- 22 Aug, 2012 2 commits
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Avi Kivity authored
The sub-register used to access the stack (sp, esp, or rsp) is not determined by the address size attribute like other memory references, but by the stack segment's B bit (if not in x86_64 mode). Fix by using the existing stack_mask() to figure out the correct mask. This long-existing bug was exposed by a combination of a27685c3 (emulate invalid guest state by default), which causes many more instructions to be emulated, and a seabios change (possibly a bug) which causes the high 16 bits of esp to become polluted across calls to real mode software interrupts. Signed-off-by: Avi Kivity <avi@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
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Takuya Yoshikawa authored
Although the possible race described in commit 85b70591 KVM: MMU: fix shrinking page from the empty mmu was correct, the real cause of that issue was a more trivial bug of mmu_shrink() introduced by commit 19526396 KVM: MMU: do not iterate over all VMs in mmu_shrink() Here is the bug: if (kvm->arch.n_used_mmu_pages > 0) { if (!nr_to_scan--) break; continue; } We skip VMs whose n_used_mmu_pages is not zero and try to shrink others: in other words we try to shrink empty ones by mistake. This patch reverses the logic so that mmu_shrink() can free pages from the first VM whose n_used_mmu_pages is not zero. Note that we also add comments explaining the role of nr_to_scan which is not practically important now, hoping this will be improved in the future. Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> Cc: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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- 16 Aug, 2012 3 commits
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Alan Cox authored
Put the parameters the right way around Addresses https://bugzilla.kernel.org/show_bug.cgi?id=44031Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alexander Graf <agraf@suse.de>
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Alexander Graf authored
When we map a page that wasn't icache cleared before, do so when first mapping it in KVM using the same information bits as the Linux mapping logic. That way we are 100% sure that any page we map does not have stale entries in the icache. Signed-off-by: Alexander Graf <agraf@suse.de>
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Paul Mackerras authored
In handling the H_CEDE hypercall, if this vcpu has already been prodded (with the H_PROD hypercall, which Linux guests don't in fact use), we branch to a numeric label '1f'. Unfortunately there is another '1:' label before the one that we want to jump to. This fixes the problem by using a textual label, 'kvm_cede_prodded'. It also changes the label for another longish branch from '2:' to 'kvm_cede_exit' to avoid a possible future problem if code modifications add another numeric '2:' label in between. Signed-off-by: Paul Mackerras <paulus@samba.org> Signed-off-by: Alexander Graf <agraf@suse.de>
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- 05 Aug, 2012 1 commit
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Gleb Natapov authored
When MSR_KVM_PV_EOI_EN was added to msrs_to_save array KVM_SAVE_MSRS_BEGIN was not updated accordingly. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
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- 04 Aug, 2012 15 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfsLinus Torvalds authored
Pull VFS fixes and cleanups from Al Viro. Most of this is the series to remove sync_supers() and the ->write_supers VFS callback from Artem Bityutskiy. One commit to do the actual removal work, a whole series of commits to fix up stale comments etc all over the tree. There's also a regression fix for an incorrect use of mnt_drop_write() in do_dentry_open(). * 'for-linus-2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: missed mnt_drop_write() in do_dentry_open() UBIFS: nuke pdflush from comments gfs2: nuke pdflush from comments drbd: nuke pdflush from comments nilfs2: nuke write_super from comments hfs: nuke write_super from comments vfs: nuke pdflush from comments jbd/jbd2: nuke write_super from comments btrfs: nuke pdflush from comments btrfs: nuke write_super from comments ext4: nuke pdflush from comments ext4: nuke write_super from comments ext3: nuke write_super from comments Documentation: fix the VM knobs descritpion WRT pdflush Documentation: get rid of write_super vfs: kill write_super and sync_supers
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Al Viro authored
This one ought to be __mnt_drop_write(), to match __mnt_want_write() in the beginning... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The pdflush thread is long gone, so this patch removes references to pdflush from UBIFS comments. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The pdflush thread is long gone, so this patch removes references to pdflush from gfs comments. Cc: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The pdflush thread is long gone, so this patch removes references to pdflush from drbd comments. Cc: drbd-dev@lists.linbit.com Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from ntfs. Cc: KONISHI Ryusuke <konishi.ryusuke@lab.ntt.co.jp> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from hfs. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The pdflush thread is long gone, so this patch removes references to pdflush from vfs comments. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from various jbd and jbd2. Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Jan Kara <jack@suse.cz> Cc: "Theodore Ts'o" <tytso@mit.edu> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The pdflush thread is long gone, so this patch removes references to pdflush from btrfs comments. Cc: Chris Mason <chris.mason@fusionio.com> Cc: linux-btrfs@vger.kernel.org Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from btrfs. Cc: Chris Mason <chris.mason@fusionio.com> Cc: linux-btrfs@vger.kernel.org Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The pdflush thread is long gone, so this patch removes references to pdflush from ext4 comments. Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from ext3. Cc: "Theodore Ts'o" <tytso@mit.edu> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from ext3. Cc: Jan Kara <jack@suse.cz> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andreas Dilger <adilger.kernel@dilger.ca> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
