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* [PATCH] s390: Increase spinlock retry code performanceChristian Ehrhardt2006-03-09
| | | | | | | | | | | | | | Currently the code tries up to spin_retry times to grab a lock using the cs instruction. The cs instruction has exclusive access to a memory region and therefore invalidates the appropiate cache line of all other cpus. If there is contention on a lock this leads to cache line trashing. This can be avoided if we first check wether a cs instruction is likely to succeed before the instruction gets actually executed. Signed-off-by: Christian Ehrhardt <ehrhardt@de.ibm.com> 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>
* [PATCH] xtensa must set RWSEM_GENERIC_SPINLOCK=yAdrian Bunk2006-03-09
| | | | | | | | | | /usr/src/ctest/git/kernel/mm/rmap.c: In function `page_referenced_one': /usr/src/ctest/git/kernel/mm/rmap.c:354: warning: implicit declaration of function `rwsem_is_locked' Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] arch/sh/Kconfig: don't source non-existing Kconfig filesAdrian Bunk2006-03-09
| | | | | | | | | | arch/sh/Kconfig shouldn't source non-existing Kconfig files. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] alpha: fix IRQ handling lockupIvan Kokshaysky2006-03-09
| | | | | | | | | Fix a lockup which was introduced during the conversion to the generic IRQ framework. Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [MIPS] Always pass -msoft-float.Ralf Baechle2006-03-09
| | | | | | Some people still haven't heared that fp in the kernel is forbidden. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Scatter a bunch of __init over tlbex.c.Ralf Baechle2006-03-09
| | | | | | Found by make buildcheck. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Momentum: Resurrect after things were moved around a while ago.Ralf Baechle2006-03-09
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Discard .exit.text at runtime.Ralf Baechle2006-03-09
| | | | | | | | | | At times gcc will place bits of __exit functions into .rodata. If compiled into the kernle itself we used to discard .exit.text - but not the bits left in .rodata. While harmless this did at times result in a large number of warnings. So until gcc fixes this, discard .exit.text at runtime. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] Enable highmem for all MIPS32 and MIPS64 processors.Ralf Baechle2006-03-09
| | | | | | | In case a particular system doesn't support highmem the runtime checks will ensure nothing bad is going to happen. Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* [MIPS] A struct console.setup function may not be __init.Ralf Baechle2006-03-09
| | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-mergeLinus Torvalds2006-03-08
|\ | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc-merge: powerpc: Fix various syscall/signal/swapcontext bugs [PATCH] powerpc: incorrect rmo_top handling in prom_init [PATCH] powerpc: Fix incorrect pud_ERROR() message [PATCH] powerpc: Expose SMT and L1 icache snoop userland features [PATCH] powerpc: Fix windfarm_pm112 not starting all control loops [PATCH] powerpc: Fix old g5 issues with windfarm powerpc32: Fix timebase synchronization on 32-bit powermacs powerpc: Turn off verbose debug output in powermac platform functions powerpc: Fix might-sleep warning in program check exception handler
| * powerpc: Fix various syscall/signal/swapcontext bugsPaul Mackerras2006-03-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A careful reading of the recent changes to the system call entry/exit paths revealed several problems, plus some things that could be simplified and improved: * 32-bit wasn't testing the _TIF_NOERROR bit in the syscall fast exit path, so it was only doing anything with it once it saw some other bit being set. In other words, the noerror behaviour would apply to the next system call where we had to reschedule or deliver a signal, which is not necessarily the current system call. * 32-bit wasn't doing the call to ptrace_notify in the syscall exit path when the _TIF_SINGLESTEP bit was set. * _TIF_RESTOREALL was in both _TIF_USER_WORK_MASK and _TIF_PERSYSCALL_MASK, which is odd since _TIF_RESTOREALL is only set by system calls. I took it out of _TIF_USER_WORK_MASK. * On 64-bit, _TIF_RESTOREALL wasn't causing the non-volatile registers to be restored (unless perhaps a signal was delivered or the syscall was traced or single-stepped). Thus the non-volatile