search for: config_arch_enable_thp_migr

...p.h > @@ -562,6 +562,16 @@ extern struct page *alloc_pages_vma(gfp_t gfp_mask, int order, > alloc_pages_vma(gfp_mask, 0, vma, addr, numa_node_id(), false) > #define alloc_page_vma_node(gfp_mask, vma, addr, node) \ > alloc_pages_vma(gfp_mask, 0, vma, addr, node, false) > +#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION > +extern struct page *alloc_transhugepage(struct vm_area_struct *vma, > + unsigned long addr); > +#else > +static inline struct page *alloc_transhugepage(struct vm_area_struct *vma, > + unsigned long addr) > +{ > + return NULL; > +} > +#endif > > ext...

....h +++ b/include/linux/gfp.h @@ -562,6 +562,16 @@ extern struct page *alloc_pages_vma(gfp_t gfp_mask, int order, alloc_pages_vma(gfp_mask, 0, vma, addr, numa_node_id(), false) #define alloc_page_vma_node(gfp_mask, vma, addr, node) \ alloc_pages_vma(gfp_mask, 0, vma, addr, node, false) +#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION +extern struct page *alloc_transhugepage(struct vm_area_struct *vma, + unsigned long addr); +#else +static inline struct page *alloc_transhugepage(struct vm_area_struct *vma, + unsigned long addr) +{ + return NULL; +} +#endif extern unsigned long __get_free_pages(gfp_t gfp_mask, un...

...huge_page(page); - unlock_page(page); put_page(page); - if (ret) - return migrate_vma_collect_skip(start, end, - walk); - if (pmd_none(*pmdp)) - return migrate_vma_collect_hole(start, end, -1, - walk); + return migrate_vma_collect_skip(start, end, walk); + } +#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION + if ((start & HPAGE_PMD_MASK) == start && + start + HPAGE_PMD_SIZE == end) { + struct page_vma_mapped_walk vmw = { + .vma = vma, + .address = start, + .pmd = pmdp, + .ptl = ptl, + }; + + migrate->src[migrate->npages] = write | + migrate_pfn(page_to...

...ut_page(page); > - if (ret) > - return migrate_vma_collect_skip(start, end, > - walk); > - if (pmd_none(*pmdp)) > - return migrate_vma_collect_hole(start, end, -1, > - walk); > + return migrate_vma_collect_skip(start, end, walk); > + } > +#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION > + if ((start & HPAGE_PMD_MASK) == start && > + start + HPAGE_PMD_SIZE == end) { > + struct page_vma_mapped_walk vmw = { > + .vma = vma, > + .address = start, > + .pmd = pmdp, > + .ptl = ptl, > + }; > + > + migrate->src[migr...

These patches apply to linux-5.8.0-rc1. Patches 1-3 should probably go into 5.8, the others can be queued for 5.9. Patches 4-6 improve the HMM self tests. Patch 7-8 prepare nouveau for the meat of this series which adds support and testing for compound page mapping of system memory (patches 9-11) and compound page migration to device private memory (patches 12-16). Since these changes are split

...ruct mm_struct *mm, unsigned long addr) +{ + pgd_t *pgdp; + p4d_t *p4dp; + pud_t *pudp; + + pgdp = pgd_offset(mm, addr); + p4dp = p4d_alloc(mm, pgdp, addr); + if (!p4dp) + return NULL; + pudp = pud_alloc(mm, p4dp, addr); + if (!pudp) + return NULL; + return pmd_alloc(mm, pudp, addr); +} + +#ifdef CONFIG_ARCH_ENABLE_THP_MIGRATION +/* + * This code closely follows: + * do_huge_pmd_anonymous_page() + * __do_huge_pmd_anonymous_page() + * except that the page being inserted is likely to be a device private page + * instead of an allocated or zero page. + */ +static int insert_huge_pmd_anonymous_page(struct vm_area_struct...

...et CONFIG_LEGACY_VSYSCALL_XONLY=y # CONFIG_LEGACY_VSYSCALL_NONE is not set # CONFIG_CMDLINE_BOOL is not set CONFIG_MODIFY_LDT_SYSCALL=y CONFIG_HAVE_LIVEPATCH=y # end of Processor type and features CONFIG_ARCH_HAS_ADD_PAGES=y CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_ARCH_ENABLE_THP_MIGRATION=y # # Power management and ACPI options # # CONFIG_SUSPEND is not set CONFIG_PM=y CONFIG_PM_DEBUG=y CONFIG_PM_ADVANCED_DEBUG=y CONFIG_PM_CLK=y CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y CONFIG_ARCH_SUPPORTS_ACPI=y CONFIG_ACPI=y CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y CON...

...et CONFIG_LEGACY_VSYSCALL_XONLY=y # CONFIG_LEGACY_VSYSCALL_NONE is not set # CONFIG_CMDLINE_BOOL is not set CONFIG_MODIFY_LDT_SYSCALL=y CONFIG_HAVE_LIVEPATCH=y # end of Processor type and features CONFIG_ARCH_HAS_ADD_PAGES=y CONFIG_ARCH_ENABLE_MEMORY_HOTPLUG=y CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_ARCH_ENABLE_THP_MIGRATION=y # # Power management and ACPI options # # CONFIG_SUSPEND is not set CONFIG_PM=y CONFIG_PM_DEBUG=y CONFIG_PM_ADVANCED_DEBUG=y CONFIG_PM_CLK=y CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y CONFIG_ARCH_SUPPORTS_ACPI=y CONFIG_ACPI=y CONFIG_ACPI_LEGACY_TABLES_LOOKUP=y CONFIG_ARCH_MIGHT_HAVE_ACPI_PDC=y CON...

