- 20 Dec, 2013 6 commits
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Kirill A. Shutemov authored
In struct page we have enough space to fit long-size page->ptl there, but we use dynamically-allocated page->ptl if size(spinlock_t) is larger than sizeof(int). It hurts 64-bit architectures with CONFIG_GENERIC_LOCKBREAK, where sizeof(spinlock_t) == 8, but it easily fits into struct page. Signed-off-by:
Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by:
Hugh Dickins <hughd@google.com> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org>
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Johannes Weiner authored
Commit 81c0a2bb ("mm: page_alloc: fair zone allocator policy") meant to bring aging fairness among zones in system, but it was overzealous and badly regressed basic workloads on NUMA systems. Due to the way kswapd and page allocator interacts, we still want to make sure that all zones in any given node are used equally for all allocations to maximize memory utilization and prevent thrashing on the highest zone in the node. While the same principle applies to NUMA nodes - memory utilization is obviously improved by spreading allocations throughout all nodes - remote references can be costly and so many workloads prefer locality over memory utilization. The original change assumed that zone_reclaim_mode would be a good enough predictor for that, but it turned out to be as indicative as a coin flip. Revert the NUMA aspect of the fairness until we can find a proper way to make it configurable and agree on a sane default. Signed-off-by:
Johannes Weiner <hannes@cmpxchg.org> Reviewed-by:
Michal Hocko <mhocko@suse.cz> Signed-off-by:
Mel Gorman <mgorman@suse.de> Cc: <stable@kernel.org> # 3.12 Signed-off-by:
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Mel Gorman authored
This reverts commit 73f038b8. The NUMA behaviour of this patch is less than ideal. An alternative approch is to interleave allocations only within local zones which is implemented in the next patch. Cc: stable@vger.kernel.org Signed-off-by:
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Kirill A. Shutemov authored
Sasha Levin found a NULL pointer dereference that is due to a missing page table lock, which in turn is due to the pmd entry in question being a transparent huge-table entry. The code - introduced in commit 1998cc04 ("mm: make madvise(MADV_WILLNEED) support swap file prefetch") - correctly checks for this situation using pmd_none_or_trans_huge_or_clear_bad(), but it turns out that that function doesn't work correctly. pmd_none_or_trans_huge_or_clear_bad() expected that pmd_bad() would trigger if the transparent hugepage bit was set, but it doesn't do that if pmd_numa() is also set. Note that the NUMA bit only gets set on real NUMA machines, so people trying to reproduce this on most normal development systems would never actually trigger this. Fix it by removing the very subtle (and subtly incorrect) expectation, and instead just checking pmd_trans_huge() explicitly. Reported-by:
Sasha Levin <sasha.levin@oracle.com> Acked-by:
Andrea Arcangeli <aarcange@redhat.com> [ Additionally remove the now stale test for pmd_trans_huge() inside the pmd_bad() case - Linus ] Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/xen/tipLinus Torvalds authored
Pull Xen bugfixes from Konrad Rzeszutek Wilk: - Fix balloon driver for auto-translate guests (PVHVM, ARM) to not use scratch pages. - Fix block API header for ARM32 and ARM64 to have proper layout - On ARM when mapping guests, stick on PTE_SPECIAL - When using SWIOTLB under ARM, don't call swiotlb functions twice - When unmapping guests memory and if we fail, don't return pages which failed to be unmapped. - Grant driver was using the wrong address on ARM. * tag 'stable/for-linus-3.13-rc4-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: xen/balloon: Seperate the auto-translate logic properly (v2) xen/block: Correctly define structures in public headers on ARM32 and ARM64 arm: xen: foreign mapping PTEs are special. xen/arm64: do not call the swiotlb functions twice xen: privcmd: do not return pages which we have failed to unmap XEN: Grant table address, xen_hvm_resume_frames, is a phys_addr not a pfn
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Linus Torvalds authored
