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powerpc: Remove CONFIG_POWER4_ONLY

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Remove CONFIG_POWER4_ONLY, the option is badly named and only does two
things:

- It wraps the MMU segment table code. With feature fixups there is
  little downside to compiling this in.

- It uses the newer mtocrf instruction in various assembly functions.
  Instead of making this a compile option just do it at runtime via
  a feature fixup.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Anton Blanchard
2012-04-18 02:21:52 +00:00
committed by Benjamin Herrenschmidt
parent 6cd3209967
commit 694caf0255
10 changed files with 19 additions and 36 deletions
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4
arch/powerpc/kernel/exceptions-64s.S
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@@ -94,12 +94,10 @@ machine_check_pSeries_1:
data_access_pSeries:
HMT_MEDIUM
SET_SCRATCH0(r13)
#ifndef CONFIG_POWER4_ONLY
BEGIN_FTR_SECTION
b data_access_check_stab
data_access_not_stab:
END_MMU_FTR_SECTION_IFCLR(MMU_FTR_SLB)
#endif
EXCEPTION_PROLOG_PSERIES(PACA_EXGEN, data_access_common, EXC_STD,
KVMTEST, 0x300)
@@ -301,7 +299,6 @@ machine_check_fwnmi:
EXC_STD, KVMTEST, 0x200)
KVM_HANDLER_SKIP(PACA_EXMC, EXC_STD, 0x200)
#ifndef CONFIG_POWER4_ONLY
/* moved from 0x300 */
data_access_check_stab:
GET_PACA(r13)
@@ -328,7 +325,6 @@ do_stab_bolted_pSeries:
GET_SCRATCH0(r10)
std r10,PACA_EXSLB+EX_R13(r13)
EXCEPTION_PROLOG_PSERIES_1(.do_stab_bolted, EXC_STD)
#endif /* CONFIG_POWER4_ONLY */
KVM_HANDLER_SKIP(PACA_EXGEN, EXC_STD, 0x300)
KVM_HANDLER_SKIP(PACA_EXSLB, EXC_STD, 0x380)