registers weren't restored on exit from a signal handler. We probably got away with it mostly because signal handlers written in C wouldn't alter the non-volatile registers. * On 32-bit I simplified the code and made it more like 64-bit by making the syscall exit path jump to ret_from_except to handle preemption and signal delivery. * 32-bit was calling do_signal unnecessarily when _TIF_RESTOREALL was set - but I think because of that 32-bit was actually restoring the non-volatile registers on exit from a signal handler. * I changed the order of enabling interrupts and saving the non-volatile registers before calling do_syscall_trace_leave; now we enable interrupts first. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc: incorrect rmo_top handling in prom_initBenjamin Herrenschmidt2006-03-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Thu, 2006-03-02 at 19:55 +0100, Olaf Hering wrote: > My iBook1 has 2 memory regions in reg. Depending on how I boot it > (vmlinux+initrd) or zImage.initrd, it will not boot with current Linus > tree. > rmo_top should be 160MB instead of 32MB. On logically-partitioned machines the first element of the reg property in the memory node is defined to be the "RMO" region, i.e. the memory that the processor can access in real mode. On other machines the first element has no special meaning, so only take it to be the RMO region on LPAR machines. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [PATCH] powerpc: Expose SMT and L1 icache snoop userland featuresBenjamin Herrenschmidt2006-03-03
| | | | | | | | | | | | | | | | This patch makes userland aware of the icache snoop capability of the POWER5 (and possibly others in the future) and of SMT capabilities. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * powerpc32: Fix timebase synchronization on 32-bit powermacsPaul Mackerras2006-03-03
| | | | | | | | | | | | | | | | | | | | | | The variable `timebase' used to transfer the current timebase value from one cpu to the other in smp_core99_give/take_timebase was only an unsigned long, i.e. 32 bits on 32-bit machines. It needs to be 64 bits. This makes it a u64, and fixes the issue reported by Kyle Moffett, that the two cpus see wildly different values for the time of day. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * powerpc: Turn off verbose debug output in powermac platform functionsPaul Mackerras2006-03-03
| | | | | | | | | | | | | | | | This is along the lines suggested by Chris Lumens but goes further in that it leaves the DEBUG symbol undefined, making the DBG macro empty. Signed-off-by: Paul Mackerras <paulus@samba.org>
| * powerpc: Fix might-sleep warning in program check exception handlerPaul Mackerras2006-03-03
| | | | | | | | | | | | | | | | | | | | | | On 32-bit, the exception prolog for the program check exception doesn't enable interrupts early on. If it is an illegal instruction exception, we read the instruction in order to emulate certain instructions, and the get_user of the instruction triggers a WARN_ON since interrupts are still disabled. This adds a local_irq_enable() to enable interrupts before reading the instruction. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [PATCH] i386: port ATI timer fix from x86_64 to i386 IIAndi Kleen2006-03-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ATI chipsets tend to generate double timer interrupts for the local APIC timer when both the 8254 and the IO-APIC timer pins are enabled. This is because they route it to both and the result is anded together and the CPU ends up processing it twice. This patch changes check_timer to disable the 8254 routing for interrupt 0. I think it would be safe on all chipsets actually (i tested it on a couple and it worked everywhere) and Windows seems to do it in a similar way, but to be conservative this patch only enables this mode on ATI (and adds options to enable/disable too) Ported over from a similar x86-64 change. I reused the ACPI earlyquirk infrastructure for the ATI bridge check, but tweaked it a bit to work even without ACPI. Inspired by a patch from Chuck Ebbert, but redone. Cc: Chuck Ebbert <76306.1226@compuserve.com> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] fix kexec asmMichael Matz2006-03-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | While testing kexec and kdump we hit problems where the new kernel would freeze or instantly reboot. The easiest way to trigger it was to kexec a kernel compiled for CONFIG_M586 on an athlon cpu. Compiling for CONFIG_MK7 instead would work fine. The patch fixes a few problems with the kexec inline asm. Signed-off-by: Chris Mason <mason@suse.com> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86: cpu model calculation for family 6 cpuShaohua Li2006-03-08