Merge tag 'trace-fixes-v3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace Pull ftrace fix from Steven Rostedt: "This fixes a long standing bug in the ftrace profiler. The problem is that the profiler only initializes the online CPUs, and not possible CPUs. This causes issues if the user takes CPUs online or offline while the profiler is running. If we online a CPU after starting the profiler, we lose all the trace information on the CPU going online. If we offline a CPU after running a test and start a new test, it will not clear the old data from that CPU. This bug causes incorrect data to be reported to the user if they online or offline CPUs during the profiling" * tag 'trace-fixes-v3.13-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: ftrace: Initialize the ftrace profiler for each possible cpu
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- 19 Dec, 2013 32 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Ingo Molnar: "An RT group-scheduling fix and the sched-domains topology setup fix from Mel" * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/rt: Fix rq's cpupri leak while enqueue/dequeue child RT entities sched: Assign correct scheduling domain to 'sd_llc'
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "An ABI documentation fix, and a mixed-PMU perf-info-corruption fix" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf: Document the new transaction sample type perf: Disable all pmus on unthrottling and rescheduling
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/soundLinus Torvalds authored
Pull sound fixes from Takashi Iwai: "We have a bit more changes than usual in ASoC here, as it was slipped from the previous update. There are one minr ASoC PCM code fix and ASoC dmaengine fix, in addition of a collection of small ASoC driver fixes. The rest are a couple of HD-audio stable fixups, and a long-standing fix for the paused stream handling. So, all commits look not scary (and hopefully won't give you disastrous holiday season)" * tag 'sound-3.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: ALSA: hda - Add Dell headset detection quirk for one more laptop model ASoC: wm8904: fix DSP mode B configuration ASoC: wm_adsp: Add small delay while polling DSP RAM start ALSA: Add SNDRV_PCM_STATE_PAUSED case in wait_for_avail function ASoC: kirkwood: Fix the CPU DAI rates ASoC: wm5110: Correct HPOUT3 DAPM route typo ALSA: hda - Add Dell headset detection quirk for three laptop models ALSA: hda - Add enable_msi=0 workaround for four HP machines ASoC: don't leak on error in snd_dmaengine_pcm_register ASoC: fsl: imx-wm8962: Don't update bias_level in machine driver ASoC: tegra: fix uninitialized variables in set_fmt ASoC: wm8962: Enable SYSCLK provisonally before fetching generated DSPCLK_DIV ASoC: sam9x5_wm8731: change to work in DSP A mode ASoC: atmel_ssc_dai: add dai trigger ops ASoC: soc-pcm: Use valid condition for snd_soc_dai_digital_mute() in hw_free()
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Takashi Iwai authored
Merge tag 'asoc-v3.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus ASoC: Fixes for v3.13 The fixes here are all driver specific ones, none of which particularly stand out but all of which are useful to users of those drivers.
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Mark Brown authored
Merge remote-tracking branches 'asoc/fix/adsp', 'asoc/fix/arizona', 'asoc/fix/atmel', 'asoc/fix/fsl', 'asoc/fix/kirkwood', 'asoc/fix/tegra', 'asoc/fix/wm8904' and 'asoc/fix/wm8962' into asoc-linus
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Mark Brown authored
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Mark Brown authored
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Linus Torvalds authored
Merge patches from Andrew Morton: "23 fixes and a MAINTAINERS update" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (24 commits) mm/hugetlb: check for pte NULL pointer in __page_check_address() fix build with make 3.80 mm/mempolicy: fix !vma in new_vma_page() MAINTAINERS: add Davidlohr as GPT maintainer mm/memory-failure.c: recheck PageHuge() after hugetlb page migrate successfully mm/compaction: respect ignore_skip_hint in update_pageblock_skip mm/mempolicy: correct putback method for isolate pages if failed mm: add missing dependency in Kconfig sh: always link in helper functions extracted from libgcc mm: page_alloc: exclude unreclaimable allocations from zone fairness policy mm: numa: defer TLB flush for THP migration as long as possible mm: numa: guarantee that tlb_flush_pending updates are visible before page table updates mm: fix TLB flush race between migration, and change_protection_range mm: numa: avoid unnecessary disruption of NUMA hinting during migration mm: numa: clear numa hinting information on mprotect sched: numa: skip inaccessible VMAs mm: numa: avoid unnecessary work on the failure path mm: numa: ensure anon_vma is locked to prevent parallel THP splits mm: numa: do not clear PTE for pte_numa update mm: numa: do not clear PMD during PTE update scan ...
