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linux-next/arch/powerpc
Nicholas Piggin 4d7cd3b956 powerpc/64s: Avoid r3 save/restore in SLB miss handler
The SLB miss handler uses r3 for the faulting address but r12 is
mostly able to be freed up to save r3 in. It just requires SRR1
be reloaded again on error.

It would be more conventional to use r12 for SRR1 (and use r11 to
save r3), but slb_allocate_realmode clobbers r11 and not r12.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-06-20 22:21:59 +10:00
..
boot powerpc/64: Do not link crtsaveres.o in boot 2017-05-30 14:59:51 +10:00
configs powerpc/44x/fsp2: Add defconfig for FSP2 board 2017-05-30 14:59:51 +10:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2017-05-02 15:53:46 -07:00
include powerpc/64s/idle: Branch to handler with virtual mode offset 2017-06-19 19:46:28 +10:00
kernel powerpc/64s: Avoid r3 save/restore in SLB miss handler 2017-06-20 22:21:59 +10:00
kvm powerpc/64s/idle: Avoid SRR usage in idle sleep/wake paths 2017-06-19 19:46:29 +10:00
lib powerpc/lib/xor_vmx: Ensure no altivec code executes before enable_kernel_altivec() 2017-06-02 20:17:52 +10:00
math-emu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
mm powerpc/64s: Preserve r3 in slb_allocate_realmode() 2017-06-20 22:18:25 +10:00
net powerpc updates for 4.11 part 1. 2017-02-22 10:30:38 -08:00
oprofile ktime: Cleanup ktime_set() usage 2016-12-25 17:21:22 +01:00
perf powerpc/perf: Add Power8 mem_access event to sysfs 2017-04-19 20:00:23 +10:00
platforms powerpc/64s/idle: Run latch switch is done with MSR[EE]=0 2017-06-19 19:46:30 +10:00
purgatory kexec, x86/purgatory: Unbreak it and clean it up 2017-03-10 20:55:09 +01:00
sysdev powerpc: Fix some spelling mistakes 2017-06-05 16:50:15 +10:00
tools powerpc/64: Tool to check head sections location sanity 2017-05-30 14:59:51 +10:00
xmon powerpc/xmon: Fix compile error with PPC_8xx=y 2017-05-30 14:59:51 +10:00
Kconfig powerpc: Remove __ilog2()s and use generic ones 2017-06-02 19:23:56 +10:00
Kconfig.debug powerpc/xmon: Enable disassembly files (compilation changes) 2017-02-15 20:02:42 +11:00
Makefile powerpc: Link warning for orphan sections 2017-05-30 14:59:51 +10:00
Makefile.postlink powerpc/64: Tool to check head sections location sanity 2017-05-30 14:59:51 +10:00