| | | | | | | | | | | | | | | | | | | | | | | | The x86_model calculation also applies for family 6. early_cpu_detect does the right thing, but generic_identify misses. Signed-off-by: Shaohua Li<shaohua.li@intel.com> Cc: Dave Jones <davej@codemonkey.org.uk> Cc: "Seth, Rohit" <rohit.seth@intel.com> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] s390: fix strnlen_user return valueGerald Schaefer2006-03-08
| | | | | | | | | | | | | | | | | | | | | | | | strnlen_user is supposed to return then length count + 1 if no terminating \0 is found, and it should return 0 on exception. Found by David Howells <dhowells@redhat.com>. Signed-off-by: Gerald Schaefer <geraldsc@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Acked-By: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86: Fix i386 nmi_watchdog that does not trigger die_nmiGOTO Masanori2006-03-08
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix i386 nmi_watchdog that does not meet watchdog timeout condition. It does not hit die_nmi when it should be triggered, because the current nmi_watchdog_tick in arch/i386/kernel/nmi.c never count up alert_counter like this: void nmi_watchdog_tick (struct pt_regs * regs) { if (last_irq_sums[cpu] == sum) { alert_counter[cpu]++; <- count up alert_counter, but if (alert_counter[cpu] == 5*nmi_hz) die_nmi(regs, "NMI Watchdog detected LOCKUP"); alert_counter[cpu] = 0; <- reset alert_counter This patch changes it back to the previous and working version. This was found and originally written by Kohta NAKASHIMA. (akpm: also uninline write_watchdog_counter(), saving 184 byets) Signed-off-by: GOTO Masanori <gotom@sanori.org> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'release' of ↵Linus Torvalds2006-03-08
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6: [IA64] mca recovery return value when no bus check [IA64] SGI SN drivers: don't report !sn2 hardware as an error [IA64] don't report !sn2 or !summit hardware as an error [IA64] gensparse_defconfig: turn on PNPACPI [IA64] Increase severity of MCA recovery messages
| * | [IA64] mca recovery return value when no bus checkRuss Anderson2006-03-07
| | | | | | | | | | | | | | | | | | | | | When there is no bus check, the return code should be failure, not success. Signed-off-by: Russ Anderson (rja@sgi.com) Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] don't report !sn2 or !summit hardware as an errorBjorn Helgaas2006-03-07
| | | | | | | | | | | | | | | | | | | | | | | | This stuff is all in the generic ia64 kernel, and the new initcall error reporting complains about them. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] gensparse_defconfig: turn on PNPACPIBjorn Helgaas2006-03-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Turn on CONFIG_PNPACPI. I recently removed 8250_acpi.c. All devices previously claimed by 8250_acpi.c should now be claimed by 8250_pnp.c. This depends on having CONFIG_PNPACPI so ACPI devices show up as PNP devices. All other ia64 defconfigs either have CONFIG_PNPACPI already, or don't have 8250 support turned on at all. Signed-off-by: Bjorn Helgaas <bjorn.helgaas@hp.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * | [IA64] Increase severity of MCA recovery messagesRuss Anderson2006-03-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The MCA recovery messages are currently KERN_DEBUG, so they don't show up in /var/log/messages (by default). Increase the severity to KERN_ERR, for the initial message (and also add the physical address to this message). Leave the successful isolation message as KERN_DEBUG, but increase the severity when isolation fails to KERN_CRIT. [Russ' patch made these all KERN_CRIT] Signed-off-by: Russ Anderson (rja@sgi.com) Signed-off-by: Tony Luck <tony.luck@intel.com>
* | | [ARM] 3353/1: NAS100d: protect nas100d_power_exit() with machine_is_nas100d()Alessandro Zummo2006-03-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Alessandro Zummo nas100d_power_exit(void) gets some protection to avoid freeing an irq when it is not appropriate to do so. Signed-off-by: Rod Whitby <rod@whitby.id.au> Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | [ARM] 3352/1: DSB required for the completion of a TLB maintenance operationCatalin Marinas2006-03-07