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Jianguo Wu authored
In __page_check_address(), if address's pud is not present, huge_pte_offset() will return NULL, we should check the return value. Signed-off-by:
Jianguo Wu <wujianguo@huawei.com> Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Cc: Mel Gorman <mgorman@suse.de> Cc: qiuxishi <qiuxishi@huawei.com> Cc: Hanjun Guo <guohanjun@huawei.com> Acked-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
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Jan Beulich authored
According to Documentation/Changes, make 3.80 is still being supported for building the kernel, hence make files must not make (unconditional) use of features introduced only in newer versions. Commit 1bf49dd4 ("./Makefile: export initial ramdisk compression config option") however introduced "else ifeq" constructs which make 3.80 doesn't understand. Replace the logic there with more conventional (in the kernel build infrastructure) list constructs (except that the list here is intentionally limited to exactly one element). Signed-off-by:
Jan Beulich <jbeulich@suse.com> Cc: P J P <ppandit@redhat.com> Signed-off-by:
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Wanpeng Li authored
BUG_ON(!vma) assumption is introduced by commit 0bf598d8 ("mbind: add BUG_ON(!vma) in new_vma_page()"), however, even if address = __vma_address(page, vma); and vma->start < address < vma->end page_address_in_vma() may still return -EFAULT because of many other conditions in it. As a result the while loop in new_vma_page() may end with vma=NULL. This patch revert the commit and also fix the potential dereference NULL pointer reported by Dan. http://marc.info/?l=linux-mm&m=137689530323257&w=2 kernel BUG at mm/mempolicy.c:1204! invalid opcode: 0000 [#1] PREEMPT SMP DEBUG_PAGEALLOC CPU: 3 PID: 7056 Comm: trinity-child3 Not tainted 3.13.0-rc3+ #2 task: ffff8801ca5295d0 ti: ffff88005ab20000 task.ti: ffff88005ab20000 RIP: new_vma_page+0x70/0x90 RSP: 0000:ffff88005ab21db0 EFLAGS: 00010246 RAX: fffffffffffffff2 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 0000000008040075 RSI: ffff8801c3d74600 RDI: ffffea00079a8b80 RBP: ffff88005ab21dc8 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: fffffffffffffff2 R13: ffffea00079a8b80 R14: 0000000000400000 R15: 0000000000400000 FS: 00007ff49c6f4740(0000) GS:ffff880244e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff49c68f994 CR3: 000000005a205000 CR4: 00000000001407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffffea00079a8b80 ffffea00079a8bc0 ffffea00079a8ba0 ffff88005ab21e50 ffffffff811adc7a 0000000000000000 ffff8801ca5295d0 0000000464e224f8 0000000000000000 0000000000000002 0000000000000000 ffff88020ce75c00 Call Trace: migrate_pages+0x12a/0x850 SYSC_mbind+0x513/0x6a0 SyS_mbind+0xe/0x10 ia32_do_call+0x13/0x13 Code: 85 c0 75 2f 4c 89 e1 48 89 da 31 f6 bf da 00 02 00 65 44 8b 04 25 08 f7 1c 00 e8 ec fd ff ff 5b 41 5c 41 5d 5d c3 0f 1f 44 00 00 <0f> 0b 66 0f 1f 44 00 00 4c 89 e6 48 89 df ba 01 00 00 00 e8 48 RIP [<ffffffff8119f200>] new_vma_page+0x70/0x90 RSP <ffff88005ab21db0> Signed-off-by:
Wanpeng Li <liwanp@linux.vnet.ibm.com> Reported-by:
Dave Jones <davej@redhat.com> Reported-by:
Naoya Horiguchi <n-horiguchi@ah.jp.nec.com> Reviewed-by:
Bob Liu <bob.liu@oracle.com> Signed-off-by:
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Davidlohr Bueso authored
Add a new entry for the GPT standard. Any future changes will now be routed through linux-efi. Signed-off-by:
Davidlohr Bueso <davidlohr@hp.com> Acked-by:
Matt Fleming <matt.fleming@intel.com> Cc: Jens Axboe <axboe@kernel.dk> Acked-by:
Matt Domsch <Matt_Domsch@dell.com> Signed-off-by:
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Jianguo Wu authored
After a successful hugetlb page migration by soft offline, the source page will either be freed into hugepage_freelists or buddy(over-commit page). If page is in buddy, page_hstate(page) will be NULL. It will hit a NULL pointer dereference in dequeue_hwpoisoned_huge_page(). BUG: unable to handle kernel NULL pointer dereference at 0000000000000058 IP: [<ffffffff81163761>] dequeue_hwpoisoned_huge_page+0x131/0x1d0 PGD c23762067 PUD c24be2067 PMD 0 Oops: 0000 [#1] SMP So check PageHuge(page) after call migrate_pages() successfully. Signed-off-by:
