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* Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds2009-07-06
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86: fix usage of bios intcall() x86: Remove unused function lapic_watchdog_ok() x86: Remove unused variable disable_x2apic x86, kvm: Fix section mismatches in kvm.c x86: Add missing annotation to arch/x86/lib/copy_user_64.S::copy_to_user x86: Fix fixmap page order for FIX_TEXT_POKE0,1 amd-iommu: set evt_buf_size correctly amd-iommu: handle alias entries correctly in init code x86: Fix printk call in print_local_apic() x86: Declare check_efer() before it gets used x86: Mark device_nb as static and fix NULL noise x86: Remove double declaration of MSR_P6_EVNTSEL0 and MSR_P6_EVNTSEL1 xen: Use kcalloc() in xen_init_IRQ() x86: Fix fixmap ordering x86: Fix symbol annotation for arch/x86/lib/clear_page_64.S::clear_page_c
| * x86: fix usage of bios intcall()Akinobu Mita2009-07-04
| | | | | | | | | | | | | | | | | | | | | | Some intcall() misuses the input biosregs as output in cf06de7b9cdd3efee7a59dced1977b3c21d43732 This fixes the problem vga=ask boot option doesn't show enough modes. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> LKML-Reference: <20090701021307.GA3127@localhost.localdomain> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
| * Merge branch 'amd-iommu/fixes' of ↵Ingo Molnar2009-07-03
| |\ | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
| | * amd-iommu: set evt_buf_size correctlyJoerg Roedel2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | The setting of this variable got lost during the suspend/resume implementation. But keeping this variable zero causes a divide-by-zero error in the interrupt handler. This patch fixes this. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| | * amd-iommu: handle alias entries correctly in init codeJoerg Roedel2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | An alias entry in the ACPI table means that the device can send requests to the IOMMU with both device ids, its own and the alias. This is not handled properly in the ACPI init code. This patch fixes the issue. Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
| * | x86: Remove unused function lapic_watchdog_ok()Jaswinder Singh Rajput2009-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lapic_watchdog_ok() is a global function but no one is using it. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Yinghai Lu <yinghai@kernel.org> LKML-Reference: <1246554335.2242.29.camel@jaswinder.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Remove unused variable disable_x2apicJaswinder Singh Rajput2009-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | setup_nox2apic() is writing 1 to disable_x2apic but no one is reading it. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Yinghai Lu <yinghai@kernel.org> Cc: Cyrill Gorcunov <gorcunov@gmail.com> LKML-Reference: <1246554239.2242.27.camel@jaswinder.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86, kvm: Fix section mismatches in kvm.cRakib Mullick2009-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The function paravirt_ops_setup() has been refering the variable no_timer_check, which is a __initdata. Thus generates the following warning. paravirt_ops_setup() function is called from kvm_guest_init() which is a __init function. So to fix this we mark paravirt_ops_setup as __init. The sections-check output that warned us about this was: LD arch/x86/built-in.o WARNING: arch/x86/built-in.o(.text+0x166ce): Section mismatch in reference from the function paravirt_ops_setup() to the variable .init.data:no_timer_check The function paravirt_ops_setup() references the variable __initdata no_timer_check. This is often because paravirt_ops_setup lacks a __initdata annotation or the annotation of no_timer_check is wrong. Signed-off-by: Rakib Mullick <rakib.mullick@gmail.com> Acked-by: Avi Kivity <avi@redhat.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <b9df5fa10907012240y356427b8ta4bd07f0efc6a049@mail.gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Add missing annotation to arch/x86/lib/copy_user_64.S::copy_to_userMike Galbraith2009-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | While examining symbol generation in perf_counter tools, I noticed that copy_to_user() had no size in vmlinux's symtab. Signed-off-by: Mike Galbraith <efault@gmx.de> Acked-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> LKML-Reference: <1246512440.13293.3.camel@marge.simson.