The pdflush thread is long gone, however we still mention it incorrectly in the kernel documentation. This patch fixes the situation. Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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- 03 Aug, 2012 18 commits
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Artem Bityutskiy authored
The '->write_super' superblock method is gone, and this patch removes all the references to 'write_super' from various pieces of the kernel documentation. Cc: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Artem Bityutskiy authored
Finally we can kill the 'sync_supers' kernel thread along with the '->write_super()' superblock operation because all the users are gone. Now every file-system is supposed to self-manage own superblock and its dirty state. The nice thing about killing this thread is that it improves power management. Indeed, 'sync_supers' is a source of monotonic system wake-ups - it woke up every 5 seconds no matter what - even if there were no dirty superblocks and even if there were no file-systems using this service (e.g., btrfs and journalled ext4 do not need it). So it was wasting power most of the time. And because the thread was in the core of the kernel, all systems had to have it. So I am quite happy to make it go away. Interestingly, this thread is a left-over from the pdflush kernel thread which was a self-forking kernel thread responsible for all the write-back in old Linux kernels. It was turned into per-block device BDI threads, and 'sync_supers' was a left-over. Thus, R.I.P, pdflush as well. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linuxLinus Torvalds authored
Pull ACPI and power management fixes from Len Brown: "A 3.3 sleep regression fixed, numa bugfix, plus some minor cleanups" * 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: ACPI processor: Fix tick_broadcast_mask online/offline regression ACPI: Only count valid srat memory structures ACPI: Untangle a return statement for better readability ACPI / PCI: Do not try to acquire _OSC control if that is hopeless ACPI: delete _GTS/_BFS support ACPI/x86: revert 'x86, acpi: Call acpi_enter_sleep_state via an asmlinkage C function from assembler' ACPI: replace strlen("string") with sizeof("string") -1 ACPI / PM: Fix build warning in sleep.c for CONFIG_ACPI_SLEEP unset
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git://git.open-osd.org/linux-open-osdLinus Torvalds authored
Pull exofs update from Boaz Harrosh: "They are all mostly fixes, except the most important patch by Artem Bityutskiy which removes the use of s_dirt. After this patch s_dirt can be completely removed from the tree." * 'for-linus' of git://git.open-osd.org/linux-open-osd: ore: Fix out-of-bounds access in _ios_obj() exofs: Use proper max_IO calculations from ore exofs: Fix __r4w_get_page when offset is beyond i_size exofs: stop using s_dirt exofs: readpage_strip: Add a BUG_ON to check for PageLocked(page)
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull KVM bug fixes from Marcelo Tosatti: - Fix DS/ES segment register corruption on x86_32. - Fix kvmclock wallclock migration offset. - Fix PIT interrupt ACK vs system reset logic bug. * git://git.kernel.org/pub/scm/virt/kvm/kvm: KVM: VMX: Fix ds/es corruption on i386 with preemption KVM: x86: apply kvmclock offset to guest wall clock time KVM: PIC: call ack notifiers for irqs that are dropped form irr
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "A bunch of small fixes for ASoC, mainly against regressions due to the defaulting regmap i/o, in addition to a HD-audio fixup." * tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ASoC: core: Fix check before defaulting to regmap ALSA: hda - Support dock on Lenovo Thinkpad T530 with ALC269VC ASoC: wm8962: Allow VMID time to fully ramp ASoC: AC97 doesn't use regmap by default ASoC: sgtl5000: enable VAG_POWER for LINE_IN ASoC: ab8500: Inform SoC Core that we have our own I/O arrangements ASoC: omap: Add missing modules aliases to get sound working on omap devices sound: tegra_alc5632: Adjust to of_get_named_gpio() change sound: tegra_wm8903: Adjust to of_get_named_gpio() change ASoC: mc13783: Provide codec->control_data ASoC: ux500: Include the correct header files ASoC: wm8994: Hold runtime PM reference while handling mic and jack IRQs ASoC: sgtl5000: remove unneeded snd_soc_dapm_new_widgets in probe ASoC: mxs-saif: set a base clock rate for EXTMASTER mode work ASoC: mxs-saif: fix clock prepare and enable unbalance issue ASoC: wm8994: Ensure there are enough BCLKs for four channels