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Joonsoo Kim authored
update_pageblock_skip() only fits to compaction which tries to isolate by pageblock unit. If isolate_migratepages_range() is called by CMA, it try to isolate regardless of pageblock unit and it don't reference get_pageblock_skip() by ignore_skip_hint. We should also respect it on update_pageblock_skip() to prevent from setting the wrong information. Signed-off-by:
Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by:
Vlastimil Babka <vbabka@suse.cz> Reviewed-by:
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Joonsoo Kim authored
queue_pages_range() isolates hugetlbfs pages and putback_lru_pages() can't handle these. We should change it to putback_movable_pages(). Naoya said that it is worth going into stable, because it can break in-use hugepage list. Signed-off-by:
Rafael Aquini <aquini@redhat.com> Reviewed-by:
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Sima Baymani authored
Eliminate the following (rand)config warning by adding missing PROC_FS dependency: warning: (HWPOISON_INJECT && MEM_SOFT_DIRTY) selects PROC_PAGE_MONITOR which has unmet direct dependencies (PROC_FS && MMU) Signed-off-by:
Sima Baymani <sima.baymani@gmail.com> Suggested-by:
David Rientjes <rientjes@google.com> Acked-by:
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Geert Uytterhoeven authored
E.g. landisk_defconfig, which has CONFIG_NTFS_FS=m: ERROR: "__ashrdi3" [fs/ntfs/ntfs.ko] undefined! For "lib-y", if no symbols in a compilation unit are referenced by other units, the compilation unit will not be included in vmlinux. This breaks modules that do reference those symbols. Use "obj-y" instead to fix this. http://kisskb.ellerman.id.au/kisskb/buildresult/8838077/ This doesn't fix all cases. There are others, e.g. udivsi3. This is also not limited to sh, many architectures handle this in the same way. A simple solution is to unconditionally include all helper functions. A more complex solution is to make the choice of "lib-y" or "obj-y" depend on CONFIG_MODULES: obj-$(CONFIG_MODULES) += ... lib-y($CONFIG_MODULES) += ... Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Cc: Paul Mundt <lethal@linux-sh.org> Tested-by:
Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Reviewed-by:
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Johannes Weiner authored
Dave Hansen noted a regression in a microbenchmark that loops around open() and close() on an 8-node NUMA machine and bisected it down to commit 81c0a2bb ("mm: page_alloc: fair zone allocator policy"). That change forces the slab allocations of the file descriptor to spread out to all 8 nodes, causing remote references in the page allocator and slab. The round-robin policy is only there to provide fairness among memory allocations that are reclaimed involuntarily based on pressure in each zone. It does not make sense to apply it to unreclaimable kernel allocations that are freed manually, in this case instantly after the allocation, and incur the remote reference costs twice for no reason. Only round-robin allocations that are usually freed through page reclaim or slab shrinking. Bisected by Dave Hansen. Signed-off-by:
Rik van Riel <riel@redhat.com> Cc: <stable@kernel.org> Signed-off-by:
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Mel Gorman authored
THP migration can fail for a variety of reasons. Avoid flushing the TLB to deal with THP migration races until the copy is ready to start. Signed-off-by:
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Mel Gorman authored
According to documentation on barriers, stores issued before a LOCK can complete after the lock implying that it's possible tlb_flush_pending can be visible after a page table update. As per revised documentation, this patch adds a smp_mb__before_spinlock to guarantee the correct ordering. Signed-off-by:
Paul E. McKenney <paulmck@linux.vnet.ibm.com> Reviewed-by:
