From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH 0/9] Reduce PACA save areas
Date: Sun, 21 May 2017 23:15:41 +1000 [thread overview]
Message-ID: <20170521131550.25813-1-npiggin@gmail.com> (raw)
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(-)
--
2.11.0
next reply other threads:[~2017-05-21 13:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-05-21 13:15 Nicholas Piggin [this message]
2017-05-21 13:15 ` [PATCH 1/9] powerpc/64s: slb_allocate_realmode() preserve r3 Nicholas Piggin
2017-06-22 13:12 ` [1/9] " Michael Ellerman
2017-05-21 13:15 ` [PATCH 2/9] powerpc/64s: SLB miss handler avoid saving faulting address into EX_DAR Nicholas Piggin
2017-05-21 13:15 ` [PATCH 3/9] powerpc/64s: SLB miss already has CTR saved for relocatable kernel Nicholas Piggin
2017-06-19 11:45 ` Michael Ellerman
2017-06-19 17:20 ` Nicholas Piggin
2017-05-21 13:15 ` [PATCH 4/9] powerpc/64s: SLB miss handler avoid r3 save/restore Nicholas Piggin
2017-06-19 4:48 ` Michael Ellerman
2017-06-19 16:54 ` Nicholas Piggin
2017-05-21 13:15 ` [PATCH 5/9] powerpc/64s: paca add EX_SIZE definition for exception save areas Nicholas Piggin
2017-05-21 13:15 ` [PATCH 6/9] powerpc/64s: paca EX_SRR0 is unused, remove it Nicholas Piggin
2017-05-21 13:15 ` [PATCH 7/9] powerpc/64s: paca EX_LR can be merged with EX_DAR Nicholas Piggin
2017-05-21 13:15 ` [PATCH 8/9] powerpc/64s: paca EX_R3 " Nicholas Piggin
2017-05-21 13:15 ` [PATCH 9/9] powerpc/64s: paca EX_CTR is not used with !RELOCATABLE, remove it Nicholas Piggin
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