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author | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 17:12:41 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-05-20 17:12:41 (GMT) |
commit | c04a5880299eab3da8c10547db96ea9cdffd44a6 (patch) | |
tree | 8708b60e410780ce8ea2074335033b016cab4c4f /arch/powerpc/mm/hugetlbpage.c | |
parent | a1c28b75a95808161cacbb3531c418abe248994e (diff) | |
parent | 138a076496e61c68ebc1dcccc088705826bbe26d (diff) | |
download | linux-c04a5880299eab3da8c10547db96ea9cdffd44a6.tar.xz |
Merge tag 'powerpc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc updates from Michael Ellerman:
"Highlights:
- Support for Power ISA 3.0 (Power9) Radix Tree MMU from Aneesh Kumar K.V
- Live patching support for ppc64le (also merged via livepatching.git)
Various cleanups & minor fixes from:
- Aaro Koskinen, Alexey Kardashevskiy, Andrew Donnellan, Aneesh Kumar K.V,
Chris Smart, Daniel Axtens, Frederic Barrat, Gavin Shan, Ian Munsie,
Lennart Sorensen, Madhavan Srinivasan, Mahesh Salgaonkar, Markus Elfring,
Michael Ellerman, Oliver O'Halloran, Paul Gortmaker, Paul Mackerras,
Rashmica Gupta, Russell Currey, Suraj Jitindar Singh, Thiago Jung
Bauermann, Valentin Rothberg, Vipin K Parashar.
General:
- Update LMB associativity index during DLPAR add/remove from Nathan
Fontenot
- Fix branching to OOL handlers in relocatable kernel from Hari Bathini
- Add support for userspace Power9 copy/paste from Chris Smart
- Always use STRICT_MM_TYPECHECKS from Michael Ellerman
- Add mask of possible MMU features from Michael Ellerman
PCI:
- Enable pass through of NVLink to guests from Alexey Kardashevskiy
- Cleanups in preparation for powernv PCI hotplug from Gavin Shan
- Don't report error in eeh_pe_reset_and_recover() from Gavin Shan
- Restore initial state in eeh_pe_reset_and_recover() from Gavin Shan
- Revert "powerpc/eeh: Fix crash in eeh_add_device_early() on Cell"
from Guilherme G Piccoli
- Remove the dependency on EEH struct in DDW mechanism from Guilherme
G Piccoli
selftests:
- Test cp_abort during context switch from Chris Smart
- Add several tests for transactional memory support from Rashmica
Gupta
perf:
- Add support for sampling interrupt register state from Anju T
- Add support for unwinding perf-stackdump from Chandan Kumar
cxl:
- Configure the PSL for two CAPI ports on POWER8NVL from Philippe
Bergheaud
- Allow initialization on timebase sync failures from Frederic Barrat
- Increase timeout for detection of AFU mmio hang from Frederic
Barrat
- Handle num_of_processes larger than can fit in the SPA from Ian
Munsie
- Ensure PSL interrupt is configured for contexts with no AFU IRQs
from Ian Munsie
- Add kernel API to allow a context to operate with relocate disabled
from Ian Munsie
- Check periodically the coherent platform function's state from
Christophe Lombard
Freescale:
- Updates from Scott: "Contains 86xx fixes, minor device tree fixes,
an erratum workaround, and a kconfig dependency fix."
* tag 'powerpc-4.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (192 commits)
powerpc/86xx: Fix PCI interrupt map definition
powerpc/86xx: Move pci1 definition to the include file
powerpc/fsl: Fix build of the dtb embedded kernel images
powerpc/fsl: Fix rcpm compatible string
powerpc/fsl: Remove FSL_SOC dependency from FSL_LBC
powerpc/fsl-pci: Add a workaround for PCI 5 errata
powerpc/fsl: Fix SPI compatible on t208xrdb and t1040rdb
powerpc/powernv/npu: Add PE to PHB's list
powerpc/powernv: Fix insufficient memory allocation
powerpc/iommu: Remove the dependency on EEH struct in DDW mechanism
Revert "powerpc/eeh: Fix crash in eeh_add_device_early() on Cell"
powerpc/eeh: Drop unnecessary label in eeh_pe_change_owner()
powerpc/eeh: Ignore handlers in eeh_pe_reset_and_recover()
powerpc/eeh: Restore initial state in eeh_pe_reset_and_recover()
powerpc/eeh: Don't report error in eeh_pe_reset_and_recover()
Revert "powerpc/powernv: Exclude root bus in pnv_pci_reset_secondary_bus()"
powerpc/powernv/npu: Enable NVLink pass through
powerpc/powernv/npu: Rework TCE Kill handling
powerpc/powernv/npu: Add set/unset window helpers
powerpc/powernv/ioda2: Export debug helper pe_level_printk()
...
Diffstat (limited to 'arch/powerpc/mm/hugetlbpage.c')
-rw-r--r-- | arch/powerpc/mm/hugetlbpage.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c index a4a90a8..5aac1a3 100644 --- a/arch/powerpc/mm/hugetlbpage.c +++ b/arch/powerpc/mm/hugetlbpage.c @@ -711,6 +711,9 @@ unsigned long hugetlb_get_unmapped_area(struct file *file, unsigned long addr, struct hstate *hstate = hstate_file(file); int mmu_psize = shift_to_mmu_psize(huge_page_shift(hstate)); + if (radix_enabled()) + return radix__hugetlb_get_unmapped_area(file, addr, len, + pgoff, flags); return slice_get_unmapped_area(addr, len, flags, mmu_psize, 1); } #endif @@ -719,14 +722,14 @@ unsigned long vma_mmu_pagesize(struct vm_area_struct *vma) { #ifdef CONFIG_PPC_MM_SLICES unsigned int psize = get_slice_psize(vma->vm_mm, vma->vm_start); - - return 1UL << mmu_psize_to_shift(psize); -#else + /* With radix we don't use slice, so derive it from vma*/ + if (!radix_enabled()) + return 1UL << mmu_psize_to_shift(psize); +#endif if (!is_vm_hugetlb_page(vma)) return PAGE_SIZE; return huge_page_size(hstate_vma(vma)); -#endif } static inline bool is_power_of_4(unsigned long x) @@ -825,7 +828,7 @@ static int __init hugetlbpage_init(void) { int psize; - if (!mmu_has_feature(MMU_FTR_16M_PAGE)) + if (!radix_enabled() && !mmu_has_feature(MMU_FTR_16M_PAGE)) return -ENODEV; for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) { @@ -865,6 +868,9 @@ static int __init hugetlbpage_init(void) HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_16M].shift; else if (mmu_psize_defs[MMU_PAGE_1M].shift) HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_1M].shift; + else if (mmu_psize_defs[MMU_PAGE_2M].shift) + HPAGE_SHIFT = mmu_psize_defs[MMU_PAGE_2M].shift; + return 0; } @@ -1005,9 +1011,9 @@ int gup_hugepte(pte_t *ptep, unsigned long sz, unsigned long addr, end = pte_end; pte = READ_ONCE(*ptep); - mask = _PAGE_PRESENT | _PAGE_USER; + mask = _PAGE_PRESENT | _PAGE_READ; if (write) - mask |= _PAGE_RW; + mask |= _PAGE_WRITE; if ((pte_val(pte) & mask) != mask) return 0; |