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull futex fixes from Ingo Molnar: "A couple of futex fixes from Darren Hart: two bugs reported by Dave Jones (found with his trinity test) and Dan Carpenter through static analysis. The third found while debugging the first two." * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: futex: Forbid uaddr == uaddr2 in futex_wait_requeue_pi() futex: Fix bug in WARN_ON for NULL q.pi_state futex: Test for pi_mutex on fault in futex_wait_requeue_pi()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Various fixes" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86-64, kcmp: The kcmp system call can be common arch/x86/kernel/kdebugfs.c: Ensure a consistent return value in error case x86/mce: Add quirk for instruction recovery on Sandy Bridge processors x86/mce: Move MCACOD defines from mce-severity.c to <asm/mce.h> x86/ioapic: Fix NULL pointer dereference on CPU hotplug after disabling irqs x86, nops: Missing break resulting in incorrect selection on Intel x86: CONFIG_CC_STACKPROTECTOR=y is no longer experimental
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Ingo Molnar: "One regression fix, and a couple of cleanups that clean up the code flow in areas that had high-profile bugs recently." * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: time: Remove all direct references to timekeeper time: Clean up offs_real/wall_to_mono and offs_boot/total_sleep_time updates time: Clean up stray newlines time/jiffies: Rename ACTHZ to SHIFTED_HZ time/jiffies: Allow CLOCK_TICK_RATE to be undefined time: Fix casting issue in tk_set_xtime and tk_xtime_add
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "Fixes and two late cleanups" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/cleanups: Add load balance cpumask pointer to 'struct lb_env' sched: Fix comment about PREEMPT_ACTIVE bit location sched: Fix minor code style issues sched: Use task_rq_unlock() in __sched_setscheduler() sched/numa: Add SD_PERFER_SIBLING to CPU domain
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "Fix merge window fallout and fix sleep profiling (this was always broken, so it's not a fix for the merge window - we can skip this one from the head of the tree)." * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/trace: Add ability to set a target task for events perf/x86: Fix USER/KERNEL tagging of samples properly perf/x86/intel/uncore: Make UNCORE_PMU_HRTIMER_INTERVAL 64-bit
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fix from Ingo Molnar. * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: genirq: Allow irq chips to mark themself oneshot safe
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git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdbLinus Torvalds authored
Pull KGDB/KDB/usb-dbgp fixes and cleanups from Jason Wessel: "There are no new features, those will be delayed to the 3.7 window. There are only fixes/cleanup against the usual kernel churn and we are removing more lines than we add: - usb-dbgp - increase the controller wait time to come out of halt. - kdb - Remove unused KDB_FLAG_ONLY_DO_DUMP code and cpu in more prompt - debug core - pass NMI type on archs that provide NMI types" * tag 'for_linux-3.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jwessel/kgdb: USB: echi-dbgp: increase the controller wait time to come out of halt. kernel/debug: Make use of KGDB_REASON_NMI kdb: Remove cpu from the more prompt kdb: Remove unused KDB_FLAG_ONLY_DO_DUMP
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68kLinus Torvalds authored
Pull m68k updates from Geert Uytterhoeven. * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k: m68k: Make sys_atomic_cmpxchg_32 work on classic m68k m68k/apollo: Rename "timer" to "apollo_timer" zorro: Remove unused zorro_bus.devices m68k: Remove never used asm/shm.h m68k/sun3: Remove unselectable code in prom_init() m68k: Use asm-generic version of <asm/sections.h> m68k: Replace m68k-specific _[se]bss by generic __bss_{start,stop} mtd/uclinux: Use generic __bss_stop instead of _ebss m68knommu: Allow ColdFire CPUs to use unaligned accesses m68k: Remove five unused headers m68k: CPU32 does not support unaligned accesses m68k: Introduce config option CPU_HAS_NO_UNALIGNED m68k: delay, muldi3 - Use CONFIG_CPU_HAS_NO_MULDIV64 m68k: Move CPU_HAS_* config options m68k: Remove duplicate FPU config option m68knommu: Clean up printing of sections m68k: Use asm-generic version of <asm/types.h> m68k: Use Kbuild logic to import asm-generic headers
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Len Brown authored
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Feng Tang authored
In commit 99b72508 "ACPI processor hotplug: Delay acpi_processor_start() call for hotplugged cores", acpi_processor_hotplug(pr) was wrongly replaced by acpi_processor_cst_has_changed() inside the acpi_cpu_soft_notify(). This patch will restore it back, fixing the tick_broadcast_mask regression: https://lkml.org/lkml/2012/7/30/169Signed-off-by: Feng Tang <feng.tang@intel.com> Cc: Thomas Renninger <trenn@suse.de> Cc: <stable@vger.kernel.org> # 3.3+ Reviewed-by: Rafael J. Wysocki <rjw@sisk.pl> Reviewed-by: Deepthi Dharwar <deepthi@linux.vnet.ibm.com> Signed-off-by: Len Brown <len.brown@intel.com>
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Thomas Renninger authored
Otherwise you could run into: WARN_ON in numa_register_memblks(), because node_possible_map is zero References: https://bugzilla.novell.com/show_bug.cgi?id=757888 On this machine (ProLiant ML570 G3) the SRAT table contains: - No processor affinities - One memory affinity structure (which is set disabled) CC: Per Jessen <per@opensuse.org> CC: Andi Kleen <andi@firstfloor.org> Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
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Thomas Renninger authored
No functional change. Signed-off-by: Thomas Renninger <trenn@suse.de> Signed-off-by: Len Brown <len.brown@intel.com>
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- 02 Aug, 2012 1 commit
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Linus Torvalds authored
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