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Rik van Riel authored
There are a few subtle races, between change_protection_range (used by mprotect and change_prot_numa) on one side, and NUMA page migration and compaction on the other side. The basic race is that there is a time window between when the PTE gets made non-present (PROT_NONE or NUMA), and the TLB is flushed. During that time, a CPU may continue writing to the page. This is fine most of the time, however compaction or the NUMA migration code may come in, and migrate the page away. When that happens, the CPU may continue writing, through the cached translation, to what is no longer the current memory location of the process. This only affects x86, which has a somewhat optimistic pte_accessible. All other architectures appear to be safe, and will either always flush, or flush whenever there is a valid mapping, even with no permissions (SPARC). The basic race looks like this: CPU A CPU B CPU C load TLB entry make entry PTE/PMD_NUMA fault on entry read/write old page start migrating page change PTE/PMD to new page read/write old page [*] flush TLB reload TLB from new entry read/write new page lose data [*] the old page may belong to a new user at this point! The obvious fix is to flush remote TLB entries, by making sure that pte_accessible aware of the fact that PROT_NONE and PROT_NUMA memory may still be accessible if there is a TLB flush pending for the mm. This should fix both NUMA migration and compaction. [mgorman@suse.de: fix build] Signed-off-by:
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Mel Gorman authored
do_huge_pmd_numa_page() handles the case where there is parallel THP migration. However, by the time it is checked the NUMA hinting information has already been disrupted. This patch adds an earlier check with some helpers. Signed-off-by:
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Mel Gorman authored
On a protection change it is no longer clear if the page should be still accessible. This patch clears the NUMA hinting fault bits on a protection change. Signed-off-by:
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Mel Gorman authored
Inaccessible VMA should not be trapping NUMA hint faults. Skip them. Signed-off-by:
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Mel Gorman authored
If a PMD changes during a THP migration then migration aborts but the failure path is doing more work than is necessary. Signed-off-by:
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Mel Gorman authored
The anon_vma lock prevents parallel THP splits and any associated complexity that arises when handling splits during THP migration. This patch checks if the lock was successfully acquired and bails from THP migration if it failed for any reason. Signed-off-by:
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Mel Gorman authored
The TLB must be flushed if the PTE is updated but change_pte_range is clearing the PTE while marking PTEs pte_numa without necessarily flushing the TLB if it reinserts the same entry. Without the flush, it's conceivable that two processors have different TLBs for the same virtual address and at the very least it would generate spurious faults. This patch only unmaps the pages in change_pte_range for a full protection change. [riel@redhat.com: write pte_numa pte back to the page tables] Signed-off-by:
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Mel Gorman authored
If the PMD is flushed then a parallel fault in handle_mm_fault() will enter the pmd_none and do_huge_pmd_anonymous_page() path where it'll attempt to insert a huge zero page. This is wasteful so the patch avoids clearing the PMD when setting pmd_numa. Signed-off-by:
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Mel Gorman authored