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Fix fixmap page order for FIX_TEXT_POKE0,1Mathieu Desnoyers2009-07-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Masami reported: > Since the fixmap pages are assigned higher address to lower, > text_poke() has to use it with inverted order (FIX_TEXT_POKE1 > to FIX_TEXT_POKE0). I prefer to just invert the order of the fixmap declaration. It's simpler and more straightforward. Backward fixmaps seems to be used by both x86 32 and 64. It's really rare but a nasty bug, because it only hurts when instructions to patch are crossing a page boundary. If this happens, the fixmap write accesses will spill on the following fixmap, which may very well crash the system. And this does not crash the system, it could leave illegal instructions in place. Thanks Masami for finding this. It seems to have crept into the 2.6.30-rc series, so this calls for a -stable inclusion. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Acked-by: Masami Hiramatsu <mhiramat@redhat.com> Cc: <stable@kernel.org> LKML-Reference: <20090701213722.GH19926@Krystal> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Fix printk call in print_local_apic()Ingo Molnar2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of this: [ 75.690022] <7>printing local APIC contents on CPU#0/0: [ 75.704406] ... APIC ID: 00000000 (0) [ 75.707905] ... APIC VERSION: 00060015 [ 75.722551] ... APIC TASKPRI: 00000000 (00) [ 75.725473] ... APIC PROCPRI: 00000000 [ 75.728592] ... APIC LDR: 00000001 [ 75.742137] ... APIC SPIV: 000001ff [ 75.744101] ... APIC ISR field: [ 75.746648] 0123456789abcdef0123456789abcdef [ 75.746649] <7>00000000000000000000000000000000 Improve the code to be saner and simpler and just print out the bitfield in a single line using hexa values - not as a (rather pointless) binary bitfield. Partially reused Linus's initial fix for this. Reported-and-Tested-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <4A4C43BC.90506@kernel.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Declare check_efer() before it gets usedJaswinder Singh Rajput2009-07-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This sparse warning: arch/x86/mm/init.c:83:16: warning: symbol 'check_efer' was not declared. Should it be static? triggers because check_efer() is not decalared before using it. asm/proto.h includes the declaration of check_efer(), so including asm/proto.h to fix that - this also addresses the sparse warning. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Andrew Morton <akpm@linux-foundation.org> LKML-Reference: <1246458263.6940.22.camel@hpdv5.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Mark device_nb as static and fix NULL noiseJaswinder Singh Rajput2009-07-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This sparse warning: arch/x86/kernel/amd_iommu.c:1195:23: warning: symbol 'device_nb' was not declared. Should it be static? triggers because device_nb is global but is only used in a single .c file. change device_nb to static to fix that - this also addresses the sparse warning. This sparse warning: arch/x86/kernel/amd_iommu.c:1766:10: warning: Using plain integer as NULL pointer triggers because plain integer 0 is used in place of a NULL pointer. change 0 to NULL to fix that - this also address the sparse warning. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Cc: Joerg Roedel <joerg.roedel@amd.com> LKML-Reference: <1246458194.6940.20.camel@hpdv5.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Remove double declaration of MSR_P6_EVNTSEL0 and MSR_P6_EVNTSEL1Jaswinder Singh Rajput2009-07-01
| | | | | | | | | | | | | | | | | | | | | | | | MSR_P6_EVNTSEL0 and MSR_P6_EVNTSEL1 is already declared in msr-index.h. Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> LKML-Reference: <1246450778.6940.8.camel@hpdv5.satnam> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Fix fixmap orderingJan Beulich2009-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The merge of the 32- and 64-bit fixmap headers made a latent bug on x86-64 a real one: with the right config settings it is possible for FIX_OHCI1394_BASE to overlap the FIX_BTMAP_* range. Signed-off-by: Jan Beulich <jbeulich@novell.com> Cc: <stable@kernel.org> # for 2.6.30.x LKML-Reference: <4A4A0A8702000078000082E8@vpn.id2.novell.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | x86: Fix symbol annotation for arch/x86/lib/clear_page_64.S::clear_page_cMike Galbraith2009-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Noticed the zero-sized function symbol while looking at 'perf' profiles, it causes the profiler to display those addresses in hexa. Turns out that this was wrong/bogus for an eternity. Signed-off-by: Mike Galbraith <efault@gmx.de> Acked-by: Alexander van Heukelum <heukelum@fastmail.fm> Acked-by: Cyrill Gorcunov <gorcunov@gmail.com> LKML-Reference: <1246366820.6538.1.camel@marge.simson.net> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2009-07-06