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Catalin Marinas Chapter B2.7.3 in the latest ARM ARM (with v6 information) states that the completion of a TLB maintenance operation is only guaranteed by the execution of a DSB (Data Syncronization Barrier, formerly Data Write Barrier or Drain Write Buffer). Note that a DSB is only needed in the flush_tlb_kernel_* functions since the completion is guaranteed by a mode change (i.e. switching back to user mode) for the flush_tlb_user_* functions. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | [PATCH] EFI: Fix gdt loadEdgar Hucek2006-03-06
| | | | | | | | | | | | | | | | | | | | This patch makes the kernel bootable again on ia32 EFI systems. Signed-off-by: Edgar Hucek <hostmaster@ed-soft.at> Cc: Matt Domsch <Matt_Domsch@dell.com> Cc: Zachary Amsden <zach@vmware.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] add missing pm_power_off'sAdrian Bunk2006-03-06
| | | | | | | | | | | | | | | | | | | | | | | | Add the missing pm_power_off's for the h8300, v850 and xtensa architectures. Signed-off-by: Adrian Bunk <bunk@stusta.de> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] fix next_timer_interrupt() for hrtimerTony Lindgren2006-03-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Also from Thomas Gleixner <tglx@linutronix.de> Function next_timer_interrupt() got broken with a recent patch 6ba1b91213e81aa92b5cf7539f7d2a94ff54947c as sys_nanosleep() was moved to hrtimer. This broke things as next_timer_interrupt() did not check hrtimer tree for next event. Function next_timer_interrupt() is needed with dyntick (CONFIG_NO_IDLE_HZ, VST) implementations, as the system can be in idle when next hrtimer event was supposed to happen. At least ARM and S390 currently use next_timer_interrupt(). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86: fix potential jiffies overflow in timer_resume()Atsushi Nemoto2006-03-06
| | | | | | | | | | | | | | | | | | | | | | i386 timer_resume is updating jiffies, not jiffies_64. It looks there is a potential overflow problem. And jiffies_64 and wall_jiffies should be protected by xtime_lock. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [SPARC64]: Mark __ex_table section correctly.David S. Miller2006-03-05
| | | | | | | | | | | | | | | | | | | | We must use the "a" (allocate) attribute every time we emit an entry into the __ex_table section. For consistency, use "a" instead of #alloc which is some Solaris compat cruft GNU as provides on Sparc. Signed-off-by: David S. Miller <davem@davemloft.net>
* | ppc64: make sure to align stack pointer to 16 bytes at bootLinus Torvalds2006-03-04
|/ | | | | | | | | yaboot is scrogged and calls us with an invalid stack alignment, it seems. Thanks to David Woodhouse to pointing me to the problem. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [MIPS] Use USECS_PER_SEC / HZ instead of tick_usec in do_gettimeofday.Atsushi Nemoto2006-03-01
| | | | | | | | | | | The 'tick_usec' is USER_HZ period in usec. do_gettimeofday() should use kernel HZ value. Here is a patch for MIPS. It seems m32r, m68k and sparc have same problem though their HZ and USER_HZ are same for now. Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* Merge branch 'release' of ↵Linus Torvalds2006-02-28
|\ | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6
| * [IA64] sysctl option to silence unaligned trap warningsJes Sorensen2006-02-28
| | | | | | | | | | | | | | | | | | | | | | | | Allow sysadmin to disable all warnings about userland apps making unaligned accesses by using: # echo 1 > /proc/sys/kernel/ignore-unaligned-usertrap Rather than having to use prctl on a process by process basis. Default behaivour leaves the warnings enabled. Signed-off-by: Jes Sorensen <jes@sgi.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] cleanup in fsys.SKen Chen2006-02-28
| | | | | | | | | | | | | | | | | | beautify coding style for zeroing end of fsyscall_table entries. Remove misleading __NR_syscall_last and add more comments. Drop (now unneeded) "guard against failure to increase NR_syscalls" Signed-off-by: Ken Chen <kenneth.w.chen@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] refresh default config filesTony Luck2006-02-27
| | | | | | | | | | | | Bring all ia64 config files up to date Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] die_if_kernel() can returnTony Luck2006-02-27
