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Patch "x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend" has been added to the 4.4-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-xen-zero-msr_ia32_spec_ctrl-before-suspend.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 71c208dd54ab971036d83ff6d9837bae4976e623 Mon Sep 17 00:00:00 2001 From: Juergen Gross <jgross(a)suse.com> Date: Mon, 26 Feb 2018 15:08:18 +0100 Subject: x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend From: Juergen Gross <jgross(a)suse.com> commit 71c208dd54ab971036d83ff6d9837bae4976e623 upstream. Older Xen versions (4.5 and before) might have problems migrating pv guests with MSR_IA32_SPEC_CTRL having a non-zero value. So before suspending zero that MSR and restore it after being resumed. Signed-off-by: Juergen Gross <jgross(a)suse.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Reviewed-by: Jan Beulich <jbeulich(a)suse.com> Cc: stable(a)vger.kernel.org Cc: xen-devel(a)lists.xenproject.org Cc: boris.ostrovsky(a)oracle.com Link: https://lkml.kernel.org/r/20180226140818.4849-1-jgross@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/xen/suspend.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/arch/x86/xen/suspend.c +++ b/arch/x86/xen/suspend.c @@ -1,11 +1,14 @@ #include <linux/types.h> #include <linux/tick.h> +#include <linux/percpu-defs.h> #include <xen/xen.h> #include <xen/interface/xen.h> #include <xen/grant_table.h> #include <xen/events.h> +#include <asm/cpufeatures.h> +#include <asm/msr-index.h> #include <asm/xen/hypercall.h> #include <asm/xen/page.h> #include <asm/fixmap.h> @@ -68,6 +71,8 @@ static void xen_pv_post_suspend(int susp xen_mm_unpin_all(); } +static DEFINE_PER_CPU(u64, spec_ctrl); + void xen_arch_pre_suspend(void) { if (xen_pv_domain()) @@ -84,6 +89,9 @@ void xen_arch_post_suspend(int cancelled static void xen_vcpu_notify_restore(void *data) { + if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL)) + wrmsrl(MSR_IA32_SPEC_CTRL, this_cpu_read(spec_ctrl)); + /* Boot processor notified via generic timekeeping_resume() */ if (smp_processor_id() == 0) return; @@ -93,7 +101,15 @@ static void xen_vcpu_notify_restore(void static void xen_vcpu_notify_suspend(void *data) { + u64 tmp; + tick_suspend_local(); + + if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL)) { + rdmsrl(MSR_IA32_SPEC_CTRL, tmp); + this_cpu_write(spec_ctrl, tmp); + wrmsrl(MSR_IA32_SPEC_CTRL, 0); + } } void xen_arch_resume(void) Patches currently in stable-queue which might be from jgross(a)suse.com are queue-4.4/x86-xen-zero-msr_ia32_spec_ctrl-before-suspend.patch

7 years, 4 months

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[PATCH] libnvdimm, {btt, blk}: do integrity setup before add_disk()

