Reduce PACA save areas
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b4 am [email protected]Versions newest first
- v1 Latest9 patches 5 repliesIn review
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/9 | powerpc/64s: slb_allocate_realmode() preserve r3arch/ | +14 | 1 reply | |
| 2/9 | powerpc/64s: SLB miss handler avoid saving faulting address into EX_DARarch/ | +8 | 0 replies | |
| 3/9 | powerpc/64s: SLB miss already has CTR saved for relocatable kernelarch/ | +5 | 2 replies | |
| 4/9 | powerpc/64s: SLB miss handler avoid r3 save/restorearch/ | +18 | 2 replies | |
| 5/9 | powerpc/64s: paca add EX_SIZE definition for exception save areasarch/ arch/ | +27 | 0 replies | |
| 6/9 | powerpc/64s: paca EX_SRR0 is unused, remove itarch/ | +10 | 0 replies | |
| 7/9 | powerpc/64s: paca EX_LR can be merged with EX_DARarch/ | +12 | 0 replies | |
| 8/9 | powerpc/64s: paca EX_R3 can be merged with EX_DARarch/ | +11 | 0 replies | |
| 9/9 | powerpc/64s: paca EX_CTR is not used with !RELOCATABLE, remove itarch/ | +4 | 0 replies |
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Cover letter [PATCH 0/9] Reduce PACA save areas
I want to save another register in the PACA, so I had a look at what we might cut from it first. 3-4 fields are reasonably easy to remove.
Nicholas Piggin (9):
powerpc/64s: slb_allocate_realmode() preserve r3 powerpc/64s: SLB miss handler avoid saving faulting address into
EX_DAR
powerpc/64s: SLB miss already has CTR saved for relocatable kernel powerpc/64s: SLB miss handler avoid r3 save/restore powerpc/64s: paca add EX_SIZE definition for exception save areas powerpc/64s: paca EX_SRR0 is unused, remove it powerpc/64s: paca EX_LR can be merged with EX_DAR powerpc/64s: paca EX_R3 can be merged with EX_DAR powerpc/64s: paca EX_CTR is not used with !RELOCATABLE, remove it
arch/powerpc/include/asm/exception-64s.h | 53 ++++++++++++++++++++++--------- arch/powerpc/include/asm/paca.h | 12 ++++--- arch/powerpc/kernel/exceptions-64s.S | 54 +++++++++++++++++--------------- arch/powerpc/mm/slb_low.S | 24 ++++++++------ 4 files changed, 88 insertions(+), 55 deletions(-)
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2.11.0