powerpc32: fix of PTE accessors and handle inverted HW bits via PTE accessors
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- v1 Latest4 patches 1 replyIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/4 | powerpc32: misuse of accessors to pte_t objectsarch/ | +9 | 0 replies | |
| 2/4 | powerpc32: properly clear page table when 0 is not a good default PTE valuearch/ | +14 | 1 reply | |
| 3/4 | powerpc32: adds direct support to hardware inverted values in pte accessorsarch/ arch/ arch/ | +32 | 0 replies | |
| 4/4 | powerpc32/8xx: invert _PAGE_RW bit in PTE accessorsarch/ arch/ | +1 | 0 replies |
Reviews trailers per patch
None of the 4 patches has a Reviewed-by or Acked-by.
| Patch | Christophe Leroy |
|---|---|
| Series | T-b |
| 1/4 | |
| 2/4 | |
| 3/4 | |
| 4/4 |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/4] powerpc32: fix of PTE accessors and handle inverted HW bits via PTE accessors
Some powerpc like the 8xx do invert some PTE bits in HW. In order to avoid having to invert the bits each time we set them into hardware, this patch adds the invertion logic into the PTE accessors in order to get them already properly inversed in the tables.
Patchset:
1) powerpc32: misuse of accessors to pte_t objects
2) powerpc32: properly clear page table when 0 is not a good default PTE value
3) powerpc32: adds direct support to hardware inverted values in pte accessors
4) powerpc32/8xx: invert _PAGE_RW bit in PTE accessors
All changes have been successfully tested on MPC885
Signed-off-by Christophe Leroy <[email protected]>
Tested-by Christophe Leroy <[email protected]>
--- arch/powerpc/include/asm/page.h | 8 +++---- arch/powerpc/include/asm/pgtable-ppc32.h | 37 +++++++++++++++++++++----------- arch/powerpc/include/asm/pgtable.h | 17 ++++++++------- arch/powerpc/include/asm/pte-8xx.h | 1 + arch/powerpc/include/asm/pte-common.h | 3 +++ arch/powerpc/kernel/head_8xx.S | 3 --- arch/powerpc/mm/pgtable_32.c | 14 ++++++++++++ 7 files changed, 56 insertions(+), 27 deletions(-)