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/home/rmk/linux-2.6-arm: [ARM] amba: fix amba device resources [ARM] pgtable: file pte layout documentation [ARM] pgtable: swp pte layout documentation, definitions, and check [ARM] export __cpu_flush_dcache_page [ARM] 5576/1: Update kb9202_defconfig [ARM] 5581/1: U300 clock updates [ARM] 5579/1: Updated U300 defconfig
| * | | [ARM] pgtable: file pte layout documentationRussell King2009-07-05
| | | | | | | | | | | | | | | | | | | | | | | | Document the layout of our file PTE entries. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] pgtable: swp pte layout documentation, definitions, and checkRussell King2009-07-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Document the layout of our swp PTE entries, adding definitions for the bit masks/shifts/sizes, and implement MAX_SWAPFILES_CHECK() such that we fail to build if we are unable to properly encode the swp type field. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] export __cpu_flush_dcache_pageRussell King2009-07-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now required for libsas: Kernel: arch/arm/boot/Image is ready Kernel: arch/arm/boot/zImage is ready Building modules, stage 2. MODPOST 1096 modules ERROR: "xscale_flush_kern_dcache_page" [drivers/scsi/libsas/libsas.ko] undefined! Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] 5576/1: Update kb9202_defconfigMatthias Kaehlcke2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The default configuration file for the KwikByte kb9202 board was based on a 2.6.13-rc2 kernel and doesn't produce a bootable kernel. Update the configuration in order to produce a bootable image. Signed-off-by: Matthias Kaehlcke <matthias@kaehlcke.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] 5581/1: U300 clock updatesLinus Walleij2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a few default locks to the clocks (the clocks were used before the locks were initialized by code), then renames the clocks a bit to fit with the latest driver names (some changed during review). Lastly it moves the initialization of the clock debugfs entry to module_init() initcall level since the debugfs isn't up in core_initcall(). Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [ARM] 5579/1: Updated U300 defconfigLinus Walleij2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This defconfig update selects all the new U300 drivers merged for 2.6.31-rc1 in the merge window and add defaults for the new config options. It compiles and boots nicely from initramfs on the U300. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
* | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-07-06
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: PCI: Fix IRQ swizzling for ARI-enabled devices ia64/PCI: adjust section annotation for pcibios_setup() x86/PCI: get root CRS before scanning children x86/PCI: fix boundary checking when using root CRS PCI MSI: Fix restoration of MSI/MSI-X mask states in suspend/resume PCI MSI: Unmask MSI if setup failed PCI MSI: shorten PCI_MSIX_ENTRY_* symbol names PCI: make pci_name() take const argument PCI: More PATA quirks for not entering D3 PCI: fix kernel-doc warnings PCI: check if bus has a proper bridge device before triggering SBR PCI: remove pci_dac_dma_... APIs on mn10300 PCI ECRC: Remove unnecessary semicolons PCI MSI: Return if alloc_msi_entry for MSI-X failed
| * | | | ia64/PCI: adjust section annotation for pcibios_setup()Ingo Molnar2009-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Should be __init. Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| * | | | x86/PCI: get root CRS before scanning childrenYinghai Lu2009-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows us to remove adjust_transparent_bridge_resources and give x86_pci_root_bus_res_quirks a chance when _CRS is not used or not there. Acked-by: Gary Hade <garyhade@us.ibm.com> Tested-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| * | | | x86/PCI: fix boundary checking when using root CRSYinghai Lu2009-06-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Don't touch info->res_num if we are out of space. Acked-by: Gary Hade <garyhade@us.ibm.com> Tested-by: Gary Hade <garyhade@us.ibm.com> Signed-off-by: Yinghai Lu <yinghai@kernel.org> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
