Free up a couple of MAIRs
Status from this message: Applied to arm64 (for-next/mm), thanks!
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b4 am [email protected]Versions newest first · linked by author and title
- v2 Latest3 patches 1 replyApplied
- v13 patches 9 repliesSuperseded
Patches in v2 Applied
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/3 | arm64: mm: Remove unused support for Device-GRE memory typearch/ arch/ arch/ +1 more | +0 | 0 replies | |
| 2/3 | arm64: acpi: Map EFI_MEMORY_WT memory as Normal-NCarch/ | +17 | 0 replies | |
| 3/3 | arm64: mm: Remove unused support for Normal-WT memory typearch/ arch/ arch/ +1 more | +2 | 0 replies |
Reviews trailers per patch
All 3 patches have a Reviewed-by or Acked-by.
| Patch | Catalin Marinas | Ard Biesheuvel |
|---|---|---|
| 1/3 | A-b | |
| 2/3 | A-b | A-b |
| 3/3 | A-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH v2 0/3] Free up a couple of MAIRs
Hi folks,
This is version two of the patches I previously posted here:
v1: https://lore.kernel.org/r/[email protected]
Changes since v1 include:
* Only consider EFI_MEMORY_WT as a last resort
* Emit warning when using Normal-NC for EFI_MEMORY_WT
* Added acks
* Rebased onto -rc3
Catalin pointed out that the Device-GRE memory type is unused, despite having a MAIR allocation. In removing that, I noticed that we also allocate Normal-WT despite it only being used for EFI_MEMORY_WT mappings, which is unheard of in isolation.
With these changes, we free up a couple of MAIR entries for more interesting things (e.g. outer cacheability attributes if we need them in future for the SLC).
Cheers,
Will
--->8
Will Deacon (3):
arm64: mm: Remove unused support for Device-GRE memory type
arm64: acpi: Map EFI_MEMORY_WT memory as Normal-NC
arm64: mm: Remove unused support for Normal-WT memory type
arch/arm64/include/asm/memory.h | 6 ++---- arch/arm64/include/asm/pgtable-prot.h | 1 - arch/arm64/include/asm/sysreg.h | 2 -- arch/arm64/kernel/acpi.c | 22 +++++++++++++++++----- arch/arm64/mm/proc.S | 2 -- arch/arm64/mm/ptdump.c | 4 ---- 6 files changed, 19 insertions(+), 18 deletions(-)
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