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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