by Vishal Verma

Prior to 25520d55cdb6 ("block: Inline blk_integrity in struct gendisk") we needed to temporarily add a zero-capacity disk before registering for blk-integrity. But adding a zero-capacity disk caused the partition table scanning to bail early, and this resulted in partitions not coming up after a probe of the BTT or blk namespaces. We can now register for integrity before the disk has been added, and this fixes the rescan problems. Fixes: 25520d55cdb6 ("block: Inline blk_integrity in struct gendisk") Reported-by: Dariusz Dokupil <dariusz.dokupil(a)intel.com> Cc: Dan Williams <dan.j.williams(a)intel.com> Cc: stable(a)vger.kernel.org Signed-off-by: Vishal Verma <vishal.l.verma(a)intel.com> --- drivers/nvdimm/blk.c | 3 +-- drivers/nvdimm/btt.c | 3 +-- 2 files changed, 2 insertions(+), 4 deletions(-) diff --git a/drivers/nvdimm/blk.c b/drivers/nvdimm/blk.c index 345acca576b3..1bd7b3734751 100644 --- a/drivers/nvdimm/blk.c +++ b/drivers/nvdimm/blk.c @@ -278,8 +278,6 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk) disk->queue = q; disk->flags = GENHD_FL_EXT_DEVT; nvdimm_namespace_disk_name(&nsblk->common, disk->disk_name); - set_capacity(disk, 0); - device_add_disk(dev, disk); if (devm_add_action_or_reset(dev, nd_blk_release_disk, disk)) return -ENOMEM; @@ -292,6 +290,7 @@ static int nsblk_attach_disk(struct nd_namespace_blk *nsblk) } set_capacity(disk, available_disk_size >> SECTOR_SHIFT); + device_add_disk(dev, disk); revalidate_disk(disk); return 0; } diff --git a/drivers/nvdimm/btt.c b/drivers/nvdimm/btt.c index 2ef544f10ec8..4b95ac513de2 100644 --- a/drivers/nvdimm/btt.c +++ b/drivers/nvdimm/btt.c @@ -1545,8 +1545,6 @@ static int btt_blk_init(struct btt *btt) queue_flag_set_unlocked(QUEUE_FLAG_NONROT, btt->btt_queue); btt->btt_queue->queuedata = btt; - set_capacity(btt->btt_disk, 0); - device_add_disk(&btt->nd_btt->dev, btt->btt_disk); if (btt_meta_size(btt)) { int rc = nd_integrity_init(btt->btt_disk, btt_meta_size(btt)); @@ -1558,6 +1556,7 @@ static int btt_blk_init(struct btt *btt) } } set_capacity(btt->btt_disk, btt->nlba * btt->sector_size >> 9); + device_add_disk(&btt->nd_btt->dev, btt->btt_disk); btt->nd_btt->size = btt->nlba * (u64)btt->sector_size; revalidate_disk(btt->btt_disk); -- 2.14.3

7 years, 4 months

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Patch "x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-xen-zero-msr_ia32_spec_ctrl-before-suspend.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 71c208dd54ab971036d83ff6d9837bae4976e623 Mon Sep 17 00:00:00 2001 From: Juergen Gross <jgross(a)suse.com> Date: Mon, 26 Feb 2018 15:08:18 +0100 Subject: x86/xen: Zero MSR_IA32_SPEC_CTRL before suspend From: Juergen Gross <jgross(a)suse.com> commit 71c208dd54ab971036d83ff6d9837bae4976e623 upstream. Older Xen versions (4.5 and before) might have problems migrating pv guests with MSR_IA32_SPEC_CTRL having a non-zero value. So before suspending zero that MSR and restore it after being resumed. Signed-off-by: Juergen Gross <jgross(a)suse.com> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Reviewed-by: Jan Beulich <jbeulich(a)suse.com> Cc: stable(a)vger.kernel.org Cc: xen-devel(a)lists.xenproject.org Cc: boris.ostrovsky(a)oracle.com Link: https://lkml.kernel.org/r/20180226140818.4849-1-jgross@suse.com Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/xen/suspend.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) --- a/arch/x86/xen/suspend.c +++ b/arch/x86/xen/suspend.c @@ -1,11 +1,14 @@ #include <linux/types.h> #include <linux/tick.h> +#include <linux/percpu-defs.h> #include <xen/xen.h> #include <xen/interface/xen.h> #include <xen/grant_table.h> #include <xen/events.h> +#include <asm/cpufeatures.h> +#include <asm/msr-index.h> #include <asm/xen/hypercall.h> #include <asm/xen/page.h> #include <asm/fixmap.h> @@ -68,6 +71,8 @@ static void xen_pv_post_suspend(int susp xen_mm_unpin_all(); } +static DEFINE_PER_CPU(u64, spec_ctrl); + void xen_arch_pre_suspend(void) { if (xen_pv_domain()) @@ -84,6 +89,9 @@ void xen_arch_post_suspend(int cancelled static void xen_vcpu_notify_restore(void *data) { + if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL)) + wrmsrl(MSR_IA32_SPEC_CTRL, this_cpu_read(spec_ctrl)); + /* Boot processor notified via generic timekeeping_resume() */ if (smp_processor_id() == 0) return; @@ -93,7 +101,15 @@ static void xen_vcpu_notify_restore(void static void xen_vcpu_notify_suspend(void *data) { + u64 tmp; + tick_suspend_local(); + + if (xen_pv_domain() && boot_cpu_has(X86_FEATURE_SPEC_CTRL)) { + rdmsrl(MSR_IA32_SPEC_CTRL, tmp); + this_cpu_write(spec_ctrl, tmp); + wrmsrl(MSR_IA32_SPEC_CTRL, 0); + } } void xen_arch_resume(void) Patches currently in stable-queue which might be from jgross(a)suse.com are queue-4.9/x86-xen-zero-msr_ia32_spec_ctrl-before-suspend.patch

