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* | Fix discrepancy between VDSO based gettimeofday() and sys_gettimeofday().Tony Breeds2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On platforms that copy sys_tz into the vdso (currently only x86_64, soon to include powerpc), it is possible for the vdso to get out of sync if a user calls (admittedly unusual) settimeofday(NULL, ptr). This patch adds a hook for architectures that set CONFIG_GENERIC_TIME_VSYSCALL to ensure when sys_tz is updated they can also updatee their copy in the vdso. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Cc: Andi Kleen <ak@suse.de> Cc: Tony Luck <tony.luck@intel.com> Acked-by: John Stultz <johnstul@us.ibm.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Hibernation: Use temporary page tables for kernel text mapping on x86_64Rafael J. Wysocki2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use temporary page tables for the kernel text mapping during hibernation restore on x86_64. Without the patch, the original boot kernel's page tables that represent the kernel text mapping are used while the core of the image kernel is being restored. However, in principle, if the boot kernel is not identical to the image kernel, the location of these page tables in the image kernel need not be the same, so we should create a safe copy of the kernel text mapping prior to restoring the core of the image kernel. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Hibernation: Pass CR3 in the image header on x86_64Rafael J. Wysocki2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | Since we already pass the address of restore_registers() in the image header, we can also pass the value of the CR3 register from before the hibernation in the same way. This will allow us to avoid using init_level4_pgt page tables during the restore. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Hibernation: Arbitrary boot kernel support on x86_64Rafael J. Wysocki2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make it possible to restore a hibernation image on x86_64 with the help of a kernel different from the one in the image. The idea is to split the core restoration code into two separate parts and to place each of them in a different page.  The first part belongs to the boot kernel and is executed as the last step of the image kernel's memory restoration procedure.  Before being executed, it is relocated to a safe page that won't be overwritten while copying the image kernel pages. The final operation performed by it is a jump to the second part of the core restoration code that belongs to the image kernel and has just been restored. This code makes the CPU switch to the image kernel's page tables and restores the state of general purpose registers (including the stack pointer) from before the hibernation. The main issue with this idea is that in order to jump to the second part of the core restoration code the boot kernel needs to know its address.  However, this address may be passed to it in the image header.  Namely, the part of the image header previously used for checking if the version of the image kernel is correct can be replaced with some architecture specific data that will allow the boot kernel to jump to the right address within the image kernel.  These data should also be used for checking if the image kernel is compatible with the boot kernel (as far as the memory restroration procedure is concerned). It can be done, for example, with the help of a "magic" value that has to be equal in both kernels, so that they can be regarded as compatible. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | s2ram: kill old debugging junkPavel Machek2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | This removes old debugging stuff, that should be no longer neccessary. It accessed VGA hardware (which may not be ready at this point), and used LEDs at port 80 for debugging. Signed-off-by: Pavel Machek <pavel@suse.cz> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86Linus Torvalds2007-10-17
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * ssh://master.kernel.org/pub/scm/linux/kernel/git/tglx/linux-2.6-x86: (114 commits) x86: delete vsyscall files during make clean kbuild: fix typo SRCARCH in find_sources x86: fix kernel rebuild due to vsyscall fallout .gitignore update for x86 arch x86: unify include/asm/debugreg_32/64.h x86: unify include/asm/unwind_32/64.h x86: unify include/asm/types_32/64.h x86: unify include/asm/tlb_32/64.h x86: unify include/asm/siginfo_32/64.h x86: unify include/asm/bug_32/64.h x86: unify include/asm/mman_32/64.h x86: unify include/asm/agp_32/64.h x86: unify include/asm/kdebug_32/64.h x86: unify include/asm/ioctls_32/64.h x86: unify include/asm/floppy_32/64.h x86: apply missing DMA/OOM prevention to floppy_32.h x86: unify include/asm/cache_32/64.h x86: unify include/asm/cache_32/64.h x86: unify include/asm/dmi_32/64.h x86: unify include/asm/delay_32/64.h ...
