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Commit dbeea1d6 authored by Nicholas Piggin's avatar Nicholas Piggin Committed by Michael Ellerman
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powerpc/64s/paca: EX_LR can be merged with EX_DAR 



EX_LR is used only for a small section of the SLB miss handler.
Merge it with EX_DAR.

Signed-off-by: default avatarNicholas Piggin <npiggin@gmail.com>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
parent 36670fcf

arch/powerpc/include/asm/exception-64s.h

+12 −5
Original line number Diff line number Diff line
@@ -46,12 +46,19 @@ 
#define EX_DSISR	48

#define EX_CCR		52

#define EX_R3		56

#define EX_LR		64

#define EX_CFAR		72

#define EX_PPR		80	/* SMT thread status register (priority) */

#define EX_CTR		88

#define EX_CFAR		64

#define EX_PPR		72

#define EX_CTR		80



#define EX_SIZE		12	/* size in u64 units */

#define EX_SIZE		11	/* size in u64 units */



/*

 * EX_LR is only used in EXSLB and where it does not overlap with EX_DAR

 * EX_CCR similarly with DSISR, but being 4 byte registers there is a hole

 * in the save area so it's not necessary to overlap them. Could be used

 * for future savings though if another 4 byte register was to be saved.

 */

#define EX_LR		EX_DAR



#ifdef CONFIG_RELOCATABLE

#define __EXCEPTION_RELON_PROLOG_PSERIES_1(label, h)			\