7 years, 4 months

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Patch "x86/platform/intel-mid: Handle Intel Edison reboot correctly" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled x86/platform/intel-mid: Handle Intel Edison reboot correctly to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: x86-platform-intel-mid-handle-intel-edison-reboot-correctly.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 028091f82eefd5e84f81cef81a7673016ecbe78b Mon Sep 17 00:00:00 2001 From: Sebastian Panceac <sebastian(a)resin.io> Date: Wed, 28 Feb 2018 11:40:49 +0200 Subject: x86/platform/intel-mid: Handle Intel Edison reboot correctly From: Sebastian Panceac <sebastian(a)resin.io> commit 028091f82eefd5e84f81cef81a7673016ecbe78b upstream. When the Intel Edison module is powered with 3.3V, the reboot command makes the module stuck. If the module is powered at a greater voltage, like 4.4V (as the Edison Mini Breakout board does), reboot works OK. The official Intel Edison BSP sends the IPCMSG_COLD_RESET message to the SCU by default. The IPCMSG_COLD_BOOT which is used by the upstream kernel is only sent when explicitely selected on the kernel command line. Use IPCMSG_COLD_RESET unconditionally which makes reboot work independent of the power supply voltage. [ tglx: Massaged changelog ] Fixes: bda7b072de99 ("x86/platform/intel-mid: Implement power off sequence") Signed-off-by: Sebastian Panceac <sebastian(a)resin.io> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Acked-by: Andy Shevchenko <andy.shevchenko(a)gmail.com> Cc: stable(a)vger.kernel.org Link: https://lkml.kernel.org/r/1519810849-15131-1-git-send-email-sebastian@resin… Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/x86/platform/intel-mid/intel-mid.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/arch/x86/platform/intel-mid/intel-mid.c +++ b/arch/x86/platform/intel-mid/intel-mid.c @@ -79,7 +79,7 @@ static void intel_mid_power_off(void) static void intel_mid_reboot(void) { - intel_scu_ipc_simple_command(IPCMSG_COLD_BOOT, 0); + intel_scu_ipc_simple_command(IPCMSG_COLD_RESET, 0); } static unsigned long __init intel_mid_calibrate_tsc(void) Patches currently in stable-queue which might be from sebastian(a)resin.io are queue-4.9/x86-platform-intel-mid-handle-intel-edison-reboot-correctly.patch