| * | x86: delete vsyscall files during make cleanSam Ravnborg2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | make clean failed to delete a few files in x86/kernel. This is because kbuild does not see the correct/full kernel/Makefile. As a workaround until the Makefiles are merged specify the files to be deleted in the common Makefile. Reported by Mike Galbraith <efault@gmx.de> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Cc: Mike Galbraith <efault@gmx.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: fix kernel rebuild due to vsyscall falloutSam Ravnborg2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix rebuild of kernel when there is no changes. This happened for i386. Using make V=2 hinted that the output files were not assigned to targets - fixed by this patch. Reported by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | .gitignore update for x86 archDenis V. Lunev2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch: - makes .gitignore files visible to git - makes arch/x86/kernel/vsyscall_32.lds and arch/i386/boot invisible Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: convert mm_context_t semaphore to a mutexLuiz Fernando N. Capitulino2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | convert mm_context_t semaphore to a mutex. Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: multi-byte single instruction NOPsJan Beulich2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for and use the multi-byte NOPs recently documented to be available on all PentiumPro and later processors. This patch only applies cleanly on top of the "x86: misc. constifications" patch sent earlier. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> arch/x86/kernel/alternative.c | 23 ++++++++++++++++++++++- include/asm-x86/processor_32.h | 22 ++++++++++++++++++++++ include/asm-x86/processor_64.h | 22 ++++++++++++++++++++++ 3 files changed, 66 insertions(+), 1 deletion(-)
| * | x86: remove duplicated vsyscall nsec updateAndi Kleen2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Spotted by Chuck Ebbert [ tglx: arch/x86 adaptation ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: remove unnecessary codeIngo Molnar2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Oleg Nesterov pointed out that the set_fs() calls in setup_frame() and setup_rt_frame() were superfluous. [ tglx: arch/x86 adaptation ] Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Oleg Nesterov <oleg@tv-sign.ru> Cc: Chuck Ebbert <76306.1226@compuserve.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: convert mm_context_t semaphore to a mutexLuiz Fernando N. Capitulino2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | [ tglx: arch/x86 adaptation ] Signed-off-by: Luiz Fernando N. Capitulino <lcapitulino@mandriva.com.br> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: Use string instruction memcpy on AMD Fam11hAndi Kleen2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | [ tglx: arch/x86 adaptation ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: make io_apic not connected pin print completeYinghai Lu2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Normally we will have two segment not connected pin pin0, and pin after 15... So we need to print out "not connected\n" for previous segment, before printing out connected pins info... Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
| * | i386: print better early fault infoIngo Molnar2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | improve early fault output. old format: Int 14: CR2 010001e3 err 00000002 EIP c011f2f9 CS 00000060 flags 00010046 Stack: c073695e c0791c10 00000000 ffffffff 00000000 01000000 00001000 c0791c10 new format: BUG: Int 14: CR2 010001e3 EDI c1000000 ESI c0693c10 EBP c0637f9c ESP c0637f08 EBX 00000000 EDX 0000000e ECX 00000000 EAX 010001e3 err 00000002 EIP c0123119 CS 00000060 flg 00010046 Stack: c064d589 c0693000 00000000 c0637f60 00c001e3 01000000 00038000 00000163 00000000 00000163 00000000 ffffffff 00038000 00000000 00000000 00001000 00001000 00000000 c0637f88 c06509be c0a2ae60 00001000 00001000 00000000 Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: also show non-zero IRQ counts for vectors that currently don't have a ↵Jan Beulich2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | handler It doesn't seem to make sense to hide these, even if their counts can't change at the point in time they're being displayed. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: expand /proc/interrupts to include missing vectors, v2Joe Korty2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add missing IRQs and IRQ descriptions to /proc/interrupts. /proc/interrupts is most useful when it displays every IRQ vector in use by the system, not just those somebody thought would be interesting. This patch inserts the following vector displays to the i386 and x86_64 platforms, as appropriate: rescheduling interrupts TLB flush interrupts function call interrupts thermal event interrupts threshold interrupts spurious interrupts A threshold interrupt occurs when ECC memory correction is occuring at too high a frequency. Thresholds are used by the ECC hardware as occasional ECC failures are part of normal operation, but long sequences of ECC failures usually indicate a memory chip that is about to fail. Thermal event interrupts occur when a temperature threshold has been exceeded for some CPU chip. IIRC, a thermal interrupt is also generated when the temperature drops back to a normal level. A spurious interrupt is an interrupt that was raised then lowered by the device before it could be fully processed by the APIC. Hence the apic sees the interrupt but does not know what device it came from. For this case the APIC hardware will assume a vector of 0xff. Rescheduling, call, and TLB flush interrupts are sent from one CPU to another per the needs of the OS. Typically, their statistics would be used to discover if an interrupt flood of the given type has been occuring. AK: merged v2 and v4 which had some more tweaks AK: replace Local interrupts with Local timer interrupts AK: Fixed description of interrupt types. [ tglx: arch/x86 adaptation ] [ mingo: small cleanup ] Signed-off-by: Joe Korty <joe.korty@ccur.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Tim Hockin <thockin@hockin.org> Cc: Andi Kleen <ak@suse.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: clean up oops/bug reportsPavel Emelyanov2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Typically the oops first lines look like this: BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c049dfbd *pde = 00000000 Oops: 0002 [#1] PREEMPT SMP ... Such output is gained with some ugly if (!nl) printk("\n"); code and besides being a waste of lines, this is also annoying to read. The following output looks better (and it is how it looks on x86_64): BUG: unable to handle kernel NULL pointer dereference at virtual address 00000000 printing eip: c049dfbd *pde = 00000000 Oops: 0002 [#1] PREEMPT SMP ... [ tglx: arch/x86 adaptation ] Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: print info about late C1E detection on 32bit as wellThomas Gleixner2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some BIOSes set the C1E flag only on the second core. Print a warning so the Firmware Toolkit can check for it. mingo: fix C1E build bug on 32-bit Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: call cache_add_dev() from cache_sysfs_init() explicitlySatyam Sharma2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Call cache_add_dev() from cache_sysfs_init() explicitly, instead of referencing the CPU notifier callback directly from generic startup code. Looks cleaner (to me at least) this way, and also makes it possible to use other tricks to replace __cpuinit{data} annotations, as recently discussed on this list. Signed-off-by: Satyam Sharma <satyam@infradead.org> Cc: Andi Kleen <ak@suse.de> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: fix dmi const-ify falloutThomas Gleixner2007-10-17
| | | | | | | | | | | | | | | | | | | | | The dmi const-ification missed acer_cpu_freq_pst. Fix it. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: calgary get rid of translate_phbMuli Ben-Yehuda2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that we check for translation enabled/disabled based on the presence of the IOMMU translation table, we can get rid of translate_phb. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: fix cpu_to_node referencesMike Travis2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In x86_64 and i386 architectures most arrays that are sized using NR_CPUS lay in local memory on node 0. Not only will most (99%?) of the systems not use all the slots in these arrays, particularly when NR_CPUS is increased to accommodate future very high cpu count systems, but a number of cache lines are passed unnecessarily on the system bus when these arrays are referenced by cpus on other nodes. Typically, the values in these arrays are referenced by the cpu accessing it's own values, though when passing IPI interrupts, the cpu does access the data relevant to the targeted cpu/node. Of course, if the referencing cpu is not on node 0, then the reference will still require cross node exchanges of cache lines. A common use of this is for an interrupt service routine to pass the interrupt to other cpus local to that node. Ideally, all the elements in these arrays should be moved to the per_cpu data area. In some cases (such as x86_cpu_to_apicid) the array is referenced before the per_cpu data areas are setup. In this case, a static array is declared in the __initdata area and initialized by the booting cpu (BSP). The values are then moved to the per_cpu area after it is initialized and the original static array is freed with the rest of the __initdata. This patch: Fix four instances where cpu_to_node is referenced by array instead of via the cpu_to_node macro. This is preparation to moving it to the per_cpu data area. Signed-off-by: Mike Travis <travis@sgi.com> Cc: Andi Kleen <ak@suse.de> Cc: Christoph Lameter <clameter@sgi.com> Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: constify wd_opsJan Beulich2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | .. as they're, with a single exception, never written to. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: clean up mce= argument parsing slightlyAndi Kleen2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Move the = into the __setup line. Document the option in kernel-parameters.txt by adding a pointer to the x86-64 specific documentation. [ tglx: arch/x86 adaptation ] Pointed out by Robert Day Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: remove x86_cpu_to_log_apicidMike Travis2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the x86_cpu_to_log_apicid array. It is set in arch/x86_64/kernel/genapic_flat.c:flat_init_apic_ldr() and arch/x86_64/kernel/smpboot.c:do_boot_cpu() but it is never referenced. [ tglx: arch/x86 adaptation ] Signed-off-by: Mike Travis <travis@sgi.com> Signed-off-by: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: simplify smp_call_function_single() call sequence in cpuidAvi Kivity2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | smp_call_function_single() now knows how to call the function on the current cpu. [ tglx: arch/x86 adaptation ] Cc: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Avi Kivity <avi@qumranet.com> Signed-off-by: Andi Kleen <ak@suse.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: kmalloc + memset conversion to kzallocMariusz Kozlowski2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/x86_64/kernel/io_apic.c | 56080 -> 56038 (-42 bytes) also eliminate unnecessary local variable assignment. [ tglx: arch/x86 adaptation ] Signed-off-by: Mariusz Kozlowski <m.kozlowski@tuxland.pl> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: no need to make enable_cpu_hotplug a variableAdrian Bunk2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As long as there's no write access to this variable there's no reason to let gcc check it at runtime. [ tglx: arch/x86 adaptation ] Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: Remove local CPU logic in MTRR call to smp_call_function_singleakpm@linux-foundation.org2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | smp_call_function_single handles the call to local CPU case correctly now, no need to handle this in the caller. [ tglx: arch/x86 adaptation ] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: Create clflush() inline, remove hardcoded wbinvdH. Peter Anvin2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Create an inline function for clflush(), with the proper arguments, and use it instead of hard-coding the instruction. This also removes one instance of hard-coded wbinvd, based on a patch by Bauder de Oliveira Costa. [ tglx: arch/x86 adaptation ] Cc: Andi Kleen <andi@firstfloor.org> Cc: Glauber de Oliveira Costa <gcosta@redhat.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: constify stacktrace_opsJan Beulich2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | .. as they're never written to. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: Some cleanups for pci gart codeAndi Kleen2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Mark function static - Clarify license [ tglx: arch/x86 adaptation ] Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: misc. constificationsJan Beulich2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Miscellaneous x86 stuff that can live in .rodata. [ tglx: arch/x86 adaptation ] Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: more struct irqaction initializer cleanupsThomas Gleixner2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | more struct irqaction initializer cleanups. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: clean up struct irqaction initializersThomas Gleixner2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | clean up struct irqaction initializers to C99. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | i386: misc cpuinit annotationsSatyam Sharma2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cpuid_class_cpu_callback() is callback function of a CPU hotplug notifier_block (that is already marked as __cpuinitdata). Therefore it can safely be marked as __cpuinit. cpuid_device_create() is only referenced from other functions that are __cpuinit or __init. So it can also be safely marked __cpuinit. [ tglx: arch/x86 adaptation ] Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: Misc cpuinit annotationsSatyam Sharma2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | msr_class_cpu_callback() can be marked __cpuinit, being the notifier callback for a __cpuinitdata notifier_block. So can be marked msr_device_create() too, called only from the newly-__cpuinit msr_class_cpu_callback() or from __init-marked msr_init(). [ tglx: arch/x86 adaptation ] Signed-off-by: Satyam Sharma <satyam@infradead.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: Clean up duplicate includes in arch/i386/kernel/Jesper Juhl2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch cleans up duplicate includes in arch/i386/kernel/ [ tglx: arch/x86 adaptation ] Signed-off-by: Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: intel_cacheinfo misc section annotation fixesSatyam Sharma2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cache_shared_cpu_map_setup() and cache_remove_shared_cpu_map() are functions called from another function that is __cpuinit. But the !CONFIG_SMP empty-body stubs of these functions are unconditionally marked __init, which is actively wrong, and will lead to oops. But we never saw this oops, because they always managed to get inlined in their callsites, by virtue of being empty-body stubs! They should still be __cpuinit, of course. assocs[], levels[] and types[] are only referenced from function that is __cpuinit. So these are candidates for being marked __cpuinitdata. [akpm@linux-foundation.org: build fix] Signed-off-by: Satyam Sharma <satyam@infradead.org> Cc: Andi Kleen <ak@suse.de> Cc: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: use dev_to_node() to get node for device in dma_alloc_pages()Yinghai Lu2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | use dev_to_node() to get node for device in dma_alloc_pages(). Signed-off-by: Yinghai Lu <yinghai.lu@sun.com> Acked-by: Christoph Lameter <clameter@sgi.com> Cc: Christoph Lameter <clameter@sgi.com> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Jeff Garzik <jeff@garzik.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: Calgary: fix disable busnum for CalIOC2Muli Ben-Yehuda2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The old check we used based on dev->bus->number is wrong for devices on CalIOC2. Instead look whether we have an IOMMU table for that bus - if not, translation is disabled. Thanks to Murillo Fernandes Bernardes <bernarde@br.ibm.com> for spotting, suggesting a fix and testing. Signed-off-by: Muli Ben-Yehuda <muli@il.ibm.com> Acked-by: Murillo Fernandes Bernardes <bernarde@br.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: prepare page allocator for high allocations on PAGEALLOC=yIngo Molnar2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | To preserve the DMA pool in CONFIG_DEBUG_PAGEALLOC=y kernels, we'll allocate pagetables from above the 16MB DMA limit, so we'll have to set up boot pagetables to cover 16MB more RAM (worst-case). Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: do not crash on non-Geode PCs in TSC probeIngo Molnar2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | with this fix Geode kernels can be booted (and QA-ed) on generic PCs. otherwise it crashes and burns during early bootup: Detected 2160.212 MHz processor. general protection fault: 0000 [#1] PREEMPT SMP Modules linked in: CPU: 0 EIP: 0060:[<c09071f6>] Not tainted VLI EFLAGS: 00010002 (2.6.23-rc9 #90) EIP is at tsc_init+0xa6/0x150 eax: 00000001 ebx: c1dce000 ecx: 00001900 edx: 00000001 esi: 00051000 edi: 00051000 ebp: c08fdfc4 esp: c08fdfa4 ds: 007b es: 007b fs: 00d8 gs: 0000 ss: 0068 Process swapper (pid: 0, ti=c08fc000 task=c082a180 task.ti=c08fc000) Stack: c076b870 00000870 000000d4 0000001d c0831e80 c1dce000 00051000 00051000 c08fdfcc c09053f8 c08fdff8 c09045ff 000001e2 c09040a0 00051000 00000020 0004e500 c0932140 00020800 00099800 c08ed000 01409007 00000000 Call Trace: [<c010517a>] show_trace_log_lvl+0x1a/0x30 [<c0105246>] show_stack_log_lvl+0xb6/0x100 [<c0105732>] show_registers+0x212/0x3a0 [<c0105aa4>] die+0x104/0x220 [<c0105f5f>] do_general_protection+0x1ef/0x2b0 [<c06699f2>] error_code+0x72/0x78 [<c09053f8>] time_init+0x8/0x20 [<c09045ff>] start_kernel+0x1af/0x320 [<00000000>] 0x0 ======================= Code: 31 d2 b8 00 00 09 3d f7 35 2c 70 9b c0 a3 04 95 8f c0 e8 ce 4e 99 ff b8 e0 45 93 c0 e8 94 b1 c5 ff e8 7f 3d 80 ff b9 00 19 00 00 <0f> 32 f6 c4 01 74 07 83 25 24 ce 82 c0 fd 8b 0d 20 ce 82 c0 b8 EIP: [<c09071f6>] tsc_init+0xa6/0x150 SS:ESP 0068:c08fdfa4 Kernel panic - not syncing: Attempted to kill the idle task! Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: enable NMI watchdog on nosmpIngo Molnar2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | if nosmp has been passed as a boot option, but nmi_watchdog=2 has also been enabled then keep minimal local APIC functionality around to make the watchdog work. this allowed me to debug a hard hang that would only occur with a nosmp bootup. Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: call free_init_pages() with irqs enabled in alternative_instructions()Fengguang Wu2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In alternative_instructions(), call free_init_pages() with irqs enabled. It fixes the warning message in smp_call_function*(), which should not be called with irqs disabled. [ 0.310000] CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) [ 0.310000] CPU: L2 Cache: 512K (64 bytes/line) [ 0.310000] CPU 0/0 -> Node 0 [ 0.310000] SMP alternatives: switching to UP code [ 0.310000] Freeing SMP alternatives: 25k freed [ 0.310000] WARNING: at arch/x86_64/kernel/smp.c:397 smp_call_function_mask() [ 0.310000] [ 0.310000] Call Trace: [ 0.310000] [<ffffffff8100dbde>] dump_trace+0x3ee/0x4a0 [ 0.310000] [<ffffffff8100dcd3>] show_trace+0x43/0x70 [ 0.310000] [<ffffffff8100dd15>] dump_stack+0x15/0x20 [ 0.310000] [<ffffffff8101cd44>] smp_call_function_mask+0x94/0xa0 [ 0.310000] [<ffffffff8101d0b2>] smp_call_function+0x32/0x40 [ 0.310000] [<ffffffff8104277f>] on_each_cpu+0x1f/0x50 [ 0.310000] [<ffffffff81026eac>] global_flush_tlb+0x8c/0x110 [ 0.310000] [<ffffffff81025c85>] free_init_pages+0xe5/0xf0 [ 0.310000] [<ffffffff81549b5e>] alternative_instructions+0x7e/0x150 [ 0.310000] [<ffffffff8154a2ea>] check_bugs+0x1a/0x20 [ 0.310000] [<ffffffff81540c4a>] start_kernel+0x2da/0x380 [ 0.310000] [<ffffffff81540132>] _sinittext+0x132/0x140 [ 0.310000] [ 0.320000] ACPI: Core revision 20070126 [ 0.560000] Using local APIC timer interrupts. [ 0.590000] Detected 62.496 MHz APIC timer. [ 0.590000] Brought up 1 CPUs [ tglx: arch/x86 adaptation ] Cc: Laurent Vivier <Laurent.Vivier@bull.net> Cc: Andi Kleen <ak@suse.de> Signed-off-by: Fengguang Wu <wfg@mail.ustc.edu.cn> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | x86: return correct error code from child_rip in x86_64 entry.SAndrey Mirkin2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Right now register edi is just cleared before calling do_exit. That is wrong because correct return value will be ignored. Value from rax should be copied to rdi instead of clearing edi. AK: changed to 32bit move because it's strictly an int [ tglx: arch/x86 adaptation ] Signed-off-by: Andrey Mirkin <major@openvz.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| * | i386: fix section mismatch warning in intel.cSam Ravnborg2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix following section mismatch warning: WARNING: vmlinux.o(.text+0xc88c): Section mismatch: reference to .init.text:trap_init_f00f_bug (between 'init_intel' and 'cpuid4_cache_lookup') init_intel are __cpuint where trap_init_f00f_bug is __init. Fixed by declaring trap_init_f00f_bug __cpuinit. Moved the defintion of trap_init_f00f_bug to the sole user in init.c so the ugly prototype in intel.c could get killed. Frank van Maarseveen <frankvm@frankvm.com> supplied the .config used to reproduce the warning. [ tglx: arch/x86 adaptation ] Cc: Frank van Maarseveen <frankvm@frankvm.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: Andi Kleen <ak@suse.de> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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