| * | | | PCI: remove pci_dac_dma_... APIs on mn10300Fernando Luis Vázquez Cao2009-06-29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It seems that mn10300 made it upstream after Jan Beulich's pci_dac_dma_* cleanup work and still defines pci_dac_dma_supported(). This API is not required by the PCI subsystem anymore, so remove it. Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
* | | | | Merge branch 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblazeLinus Torvalds2009-07-06
|\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'fixes-for-linus' of git://git.monstr.eu/linux-2.6-microblaze: microblaze: Fix cast warning for init.c microblaze: Wire up new syscalls microblaze: use generic syscalls.h microblaze: clean up signal handling microblaze: convert all simple headers to use asm-generic microblaze: use the generic lib/checksum.c microblaze: fall back on generic header files for the ABI
| * | | | | microblaze: Fix cast warning for init.cMichal Simek2009-07-06
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | | | microblaze: Wire up new syscallsMichal Simek2009-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Wire up new syscalls rt_tgsigqueueinfo and perf_counter_open. Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | | | microblaze: use generic syscalls.hArnd Bergmann2009-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The prototypes in syscalls.h all make sense for microblaze, but for some of them, the actual implementation in sys_microblaze.c needs to be adapted. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | | | microblaze: clean up signal handlingArnd Bergmann2009-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When legacy signal handling is disabled, the arch/microblaze/kernel/signal.c implementation can be much simpler, as most of it is handled generically from kernel/signal.c. This is also a prerequisite for using the generic asm/unistd.h, which does not provide __NR_sigreturn, because this macro is referenced by the current signal.c implementation. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | | | microblaze: convert all simple headers to use asm-genericRemis Lima Baima2009-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All the simple microblaze header files were adapted to use their asm-generic implementations. These files are more simple and were quite straightforward to change. fb.h, vga.h and parport.h previously did not exist, using the generic version makes it possible to build more drivers successfully in allyesonfig. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | | | microblaze: use the generic lib/checksum.cRemis Lima Baima2009-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The microblaze checksum code is mostly identical to the asm-generic+lib version, so use that instead. Signed-off-by: Remis Lima Baima <remis.developer@googlemail.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
| * | | | | microblaze: fall back on generic header files for the ABIArnd Bergmann2009-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Almost all of the ABI relevant header files now have generic versions, so use those now in order to reduce the amount of architecture specific code. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Michal Simek <monstr@monstr.eu>
* | | | | | Merge git://git.infradead.org/iommu-2.6Linus Torvalds2009-07-06
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/iommu-2.6: intel-iommu: Don't use identity mapping for PCI devices behind bridges intel-iommu: Use iommu_should_identity_map() at startup time too. intel-iommu: No mapping for non-PCI devices intel-iommu: Restore DMAR_BROKEN_GFX_WA option for broken graphics drivers intel-iommu: Add iommu_should_identity_map() function intel-iommu: Fix reattaching of devices to identity mapping domain intel-iommu: Don't set identity mapping for bypassed graphics devices intel-iommu: Fix dma vs. mm page confusion with aligned_nrpages()
| * | | | | | intel-iommu: Restore DMAR_BROKEN_GFX_WA option for broken graphics driversDavid Woodhouse2009-07-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We need to give people a little more time to fix the broken drivers. Re-introduce this, but tied in properly with the 'iommu=pt' support this time. Change the config option name and make it default to 'no' too. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
* | | | | | | gcov: exclude code operating in userspace from profilingPeter Oberparleiter2009-07-06