7 years, 4 months

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Patch "timers: Forward timer base before migrating timers" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled timers: Forward timer base before migrating timers to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: timers-forward-timer-base-before-migrating-timers.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From c52232a49e203a65a6e1a670cd5262f59e9364a0 Mon Sep 17 00:00:00 2001 From: Lingutla Chandrasekhar <clingutla(a)codeaurora.org> Date: Thu, 18 Jan 2018 17:20:22 +0530 Subject: timers: Forward timer base before migrating timers From: Lingutla Chandrasekhar <clingutla(a)codeaurora.org> commit c52232a49e203a65a6e1a670cd5262f59e9364a0 upstream. On CPU hotunplug the enqueued timers of the unplugged CPU are migrated to a live CPU. This happens from the control thread which initiated the unplug. If the CPU on which the control thread runs came out from a longer idle period then the base clock of that CPU might be stale because the control thread runs prior to any event which forwards the clock. In such a case the timers from the unplugged CPU are queued on the live CPU based on the stale clock which can cause large delays due to increased granularity of the outer timer wheels which are far away from base:;clock. But there is a worse problem than that. The following sequence of events illustrates it: - CPU0 timer1 is queued expires = 59969 and base->clk = 59131. The timer is queued at wheel level 2, with resulting expiry time = 60032 (due to level granularity). - CPU1 enters idle @60007, with next timer expiry @60020. - CPU0 is hotplugged at @60009 - CPU1 exits idle and runs the control thread which migrates the timers from CPU0 timer1 is now queued in level 0 for immediate handling in the next softirq because the requested expiry time 59969 is before CPU1 base->clk 60007 - CPU1 runs code which forwards the base clock which succeeds because the next expiring timer. which was collected at idle entry time is still set to 60020. So it forwards beyond 60007 and therefore misses to expire the migrated timer1. That timer gets expired when the wheel wraps around again, which takes between 63 and 630ms depending on the HZ setting. Address both problems by invoking forward_timer_base() for the control CPUs timer base. All other places, which might run into a similar problem (mod_timer()/add_timer_on()) already invoke forward_timer_base() to avoid that. [ tglx: Massaged comment and changelog ] Fixes: a683f390b93f ("timers: Forward the wheel clock whenever possible") Co-developed-by: Neeraj Upadhyay <neeraju(a)codeaurora.org> Signed-off-by: Neeraj Upadhyay <neeraju(a)codeaurora.org> Signed-off-by: Lingutla Chandrasekhar <clingutla(a)codeaurora.org> Signed-off-by: Thomas Gleixner <tglx(a)linutronix.de> Cc: Anna-Maria Gleixner <anna-maria(a)linutronix.de> Cc: linux-arm-msm(a)vger.kernel.org Cc: stable(a)vger.kernel.org Link: https://lkml.kernel.org/r/20180118115022.6368-1-clingutla@codeaurora.org Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- kernel/time/timer.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/kernel/time/timer.c +++ b/kernel/time/timer.c @@ -1884,6 +1884,12 @@ int timers_dead_cpu(unsigned int cpu) spin_lock_irq(&new_base->lock); spin_lock_nested(&old_base->lock, SINGLE_DEPTH_NESTING); + /* + * The current CPUs base clock might be stale. Update it + * before moving the timers over. + */ + forward_timer_base(new_base); + BUG_ON(old_base->running_timer); for (i = 0; i < WHEEL_SIZE; i++) Patches currently in stable-queue which might be from clingutla(a)codeaurora.org are queue-4.9/timers-forward-timer-base-before-migrating-timers.patch

