On Thu, Dec 04, 2014 at 09:22:20AM +0800, Hou Pengyang wrote:
> On 2014/12/2 21:44, Luis Henriques wrote:
> >On Wed, Nov 26, 2014 at 03:49:59PM +0800, Hou Pengyang wrote:
> >>On 2014/11/11 19:31, Hou Pengyang wrote:
> >>>Hi Greg,
> >>>
> >>>These patches are backported to make LPAE more robust, most of which
> >>>are important bugfixs. So I suggest merging them into 3.10.
> >>>
> >>>For ARM, when LPAE is triggered, 40-bit physical address is available,
> >>>translation table becomes 3-level, and every table entry is 64 bit
> >>>instead of 32. However, 3.10 does not well adapt to the change, So
> >>>comes this series of patches.
> >>>
> >>>There are 12 patches, 9 of which can be cherry-picked cleanly, the
> >>>rest needs to be adjusted. Patch information as follows:
> >>>
> >>>PART 1: patches that can be cleanly applied:
> >>>
> >>>dde1b65 ARM: mm: correct pte_same behaviour for LPAE.
> >>>926edcc ARM: LPAE: use signed arithmetic for mask definitions
> >>>20d6956 ARM: LPAE: use phys_addr_t in alloc_init_pud()
> >>>5b20c5b ARM: fix type of PHYS_PFN_OFFSET to unsigned long
> >>>e38a517 ARM: lpae: fix definition of PTE_HWTABLE_PTRS
> >>>237f123 ARM: 7866/1: include: asm: use 'long long' instead of
> >>> 'u64' within atomic.h
> >>>4dcc1cf ARM: 7867/1: include: asm: use 'int' instead of
> >>> 'unsigned long' for 'oldval' in atomic_cmpxchg().
> >>>efea340 ARM: 7931/1: Correct virt_addr_valid
> >>>6b07699 ARM: DMA: ensure that old section mappings are flushed
> >>> from the TLB
> >>>
> >>>PART 2: patches that should be adjusted:
> >>>
> >>>b713aa0 ARM: fix asm/memory.h build error
> >>>f295070 ARM: 8108/1: mm: Introduce {pte,pmd}_isset and
> >>> {pte,pmd}_isclear
> >>>ded9477 ARM: 8109/1: mm: Modify pte_write and pmd_write
> >>> logic for LPAE
> >>>
> >
> >The last 2 commits are the only ones not present in the 3.16 kernel.
> >If you think they are relevant for this kernel version, I can queue
> >them for the next release.
> >
> >Cheers,
> >--
> >Luís
> >
> >>>Thanks!
> >>>
> >>>
> >>> arch/arm/include/asm/atomic.h | 52 +++++++++++++++--------------
> >>> arch/arm/include/asm/memory.h | 36 ++++++++++----------
> >>> arch/arm/include/asm/page.h | 2 +-
> >>> arch/arm/include/asm/pgtable-3level-hwdef.h | 1 +
> >>> arch/arm/include/asm/pgtable-3level.h | 31 +++++++++++++----
> >>> arch/arm/include/asm/pgtable.h | 14 +++++---
> >>> arch/arm/kernel/head.S | 2 +-
> >>> arch/arm/mm/dma-mapping.c | 11 +++++-
> >>> arch/arm/mm/mmu.c | 3 +-
> >>> arch/arm/mm/proc-v7-3level.S | 9 +++--
> >>> 10 files changed, 100 insertions(+), 61 deletions(-)
> >>>
> >>hi, Greg, these patches are important fixes to LPAE, I posted them half a
> >>month ago, but haven't received your reply. Would you please have a review
> >>of them to make sure if it make sense to merge them into 3.10 stable?
> >>Looking forward to you apply.
> >>
> >>--
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> >
> >.
> >
> hi Luís, Bugs which the two patches tend to fix also exist in 3.16 tree, so
> it's necessary to merge them into stable tree and both can be cherry-picked
> into 3.16.7 cleanly.
>
> Thanks!
>
Great, I'll queue them for the next 3.16 release. Thanks!
Cheers,
--
Luís
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