| |/ / / / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix for this issue on x86_64: rostedt@goodmis.org wrote: > On bootup of the latest kernel my init segfaults. Debugging it, > I found that vread_tsc (a vsyscall) increments some strange > kernel memory: > > 0000000000000000 <vread_tsc>: > 0: 55 push %rbp > 1: 48 ff 05 00 00 00 00 incq 0(%rip) > # 8 <vread_tsc+0x8> > 4: R_X86_64_PC32 .bss+0x3c > 8: 48 89 e5 mov %rsp,%rbp > b: 66 66 90 xchg %ax,%ax > e: 48 ff 05 00 00 00 00 incq 0(%rip) > # 15 <vread_tsc+0x15> > 11: R_X86_64_PC32 .bss+0x44 > 15: 66 66 90 xchg %ax,%ax > 18: 48 ff 05 00 00 00 00 incq 0(%rip) > # 1f <vread_tsc+0x1f> > 1b: R_X86_64_PC32 .bss+0x4c > 1f: 0f 31 rdtsc > > > Those "incq" is very bad to happen in vsyscall memory, since > userspace can not modify it. You need to make something prevent > profiling of vsyscall memory (like I do with ftrace). Signed-off-by: Peter Oberparleiter <oberpar@linux.vnet.ibm.com> Cc: Ingo Molnar <mingo@elte.hu> Reported-by: Steven Rostedt <rostedt@goodmis.org> Tested-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | | | | | Merge branch 'for-linus' of ↵Linus Torvalds2009-07-04
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6 * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6: (27 commits) parisc: use generic atomic64 on 32-bit parisc: superio: fix build breakage parisc: Fix PCI resource allocation on non-PAT SBA machines parisc: perf: wire up sys_perf_counter_open parisc: add task_pt_regs macro parisc: wire sys_perf_counter_open to sys_ni_syscall parisc: inventory.c, fix bloated stack frame parisc: processor.c, fix bloated stack frame parisc: fix compile warning in mm/init.c parisc: remove dead code from sys_parisc32.c parisc: wire up rt_tgsigqueueinfo parisc: ensure broadcast tlb purge runs single threaded parisc: fix "delay!" timer handling parisc: fix mismatched parenthesis in memcpy.c parisc: Fix gcc 4.4 warning in lba_pci.c parisc: add parameter to read_cr16() parisc: decode_exc.c should include kernel.h parisc: remove obsolete hw_interrupt_type parisc: fix irq compile bugs in arch/parisc/kernel/irq.c parisc: advertise PCI devs after "assign_resources" ... Manually fixed up trivial conflicts in tools/perf/perf.h due to addition of SH vs HPPA perf-counter support.
| * | | | | | parisc: use generic atomic64 on 32-bitKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Somewhat redundant since our atomic_t uses hashed-locks on 32-bit anyway... Maybe we can clean those up to be generic too someday. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: perf: wire up sys_perf_counter_openKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: add task_pt_regs macroKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | needed for perf_counters. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: wire sys_perf_counter_open to sys_ni_syscallKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reserve a syscall slot for sys_perf_counter_open. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: inventory.c, fix bloated stack frameKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pa_pdc_cell struct can be kmalloc'd, so do that instead. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: processor.c, fix bloated stack frameKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The pa_pdc_cell struct can be kmalloc'd, so do that instead. Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: fix compile warning in mm/init.cKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | arch/parisc/mm/init.c: In function 'free_initmem': 381: warning: passing argument 1 of 'memset' makes pointer from integer without a cast Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: remove dead code from sys_parisc32.cChristoph Hellwig2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unless I'm totally missing something get_fd_set32/set_fd_set32 are completely unused. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Grant Grundler <grundler@parisc-linux.org> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: wire up rt_tgsigqueueinfoKyle McMartin2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
| * | | | | | parisc: ensure broadcast tlb purge runs single threadedHelge Deller2009-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The TLB flushing functions on hppa, which causes PxTLB broadcasts on the system bus, needs to be protected by irq-safe spinlocks to avoid irq handlers to deadlock the kernel. The deadlocks only happened during I/O intensive loads and triggered pretty seldom, which is why this bug went so long unnoticed. Signed-off-by: Helge Deller <deller@gmx.de> [edited to use spin_lock_irqsave on UP as well since we'd been locking there all this time anyway, --kyle] Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
generated by cgit v1.2.2 (git 2.25.0) at 2024-12-29 04:08:31 -0500