7 years, 4 months

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Patch "parisc: Fix ordering of cache and TLB flushes" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled parisc: Fix ordering of cache and TLB flushes to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: parisc-fix-ordering-of-cache-and-tlb-flushes.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 0adb24e03a124b79130c9499731936b11ce2677d Mon Sep 17 00:00:00 2001 From: John David Anglin <dave.anglin(a)bell.net> Date: Tue, 27 Feb 2018 08:16:07 -0500 Subject: parisc: Fix ordering of cache and TLB flushes MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: John David Anglin <dave.anglin(a)bell.net> commit 0adb24e03a124b79130c9499731936b11ce2677d upstream. The change to flush_kernel_vmap_range() wasn't sufficient to avoid the SMP stalls. The problem is some drivers call these routines with interrupts disabled. Interrupts need to be enabled for flush_tlb_all() and flush_cache_all() to work. This version adds checks to ensure interrupts are not disabled before calling routines that need IPI interrupts. When interrupts are disabled, we now drop into slower code. The attached change fixes the ordering of cache and TLB flushes in several cases. When we flush the cache using the existing PTE/TLB entries, we need to flush the TLB after doing the cache flush. We don't need to do this when we flush the entire instruction and data caches as these flushes don't use the existing TLB entries. The same is true for tmpalias region flushes. The flush_kernel_vmap_range() and invalidate_kernel_vmap_range() routines have been updated. Secondly, we added a new purge_kernel_dcache_range_asm() routine to pacache.S and use it in invalidate_kernel_vmap_range(). Nominally, purges are faster than flushes as the cache lines don't have to be written back to memory. Hopefully, this is sufficient to resolve the remaining problems due to cache speculation. So far, testing indicates that this is the case. I did work up a patch using tmpalias flushes, but there is a performance hit because we need the physical address for each page, and we also need to sequence access to the tmpalias flush code. This increases the probability of stalls. Signed-off-by: John David Anglin <dave.anglin(a)bell.net> Cc: stable(a)vger.kernel.org # 4.9+ Signed-off-by: Helge Deller <deller(a)gmx.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- arch/parisc/include/asm/cacheflush.h | 1 arch/parisc/kernel/cache.c | 57 +++++++++++++++++++---------------- arch/parisc/kernel/pacache.S | 22 +++++++++++++ 3 files changed, 54 insertions(+), 26 deletions(-) --- a/arch/parisc/include/asm/cacheflush.h +++ b/arch/parisc/include/asm/cacheflush.h @@ -25,6 +25,7 @@ void flush_user_icache_range_asm(unsigne void flush_kernel_icache_range_asm(unsigned long, unsigned long); void flush_user_dcache_range_asm(unsigned long, unsigned long); void flush_kernel_dcache_range_asm(unsigned long, unsigned long); +void purge_kernel_dcache_range_asm(unsigned long, unsigned long); void flush_kernel_dcache_page_asm(void *); void flush_kernel_icache_page(void *); void flush_user_dcache_range(unsigned long, unsigned long); --- a/arch/parisc/kernel/cache.c +++ b/arch/parisc/kernel/cache.c @@ -464,10 +464,10 @@ EXPORT_SYMBOL(copy_user_page); int __flush_tlb_range(unsigned long sid, unsigned long start, unsigned long end) { - unsigned long flags, size; + unsigned long flags; - size = (end - start); - if (size >= parisc_tlb_flush_threshold) { + if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) && + end - start >= parisc_tlb_flush_threshold) { flush_tlb_all(); return 1; } @@ -538,13 +538,11 @@ void flush_cache_mm(struct mm_struct *mm struct vm_area_struct *vma; pgd_t *pgd; - /* Flush the TLB to avoid speculation if coherency is required. */ - if (parisc_requires_coherency()) - flush_tlb_all(); - /* Flushing the whole cache on each cpu takes forever on rp3440, etc. So, avoid it if the mm isn't too big. */ - if (mm_total_size(mm) >= parisc_cache_flush_threshold) { + if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) && + mm_total_size(mm) >= parisc_cache_flush_threshold) { + flush_tlb_all(); flush_cache_all(); return; } @@ -552,9 +550,9 @@ void flush_cache_mm(struct mm_struct *mm if (mm->context == mfsp(3)) { for (vma = mm->mmap; vma; vma = vma->vm_next) { flush_user_dcache_range_asm(vma->vm_start, vma->vm_end); - if ((vma->vm_flags & VM_EXEC) == 0) - continue; - flush_user_icache_range_asm(vma->vm_start, vma->vm_end); + if (vma->vm_flags & VM_EXEC) + flush_user_icache_range_asm(vma->vm_start, vma->vm_end); + flush_tlb_range(vma, vma->vm_start, vma->vm_end); } return; } @@ -598,14 +596,9 @@ flush_user_icache_range(unsigned long st void flush_cache_range(struct vm_area_struct *vma, unsigned long start, unsigned long end) { - BUG_ON(!vma->vm_mm->context); - - /* Flush the TLB to avoid speculation if coherency is required. */ - if (parisc_requires_coherency()) + if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) && + end - start >= parisc_cache_flush_threshold) { flush_tlb_range(vma, start, end); - - if ((end - start) >= parisc_cache_flush_threshold - || vma->vm_mm->context != mfsp(3)) { flush_cache_all(); return; } @@ -613,6 +606,7 @@ void flush_cache_range(struct vm_area_st flush_user_dcache_range_asm(start, end); if (vma->vm_flags & VM_EXEC) flush_user_icache_range_asm(start, end); + flush_tlb_range(vma, start, end); } void @@ -621,8 +615,7 @@ flush_cache_page(struct vm_area_struct * BUG_ON(!vma->vm_mm->context); if (pfn_valid(pfn)) { - if (parisc_requires_coherency()) - flush_tlb_page(vma, vmaddr); + flush_tlb_page(vma, vmaddr); __flush_cache_page(vma, vmaddr, PFN_PHYS(pfn)); } } @@ -630,21 +623,33 @@ flush_cache_page(struct vm_area_struct * void flush_kernel_vmap_range(void *vaddr, int size) { unsigned long start = (unsigned long)vaddr; + unsigned long end = start + size; - if ((unsigned long)size > parisc_cache_flush_threshold) + if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) && + (unsigned long)size >= parisc_cache_flush_threshold) { + flush_tlb_kernel_range(start, end); flush_data_cache(); - else - flush_kernel_dcache_range_asm(start, start + size); + return; + } + + flush_kernel_dcache_range_asm(start, end); + flush_tlb_kernel_range(start, end); } EXPORT_SYMBOL(flush_kernel_vmap_range); void invalidate_kernel_vmap_range(void *vaddr, int size) { unsigned long start = (unsigned long)vaddr; + unsigned long end = start + size; - if ((unsigned long)size > parisc_cache_flush_threshold) + if ((!IS_ENABLED(CONFIG_SMP) || !arch_irqs_disabled()) && + (unsigned long)size >= parisc_cache_flush_threshold) { + flush_tlb_kernel_range(start, end); flush_data_cache(); - else - flush_kernel_dcache_range_asm(start, start + size); + return; + } + + purge_kernel_dcache_range_asm(start, end); + flush_tlb_kernel_range(start, end); } EXPORT_SYMBOL(invalidate_kernel_vmap_range); --- a/arch/parisc/kernel/pacache.S +++ b/arch/parisc/kernel/pacache.S @@ -1110,6 +1110,28 @@ ENTRY_CFI(flush_kernel_dcache_range_asm) .procend ENDPROC_CFI(flush_kernel_dcache_range_asm) +ENTRY_CFI(purge_kernel_dcache_range_asm) + .proc + .callinfo NO_CALLS + .entry + + ldil L%dcache_stride, %r1 + ldw R%dcache_stride(%r1), %r23 + ldo -1(%r23), %r21 + ANDCM %r26, %r21, %r26 + +1: cmpb,COND(<<),n %r26, %r25,1b + pdc,m %r23(%r26) + + sync + syncdma + bv %r0(%r2) + nop + .exit + + .procend +ENDPROC_CFI(purge_kernel_dcache_range_asm) + ENTRY_CFI(flush_user_icache_range_asm) .proc .callinfo NO_CALLS Patches currently in stable-queue which might be from dave.anglin(a)bell.net are queue-4.9/parisc-fix-ordering-of-cache-and-tlb-flushes.patch

