search for: config_debug_pagealloc

...rnel debugging. Remember to turn off before C pushing to the stable repository! ------------------------------------------------ ===== linux-2.6.10-xen-sparse/arch/xen/configs/xen0_defconfig 1.36 vs edited ===== 165c165 < CONFIG_DEBUG_SLAB=y --- > # CONFIG_DEBUG_SLAB is not set 168c168 < CONFIG_DEBUG_PAGEALLOC=y --- > # CONFIG_DEBUG_PAGEALLOC is not set ===== linux-2.6.10-xen-sparse/arch/xen/configs/xenU_defconfig 1.28 vs edited ===== 135c135 < CONFIG_DEBUG_SLAB=y --- > # CONFIG_DEBUG_SLAB is not set 138c138 < CONFIG_DEBUG_PAGEALLOC=y --- > # CONFIG_DEBUG_PAGEALLOC is not set ----------...

I'm seeing oopses in probe_roms() and pci_find_bios(), apparently because those pages are not mapped under Xen. I'm not sure why I'm seeing this now and not before, but I suspect its because I enabled CONFIG_DEBUG_PAGEALLOC. Anyway, I've got these patches to deal with these cases: --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -276,7 +276,14 @@ static struct resource standard_io_resou #define STANDARD_IO_RESOURCES \ (sizeof standard_io_resources / sizeof standard_io_resources[0]) -#define...

I'm seeing oopses in probe_roms() and pci_find_bios(), apparently because those pages are not mapped under Xen. I'm not sure why I'm seeing this now and not before, but I suspect its because I enabled CONFIG_DEBUG_PAGEALLOC. Anyway, I've got these patches to deal with these cases: --- a/arch/i386/kernel/setup.c +++ b/arch/i386/kernel/setup.c @@ -276,7 +276,14 @@ static struct resource standard_io_resou #define STANDARD_IO_RESOURCES \ (sizeof standard_io_resources / sizeof standard_io_resources[0]) -#define...

...e/linux/mm.h > index b36d08c..35568fc 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1629,5 +1629,21 @@ static inline unsigned int debug_guardpage_minorder(void) { return 0; } > static inline bool page_is_guard(struct page *page) { return false; } > #endif /* CONFIG_DEBUG_PAGEALLOC */ > > +#if (defined(CONFIG_VIRTIO_BALLOON) || \ > + defined(CONFIG_VIRTIO_BALLOON_MODULE)) && defined(CONFIG_COMPACTION) > +extern bool isolate_balloon_page(struct page *); > +extern bool putback_balloon_page(struct page *); > +extern struct address_space *balloon_mappi...

...e/linux/mm.h > index b36d08c..35568fc 100644 > --- a/include/linux/mm.h > +++ b/include/linux/mm.h > @@ -1629,5 +1629,21 @@ static inline unsigned int debug_guardpage_minorder(void) { return 0; } > static inline bool page_is_guard(struct page *page) { return false; } > #endif /* CONFIG_DEBUG_PAGEALLOC */ > > +#if (defined(CONFIG_VIRTIO_BALLOON) || \ > + defined(CONFIG_VIRTIO_BALLOON_MODULE)) && defined(CONFIG_COMPACTION) > +extern bool isolate_balloon_page(struct page *); > +extern bool putback_balloon_page(struct page *); > +extern struct address_space *balloon_mappi...

...ge_poisoning_enabled(void) { return false; } static inline void kernel_poison_pages(struct page *page, int numpages, int enable) { } static inline bool page_is_poisoned(struct page *page) { return false; } +static inline bool page_poison_val_get(u8 *val) { return false; }; #endif #ifdef CONFIG_DEBUG_PAGEALLOC diff --git a/include/linux/poison.h b/include/linux/poison.h index 15927eb..348bf67 100644 --- a/include/linux/poison.h +++ b/include/linux/poison.h @@ -30,13 +30,6 @@ */ #define TIMER_ENTRY_STATIC ((void *) 0x300 + POISON_POINTER_DELTA) -/********** mm/debug-pagealloc.c **********/ -#ifdef CO...

...48eb0f1410d4..a852ed2f204c 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -686,6 +686,7 @@ void prep_compound_page(struct page *page, unsigned int order) if (hpage_pincount_available(page)) atomic_set(compound_pincount_ptr(page), 0); } +EXPORT_SYMBOL_GPL(prep_compound_page); #ifdef CONFIG_DEBUG_PAGEALLOC unsigned int _debug_guardpage_minorder; -- 2.20.1

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's

This patch series is separated from the previous "Virtio-balloon Enhancement" series. The new feature, VIRTIO_BALLOON_F_FREE_PAGE_HINT, implemented by this series enables the virtio-balloon driver to report hints of guest free pages to the host. It can be used to accelerate live migration of VMs. Here is an introduction of this usage: Live migration needs to transfer the VM's

This patchset follows the main idea discussed at 2012 LSFMMS section: "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/ to introduce the required changes to the virtio_balloon driver, as well as changes to the core compaction & migration bits, in order to allow memory balloon pages become movable within a guest. Rafael Aquini (4): mm: introduce compaction

This patchset follows the main idea discussed at 2012 LSFMMS section: "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/ to introduce the required changes to the virtio_balloon driver, as well as changes to the core compaction & migration bits, in order to allow memory balloon pages become movable within a guest. Rafael Aquini (4): mm: introduce compaction

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patchset follows the main idea discussed at 2012 LSFMMS section: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patchset follows the main idea discussed at 2012 LSFMMS section: "Ballooning for transparent huge

...a/mm/page_alloc.c > +++ b/mm/page_alloc.c > @@ -686,6 +686,7 @@ void prep_compound_page(struct page *page, unsigned int order) > if (hpage_pincount_available(page)) > atomic_set(compound_pincount_ptr(page), 0); > } > +EXPORT_SYMBOL_GPL(prep_compound_page); > > #ifdef CONFIG_DEBUG_PAGEALLOC > unsigned int _debug_guardpage_minorder; > -- > 2.20.1 -- Best Regards, Yan Zi -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 854 bytes Desc: OpenPGP digital signature URL: <https://lists.freed...

This patchset follows the main idea discussed at 2012 LSFMMS section: "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/ to introduce the required changes to the virtio_balloon driver, as well as changes to the core compaction & migration bits, in order to allow memory balloon pages become movable within a guest. Rafael Aquini (4): mm: introduce compaction

This patchset follows the main idea discussed at 2012 LSFMMS section: "Ballooning for transparent huge pages" -- http://lwn.net/Articles/490114/ to introduce the required changes to the virtio_balloon driver, as well as changes to the core compaction & migration bits, in order to allow memory balloon pages become movable within a guest. Rafael Aquini (4): mm: introduce compaction

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge

Memory fragmentation introduced by ballooning might reduce significantly the number of 2MB contiguous memory blocks that can be used within a guest, thus imposing performance penalties associated with the reduced number of transparent huge pages that could be used by the guest workload. This patch-set follows the main idea discussed at 2012 LSFMMS session: "Ballooning for transparent huge