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. Earlier versions were posted previously [1] and [2]. The patches apply cleanly to the linux-mm 5.10.0-rc2 tree. There are a lot of other THP patches being posted. I don't think there are any semantic conflicts but there may be some merge conflicts depending on

This series adds support for transparent huge page migration to migrate_vma_*() and adds nouveau SVM and HMM selftests as consumers. An earlier version was posted previously [1]. This version now supports splitting a THP midway in the migration process which led to a number of changes. The patches apply cleanly to the current linux-mm tree. Since there are a couple of patches in linux-mm from Dan

...G_HAVE_GENERIC_GUP=y CONFIG_ARCH_DISCARD_MEMBLOCK=y CONFIG_MEMORY_ISOLATION=y # CONFIG_HAVE_BOOTMEM_INFO_NODE is not set # CONFIG_MEMORY_HOTPLUG is not set CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_COMPACTION=y CONFIG_MIGRATION=y CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y CONFIG_ARCH_ENABLE_THP_MIGRATION=y CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_VIRT_TO_BUS=y CONFIG_KSM=y CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y # CONFIG_MEMORY_FAILURE is not set CONFIG_TRANSPARENT_HUGEPAGE=y # CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is not set CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y CONFIG_A...

..._MEMBLOCK_NODE_MAP=y CONFIG_HAVE_GENERIC_GUP=y CONFIG_ARCH_DISCARD_MEMBLOCK=y # CONFIG_HAVE_BOOTMEM_INFO_NODE is not set # CONFIG_MEMORY_HOTPLUG is not set CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_COMPACTION=y CONFIG_MIGRATION=y CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y CONFIG_ARCH_ENABLE_THP_MIGRATION=y CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_BOUNCE=y CONFIG_VIRT_TO_BUS=y CONFIG_MMU_NOTIFIER=y CONFIG_KSM=y CONFIG_DEFAULT_MMAP_MIN_ADDR=4096 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y # CONFIG_MEMORY_FAILURE is not set CONFIG_TRANSPARENT_HUGEPAGE=y CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS=y # CONFIG_TRANSPAREN...

...FIG_MEMORY_HOTPLUG_SPARSE=y # CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set CONFIG_MEMORY_HOTREMOVE=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_MEMORY_BALLOON=y CONFIG_BALLOON_COMPACTION=y CONFIG_COMPACTION=y CONFIG_MIGRATION=y CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y CONFIG_ARCH_ENABLE_THP_MIGRATION=y CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_BOUNCE=y CONFIG_VIRT_TO_BUS=y CONFIG_MMU_NOTIFIER=y CONFIG_KSM=y CONFIG_DEFAULT_MMAP_MIN_ADDR=65536 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y CONFIG_MEMORY_FAILURE=y CONFIG_HWPOISON_INJECT=y CONFIG_TRANSPARENT_HUGEPAGE=y # CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is n...

...FIG_MEMORY_HOTPLUG_SPARSE=y # CONFIG_MEMORY_HOTPLUG_DEFAULT_ONLINE is not set CONFIG_MEMORY_HOTREMOVE=y CONFIG_SPLIT_PTLOCK_CPUS=4 CONFIG_ARCH_ENABLE_SPLIT_PMD_PTLOCK=y CONFIG_MEMORY_BALLOON=y CONFIG_BALLOON_COMPACTION=y CONFIG_COMPACTION=y CONFIG_MIGRATION=y CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION=y CONFIG_ARCH_ENABLE_THP_MIGRATION=y CONFIG_PHYS_ADDR_T_64BIT=y CONFIG_BOUNCE=y CONFIG_VIRT_TO_BUS=y CONFIG_MMU_NOTIFIER=y CONFIG_KSM=y CONFIG_DEFAULT_MMAP_MIN_ADDR=65536 CONFIG_ARCH_SUPPORTS_MEMORY_FAILURE=y CONFIG_MEMORY_FAILURE=y CONFIG_HWPOISON_INJECT=y CONFIG_TRANSPARENT_HUGEPAGE=y # CONFIG_TRANSPARENT_HUGEPAGE_ALWAYS is n...

This patch series aims to move the logical block size checking to the block code. This was inspired by missing check for valid logical block size in virtio-blk which causes the kernel to crash in a weird way later on when it is invalid. I added blk_is_valid_logical_block_size which returns true iff the block size is one of supported sizes. I added this check to virtio-blk, and also converted

This patch series aims to move the logical block size checking to the block code. This was inspired by missing check for valid logical block size in virtio-blk which causes the kernel to crash in a weird way later on when it is invalid. I added blk_is_valid_logical_block_size which returns true iff the block size is one of supported sizes. I added this check to virtio-blk, and also converted

Hi, here is the next version of changes to enable Linux to run as an SEV-ES guest. The code was rebased to v5.7-rc3 and got a fair number of changes since the last version. What is SEV-ES ============== SEV-ES is an acronym for 'Secure Encrypted Virtualization - Encrypted State' and means a hardware feature of AMD processors which hides the register state of VCPUs to the hypervisor by

Hi, here is the next version of changes to enable Linux to run as an SEV-ES guest. The code was rebased to v5.7-rc3 and got a fair number of changes since the last version. What is SEV-ES ============== SEV-ES is an acronym for 'Secure Encrypted Virtualization - Encrypted State' and means a hardware feature of AMD processors which hides the register state of VCPUs to the hypervisor by