7 years, 4 months

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Patch "cpufreq: s3c24xx: Fix broken s3c_cpufreq_init()" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled cpufreq: s3c24xx: Fix broken s3c_cpufreq_init() to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: cpufreq-s3c24xx-fix-broken-s3c_cpufreq_init.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 0373ca74831b0f93cd4cdbf7ad3aec3c33a479a5 Mon Sep 17 00:00:00 2001 From: Viresh Kumar <viresh.kumar(a)linaro.org> Date: Fri, 23 Feb 2018 09:38:28 +0530 Subject: cpufreq: s3c24xx: Fix broken s3c_cpufreq_init() From: Viresh Kumar <viresh.kumar(a)linaro.org> commit 0373ca74831b0f93cd4cdbf7ad3aec3c33a479a5 upstream. commit a307a1e6bc0d "cpufreq: s3c: use cpufreq_generic_init()" accidentally broke cpufreq on s3c2410 and s3c2412. These two platforms don't have a CPU frequency table and used to skip calling cpufreq_table_validate_and_show() for them. But with the above commit, we started calling it unconditionally and that will eventually fail as the frequency table pointer is NULL. Fix this by calling cpufreq_table_validate_and_show() conditionally again. Fixes: a307a1e6bc0d "cpufreq: s3c: use cpufreq_generic_init()" Cc: 3.13+ <stable(a)vger.kernel.org> # v3.13+ Signed-off-by: Viresh Kumar <viresh.kumar(a)linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- drivers/cpufreq/s3c24xx-cpufreq.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) --- a/drivers/cpufreq/s3c24xx-cpufreq.c +++ b/drivers/cpufreq/s3c24xx-cpufreq.c @@ -351,7 +351,13 @@ struct clk *s3c_cpufreq_clk_get(struct d static int s3c_cpufreq_init(struct cpufreq_policy *policy) { policy->clk = clk_arm; - return cpufreq_generic_init(policy, ftab, cpu_cur.info->latency); + + policy->cpuinfo.transition_latency = cpu_cur.info->latency; + + if (ftab) + return cpufreq_table_validate_and_show(policy, ftab); + + return 0; } static int __init s3c_cpufreq_initclks(void) Patches currently in stable-queue which might be from viresh.kumar(a)linaro.org are queue-4.9/cpufreq-s3c24xx-fix-broken-s3c_cpufreq_init.patch