| | | | | | | | | | | | | | | | | | | | arch/ia64/kernel/unaligned.c erroneously marked die_if_kernel() with a "noreturn" attribute ... which is silly (it returns whenever the argument regs say that the fault happened in user mode, as one might expect given the "if_kernel" part of its name!). Thanks to Alan and Gareth for pointing this out. Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64-SGI] revert export sn_pcidev_info_getChristoph Hellwig2006-02-27
| | | | | | | | | | | | | | Christoph Hellwig <hch@infradead.org> pointed that there are no in-tree uses of this. So revert 9c65cb9be62ac4993a5b392304b82e4f04f010fd Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] Fix pcibios_setupMatthew Wilcox2006-02-27
| | | | | | | | | | | | | | | | | | | | pcibios_setup() should return NULL if it handled a parameter. Since ia64 handles no parameters, it should return the string that was passed in, not NULL. This brings ia64 into line with all other architectures that handle no parameters. Signed-off-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Tony Luck <tony.luck@intel.com>
| * [IA64] Delete a redundant instruction in unaligned_accessZhang, Yanmin2006-02-27
| | | | | | | | | | | | | | | | | | unaligned_access does fetch cr.ipsr, then calls dispatch_unaligned_handler, but dispatch_unaligned_handler fetches cr.ipsr again, so delete the first one. Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
* | [PATCH] Add mm->task_size and fix powerpc vdsoBenjamin Herrenschmidt2006-02-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds mm->task_size to keep track of the task size of a given mm and uses that to fix the powerpc vdso so that it uses the mm task size to decide what pages to fault in instead of the current thread flags (which broke when ptracing). (akpm: I expect that mm_struct.task_size will become the way in which we finally sort out the confusion between 32-bit processes and 32-bit mm's. It may need tweaks, but at this stage this patch is powerpc-only.) Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | [PATCH] x86 microcode driver vs hotplug CPUs.Dave Jones2006-02-28
| | | | | | | | | | | | | | | | | | | | This driver loops over 'num_online_cpus', but it doesn't account for holes in the online map created by offlined cpus, and assumes that the cpu numbers stay linear. Signed-off-by: Dave Jones <davej@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* | Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds2006-02-28
|\ \
| * | [MIPS] Fix build error on processors that don's support copy-on-write.Ralf Baechle2006-02-28
| | | | | | | | | | | | Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
| * | [MIPS] Initialize S-cache function pointers even on S-cache-less CPUs.Ralf Baechle2006-02-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When a CPU has no scache, the scache flushing functions currently aren't getting initialized and the NULL pointer is eventually called as a function. Initialize the scache flushing functions as a noop when there's no scache. Initial patch by me and most of the debugging done by Martin Michlmayr. Signed-off-by: Martin Michlmayr <tbm@cyrius.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
* | | [PATCH] powerpc/iseries: Fix double phys_to_abs bug in htab_bolt_mappingMichael Ellerman2006-02-28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before the merge I updated create_pte_mapping() to work for iSeries, by calling iSeries_hpte_bolt_or_insert. (4c55130b2aa93370f1bf52d2304394e91cf8ee39) Later we changed iSeries_hpte_insert to cope with the bolting case, and called that instead from create_pte_mapping() (which was renamed to htab_bolt_mapping) (3c726f8dee6f55e96475574e9f645327e461884c). Unfortunately that change introduced a subtle bug, where we pass an absolute address to iSeries_hpte_insert() where it expects a physical address. This leads to us calling phys_to_abs() twice on the physical address, which is seriously bogus. This only causes a problem if the absolute address from the first translation can be looked up again in the chunk_map, which depends on the size and layout of memory. I've seen it fail on one box, but not others. The minimal fix is to pass the physical address to iSeries_hpte_insert(). For 2.6.17 we should make phys_to_abs() BUG if we try to double-translate an address. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
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