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powerpc/64/asm: Inline BRANCH_TO_C000

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It is used just once and does not really help with readability, remove it.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211221055904.555763-4-aik@ozlabs.ru
This commit is contained in:
Alexey Kardashevskiy 2021-12-21 16:59:01 +11:00 committed by Michael Ellerman
parent f5140cab44
commit fd98395797
1 changed files with 3 additions and 14 deletions
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17
arch/powerpc/kernel/exceptions-64s.S
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@ -89,19 +89,6 @@ name:
ori reg,reg,(ABS_ADDR(label))@l; \
addis reg,reg,(ABS_ADDR(label))@h
/*
* Branch to label using its 0xC000 address. This results in instruction
* address suitable for MSR[IR]=0 or 1, which allows relocation to be turned
* on using mtmsr rather than rfid.
*
* This could set the 0xc bits for !RELOCATABLE as an immediate, rather than
* load KBASE for a slight optimisation.
*/
#define BRANCH_TO_C000(reg, label) \
__LOAD_FAR_HANDLER(reg, label); \
mtctr reg; \
bctr
/*
* Interrupt code generation macros
*/
@ -974,7 +961,9 @@ TRAMP_REAL_BEGIN(system_reset_idle_wake)
/* We are waking up from idle, so may clobber any volatile register */
cmpwi cr1,r5,2
bltlr cr1 /* no state loss, return to idle caller with r3=SRR1 */
BRANCH_TO_C000(r12, DOTSYM(idle_return_gpr_loss))
__LOAD_FAR_HANDLER(r12, DOTSYM(idle_return_gpr_loss))
mtctr r12
bctr
#endif
#ifdef CONFIG_PPC_PSERIES