7 years, 4 months

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Patch "dax: fix vma_is_fsdax() helper" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled dax: fix vma_is_fsdax() helper to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: dax-fix-vma_is_fsdax-helper.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 230f5a8969d8345fc9bbe3683f068246cf1be4b8 Mon Sep 17 00:00:00 2001 From: Dan Williams <dan.j.williams(a)intel.com> Date: Wed, 21 Feb 2018 17:08:01 -0800 Subject: dax: fix vma_is_fsdax() helper From: Dan Williams <dan.j.williams(a)intel.com> commit 230f5a8969d8345fc9bbe3683f068246cf1be4b8 upstream. Gerd reports that ->i_mode may contain other bits besides S_IFCHR. Use S_ISCHR() instead. Otherwise, get_user_pages_longterm() may fail on device-dax instances when those are meant to be explicitly allowed. Fixes: 2bb6d2837083 ("mm: introduce get_user_pages_longterm") Cc: <stable(a)vger.kernel.org> Reported-by: Gerd Rausch <gerd.rausch(a)oracle.com> Acked-by: Jane Chu <jane.chu(a)oracle.com> Reported-by: Haozhong Zhang <haozhong.zhang(a)intel.com> Reviewed-by: Jan Kara <jack(a)suse.cz> Signed-off-by: Dan Williams <dan.j.williams(a)intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- include/linux/fs.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3048,7 +3048,7 @@ static inline bool vma_is_fsdax(struct v if (!vma_is_dax(vma)) return false; inode = file_inode(vma->vm_file); - if (inode->i_mode == S_IFCHR) + if (S_ISCHR(inode->i_mode)) return false; /* device-dax */ return true; } Patches currently in stable-queue which might be from dan.j.williams(a)intel.com are queue-4.9/dax-fix-vma_is_fsdax-helper.patch

7 years, 4 months

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Patch "ALSA: usb-audio: Add a quirck for B&W PX headphones" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ALSA: usb-audio: Add a quirck for B&W PX headphones to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: alsa-usb-audio-add-a-quirck-for-b-w-px-headphones.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 240a8af929c7c57dcde28682725b29cf8474e8e5 Mon Sep 17 00:00:00 2001 From: Erik Veijola <erik.veijola(a)gmail.com> Date: Fri, 23 Feb 2018 14:06:52 +0200 Subject: ALSA: usb-audio: Add a quirck for B&W PX headphones From: Erik Veijola <erik.veijola(a)gmail.com> commit 240a8af929c7c57dcde28682725b29cf8474e8e5 upstream. The capture interface doesn't work and the playback interface only supports 48 kHz sampling rate even though it advertises more rates. Signed-off-by: Erik Veijola <erik.veijola(a)gmail.com> Cc: <stable(a)vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai(a)suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- sound/usb/quirks-table.h | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) --- a/sound/usb/quirks-table.h +++ b/sound/usb/quirks-table.h @@ -3277,4 +3277,51 @@ AU0828_DEVICE(0x2040, 0x7270, "Hauppauge } }, +{ + /* + * Bower's & Wilkins PX headphones only support the 48 kHz sample rate + * even though it advertises more. The capture interface doesn't work + * even on windows. + */ + USB_DEVICE(0x19b5, 0x0021), + .driver_info = (unsigned long) &(const struct snd_usb_audio_quirk) { + .ifnum = QUIRK_ANY_INTERFACE, + .type = QUIRK_COMPOSITE, + .data = (const struct snd_usb_audio_quirk[]) { + { + .ifnum = 0, + .type = QUIRK_AUDIO_STANDARD_MIXER, + }, + /* Capture */ + { + .ifnum = 1, + .type = QUIRK_IGNORE_INTERFACE, + }, + /* Playback */ + { + .ifnum = 2, + .type = QUIRK_AUDIO_FIXED_ENDPOINT, + .data = &(const struct audioformat) { + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .channels = 2, + .iface = 2, + .altsetting = 1, + .altset_idx = 1, + .attributes = UAC_EP_CS_ATTR_FILL_MAX | + UAC_EP_CS_ATTR_SAMPLE_RATE, + .endpoint = 0x03, + .ep_attr = USB_ENDPOINT_XFER_ISOC, + .rates = SNDRV_PCM_RATE_48000, + .rate_min = 48000, + .rate_max = 48000, + .nr_rates = 1, + .rate_table = (unsigned int[]) { + 48000 + } + } + }, + } + } +}, + #undef USB_DEVICE_VENDOR_SPEC Patches currently in stable-queue which might be from erik.veijola(a)gmail.com are queue-4.9/alsa-usb-audio-add-a-quirck-for-b-w-px-headphones.patch