On x86, PMD entries are similar to _PAGE_PROTNONE protection and are handled as NUMA hinting faults. The following two page table protection bits are what defines them _PAGE_NUMA:set _PAGE_PRESENT:clear A PMD is considered present if any of the _PAGE_PRESENT, _PAGE_PROTNONE, _PAGE_PSE or _PAGE_NUMA bits are set. If pmdp_invalidate encounters a pmd_numa, it clears the present bit leaving _PAGE_NUMA which will be considered not present by the CPU but present by pmd_present. The existing caller of pmdp_invalidate should handle it but it's an inconsistent state for a PMD. This patch keeps the state consistent when calling pmdp_invalidate. Signed-off-by:
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Mel Gorman authored
MMU notifiers must be called on THP page migration or secondary MMUs will get very confused. Signed-off-by:
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Mel Gorman authored
Base pages are unmapped and flushed from cache and TLB during normal page migration and replaced with a migration entry that causes any parallel NUMA hinting fault or gup to block until migration completes. THP does not unmap pages due to a lack of support for migration entries at a PMD level. This allows races with get_user_pages and get_user_pages_fast which commit 3f926ab9 ("mm: Close races between THP migration and PMD numa clearing") made worse by introducing a pmd_clear_flush(). This patch forces get_user_page (fast and normal) on a pmd_numa page to go through the slow get_user_page path where it will serialise against THP migration and properly account for the NUMA hinting fault. On the migration side the page table lock is taken for each PTE update. Signed-off-by:
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Vivek Goyal authored
Commit 1b3a5d02 ("reboot: move arch/x86 reboot= handling to generic kernel") moved reboot= handling to generic code. In the process it also removed the code in native_machine_shutdown() which are moving reboot process to reboot_cpu/cpu0. I guess that thought must have been that all reboot paths are calling migrate_to_reboot_cpu(), so we don't need this special handling. But kexec reboot path (kernel_kexec()) is not calling migrate_to_reboot_cpu() so above change broke kexec. Now reboot can happen on non-boot cpu and when INIT is sent in second kerneo to bring up BP, it brings down the machine. So start calling migrate_to_reboot_cpu() in kexec reboot path to avoid this problem. Bisected by WANG Chao. Reported-by:
Matthew Whitehead <mwhitehe@redhat.com> Reported-by:
Dave Young <dyoung@redhat.com> Signed-off-by:
Vivek Goyal <vgoyal@redhat.com> Tested-by:
Baoquan He <bhe@redhat.com> Tested-by:
WANG Chao <chaowang@redhat.com> Acked-by:
H. Peter Anvin <hpa@linux.intel.com> Cc: <stable@vger.kernel.org> Signed-off-by:
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- 18 Dec, 2013 2 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usbLinus Torvalds authored
Pull USB fixes from Greg KH: "Here are a few USB fixes for things that have people have reported issues with recently" * tag 'usb-3.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: usb: ohci-at91: fix irq and iomem resource retrieval usb: phy: fix driver dependencies phy: kconfig: add depends on "USB_PHY" to OMAP_USB2 and TWL4030_USB drivers: phy: tweaks to phy_create() drivers: phy: Fix memory leak xhci: Limit the spurious wakeup fix only to HP machines usb: chipidea: fix nobody cared IRQ when booting with host role usb: chipidea: host: Only disable the vbus regulator if it is not NULL usb: serial: zte_ev: move support for ZTE AC2726 from zte_ev back to option usb: cdc-wdm: manage_power should always set needs_remote_wakeup usb: phy-tegra-usb.c: wrong pointer check for remap UTMI usb: phy: twl6030-usb: signedness bug in twl6030_readb() usb: dwc3: power off usb phy in error path usb: dwc3: invoke phy_resume after phy_init
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
Pull tty/serial fixes from Greg KH: "Here are a few fixes for 3.13-rc5 that resolve a number of reported tty and serial driver issues" * tag 'tty-3.13-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: tty: xuartps: Properly guard sysrq specific code n_tty: Fix apparent order of echoed output serial: 8250_dw: add new ACPI IDs serial: 8250_dw: Fix LCR workaround regression tty: Fix hang at ldsem_down_read()
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