improper setting of sn_hub_info->shub_1_1_found. Signed-off-by: Dean Nelson <dcn@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-03[PATCH] m68knommu: fix scheduling and race problems in idle loopGreg Ungerer
Re-work the m68knommu specific idle code according to suggestions from Nick Piggin <nickpiggin@yahoo.com.au>. A couple of rules that we need to follow: 1. Preempt should now disabled over idle routines. Should only be enabled to call schedule() then disabled again. 3. When cpu_idle finds (need_resched() == 'true'), it should call schedule(). It should not call schedule() otherwise. Also fix interrupt locking around the need_resched() and cpu stop state so that there is no race condition. Signed-off-by: Greg Ungerer <gerg@snapgear.com> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-02[PATCH] ppc64: remove decr_overclockAnton Blanchard
Now that we have HZ=1000 there is much less of a need for decr_overclock. Remove it. Leave spread_lpevents but move it into iSeries_setup.c. We should look at making event spreading the default some day. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-02[PATCH] ppc64: cleanup iseries runlight supportAnton Blanchard
The iseries has a bar graph on the front panel that shows how busy it is. The operating system sets and clears a bit in the CTRL register to control it. Instead of going to the complexity of using a thread info bit, just set and clear it in the idle loop. Also create two helper functions, ppc64_runlatch_on and ppc64_runlatch_off. Finally don't use the short form of the SPR defines. Signed-off-by: Anton Blanchard <anton@samba.org> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-02[PATCH] ppc64: Fix result code handling in prom_initBenjamin Herrenschmidt
prom_init(), the trampoline code that "talks" to Open Firmware during early boot, has various issues with managing OF result codes. Some of my recent fixups in fact made the problem worse on some platforms. This patch reworks it all. Tested on g5, Maple, POWER3 and POWER5. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-01Merge of master.kernel.org:/pub/scm/linux/kernel/git/aegl/linux-2.6Linus Torvalds
2005-06-01[IA64] fix compilation warning in sys32_epoll_wait()Peter Chubb
This gets rid of an unused variable `error' in sys_ia32.c:sys32_epoll_wait() Getting rid of this one makes parsing the output of the kernecomp autobuild easier --- searching for `Error' to find a problem kept hitting this one, even though it's only a warning. Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-01[IA64] Cleanup compile warnings for ski configPeter Chubb
The attached patch cleans up a compilation warning when ACPI is turned off (i.e., when compiling for the Ski simulator). Signed-off-by: Tony Luck <tony.luck@intel.com>
2005-06-01Automatic merge of ↵Linus Torvalds
rsync://rsync.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6
2005-06-01[PATCH] ppc32/ppc64: cleanup /proc/device-treeBenjamin Herrenschmidt
This cleans up the /proc/device-tree representation of the Open Firmware device-tree on ppc and ppc64. It does the following things: - Workaround an issue in some Apple device-trees where a property may exist with the same name as a child node of the parent. We now simply "drop" the property instead of creating duplicate entries in /proc with random result... - Do not try to chop off the "@0" at the end of a node name whose unit address is 0. This is not useful, inconsistent, and the code was buggy and didn't always work anyway. - Do not create symlinks for the short name and unit address parts of a node. These were never really used, bloated the memory footprint of the device-tree with useless struct proc_dir_entry and their matching dentry and inode cache bloat. This results in smaller code, smaller memory footprint, and a more accurate view of the tree presented to userland. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-01[PATCH] ppc32: Apple device-tree bug fixBenjamin Herrenschmidt
This is the ppc32 patch equivalent to the just posted ppc64 one working around a bug in Apple device-trees regarding the "cpus" nodes. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-06-01[PATCH] ppc64: Fix a device-tree bug on Apple'sBenjamin Herrenschmidt
Apple's Open Firmware has a funny bug when creating the /cpus nodes where it leaves a dangling '\0' character in the CPU name which ends up appearing in the full path of the node. This is bogus and confuses /proc/device-tree badly. This patch strips those bogus zero's from the node full path when reading the device-tree from Open Firmware. The "name" property is not modified and still contains the spurrious 0 (it basically contains 0 tailing 0 instead of one) but that shouldn't be a problem. An equivalent patch for ppc32 will follow shortly Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-05-31[SPARC64]: Refine PCI strbuf ctx-based flush.David S. Miller
The initial peek read PIO of the match register is just a waste. Just do the flush writes first, as that is more efficient. Signed-off-by: David S. Miller <davem@davemloft.net>
2005-05-31[CPUFREQ] Typos.Dave Jones
cpfureq developers cant spel. Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] longhaul - adjust transition latency.Dave Jones
From patch by: Ken Staton <ken_staton@agilent.com> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] Longhaul: Magic timer frobbing.Dave Jones
As mandated by the spec, disable timer around transitions. From code by : Ken Staton <ken_staton@agilent.com Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] longhaul - disable PCI mastering around transition.Dave Jones
The spec states that we have to do this, which is *horrid*. Based on code from: Ken Staton <ken_staton@agilent.com> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] dual-core powernow-k8Dave Jones
With the release of the dual-core AMD Opterons last week, it's high time that cpufreq supported them. The attached patch applies cleanly to 2.6.12-rc3 and updates powernow-k8 to support the latest Athlon 64 and Opteron processors. Update the driver to version 1.40.0 and provide support for dual-core processors. Signed-off-by: Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] Recalibrate cpu_khz [2/2]Dave Jones
Some cpufreq drivers (at that time, only powernow-k7) need to recalibrate the cpu_khz at runtime. Signed-off-by: Bruno Ducrot <ducrot@poupinou.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] Recalibrate cpu_khz [1/2]Dave Jones
We have to recalibrate cpu_khz in order to use the current FID instead the max FID since some BIOS do not put the processor at maximum frequency at POST. Also, some BIOS will change the processor frequency at our back after cpu_khz was calibrate. Finally, this will fix a long standing bug when we do something like this: # rmmod powernow-k7 # modprobe powernow-k7 Signed-off-by: Bruno Ducrot <ducrot@poupinou.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] AMD Elan SC520 cpufreq driver.Dave Jones
From: Sean Young <sean@mess.org> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] speedstep-smi: it works on at least one P4MDave Jones
The speedstep-smi driver actually works on >=1 notebook with a Pentium 4-M CPU where all other cpufreq drivers fail. Therefore, allow speedstep-smi on P4Ms again, but warn users of likely failure Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] speedstep-centrino: Pentium 4 - M (HT) supportDave Jones
The Pentium 4 - Ms (HT) with CPUID 0xF34 and 0xF41 seem to support centrino-like enhanced speedstep; however, no "table" support is possible. Therefore, put NULL entries into speedstep-centrino.c Signed-off-by: Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[CPUFREQ] powernow-k7: don't print khz element of FSB.Dave Jones
Signed-off-by: Dave Jones <davej@redhat.com>
2005-05-31[SPARC64]: Fix streaming buffer flushing on PCI and SBUS.David S. Miller
Firstly, if the direction is TODEVICE, then dirty data in the streaming cache is impossible so we can elide the flush-flag synchronization in that case. Next, the context allocator is broken. It is highly likely that contexts get used multiple times for different dma mappings, which confuses the strbuf flushing code and makes it run inefficiently. Signed-off-by: David S. Miller <davem@davemloft.net>
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