7 years, 4 months

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Patch "ALSA: hda - Fix pincfg at resume on Lenovo T470 dock" has been added to the 4.9-stable tree

by gregkh＠linuxfoundation.org

This is a note to let you know that I've just added the patch titled ALSA: hda - Fix pincfg at resume on Lenovo T470 dock to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=sum… The filename of the patch is: alsa-hda-fix-pincfg-at-resume-on-lenovo-t470-dock.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable(a)vger.kernel.org> know about it. >From 71db96ddfa72671bd43cacdcc99ca178d90ba267 Mon Sep 17 00:00:00 2001 From: Takashi Iwai <tiwai(a)suse.de> Date: Mon, 26 Feb 2018 15:36:38 +0100 Subject: ALSA: hda - Fix pincfg at resume on Lenovo T470 dock From: Takashi Iwai <tiwai(a)suse.de> commit 71db96ddfa72671bd43cacdcc99ca178d90ba267 upstream. We've added a quirk to enable the recent Lenovo dock support, where it overwrites the pin configs of NID 0x17 and 19, not only updating the pin config cache. It works right after the boot, but the problem is that the pin configs are occasionally cleared when the machine goes to PM. Meanwhile the quirk writes the pin configs only at the pre-probe, so this won't be applied any longer. For addressing that issue, this patch moves the code to overwrite the pin configs into HDA_FIXUP_ACT_INIT section so that it's always applied at both probe and resume time. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195161 Fixes: 61fcf8ece9b6 ("ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform") Cc: <stable(a)vger.kernel.org> Signed-off-by: Takashi Iwai <tiwai(a)suse.de> Signed-off-by: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org> --- sound/pci/hda/patch_realtek.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) --- a/sound/pci/hda/patch_realtek.c +++ b/sound/pci/hda/patch_realtek.c @@ -4480,13 +4480,14 @@ static void alc_fixup_tpt470_dock(struct if (action == HDA_FIXUP_ACT_PRE_PROBE) { spec->parse_flags = HDA_PINCFG_NO_HP_FIXUP; + snd_hda_apply_pincfgs(codec, pincfgs); + } else if (action == HDA_FIXUP_ACT_INIT) { /* Enable DOCK device */ snd_hda_codec_write(codec, 0x17, 0, AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, 0); /* Enable DOCK device */ snd_hda_codec_write(codec, 0x19, 0, AC_VERB_SET_CONFIG_DEFAULT_BYTES_3, 0); - snd_hda_apply_pincfgs(codec, pincfgs); } } Patches currently in stable-queue which might be from tiwai(a)suse.de are queue-4.9/alsa-hda-add-a-power_save-blacklist.patch queue-4.9/alsa-hda-fix-pincfg-at-resume-on-lenovo-t470-dock.patch queue-4.9/alsa-usb-audio-add-a-quirck-for-b-w-px-headphones.patch

7 years, 4 months

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