From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Mahesh Salgaonkar <mahesh@linux.vnet.ibm.com>,
Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH 05/14] powerpc/64s/exception: machine check pseries should always run the early handler
Date: Wed, 3 Jul 2019 17:54:35 +1000 [thread overview]
Message-ID: <20190703075444.19005-6-npiggin@gmail.com> (raw)
In-Reply-To: <20190703075444.19005-1-npiggin@gmail.com>
Now that pseries with fwnmi registered runs the early machine check
handler, there is no good reason to special case the non-fwnmi case
and skip the early handler. Reducing the code and number of paths is
a top priority for asm code, it's better to handle this in C where
possible (and the pseries early handler is a no-op if fwnmi is not
registered).
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/kernel/exceptions-64s.S | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/powerpc/kernel/exceptions-64s.S b/arch/powerpc/kernel/exceptions-64s.S
index 0186a44bb981..a69ceb28cf4c 100644
--- a/arch/powerpc/kernel/exceptions-64s.S
+++ b/arch/powerpc/kernel/exceptions-64s.S
@@ -934,11 +934,7 @@ EXC_COMMON_BEGIN(system_reset_common)
EXC_REAL_BEGIN(machine_check, 0x200, 0x100)
EXCEPTION_PROLOG_0 PACA_EXMC
-BEGIN_FTR_SECTION
b machine_check_common_early
-FTR_SECTION_ELSE
- b machine_check_pSeries_0
-ALT_FTR_SECTION_END_IFSET(CPU_FTR_HVMODE)
EXC_REAL_END(machine_check, 0x200, 0x100)
EXC_VIRT_NONE(0x4200, 0x100)
TRAMP_REAL_BEGIN(machine_check_common_early)
--
2.20.1
next prev parent reply other threads:[~2019-07-03 8:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-03 7:54 [PATCH 00/14] powerpc/64s/exception: machine check cleanup series Nicholas Piggin
2019-07-03 7:54 ` [PATCH 01/14] powerpc/64s/exception: machine check fwnmi remove HV case Nicholas Piggin
2019-07-03 7:54 ` [PATCH 02/14] powerpc/64s/exception: machine check remove bitrotted comment Nicholas Piggin
2019-07-03 7:54 ` [PATCH 03/14] powerpc/64s/exception: machine check fix KVM guest test Nicholas Piggin
2019-07-03 7:54 ` [PATCH 04/14] powerpc/64s/exception: machine check adjust RFI target Nicholas Piggin
2019-07-03 7:54 ` Nicholas Piggin [this message]
2019-07-03 7:54 ` [PATCH 06/14] powerpc/64s/exception: machine check remove machine_check_pSeries_0 branch Nicholas Piggin
2019-07-03 7:54 ` [PATCH 07/14] powerpc/64s/exception: machine check use correct cfar for late handler Nicholas Piggin
2019-07-03 7:54 ` [PATCH 08/14] powerpc/64s/exception: machine check pseries should skip the late handler for host kernel MCEs Nicholas Piggin
2019-07-03 7:54 ` [PATCH 09/14] powerpc/64s/exception: machine check restructure to reuse common macros Nicholas Piggin
2019-07-03 7:54 ` [PATCH 10/14] powerpc/64s/exception: machine check move tramp code Nicholas Piggin
2019-07-03 7:54 ` [PATCH 11/14] powerpc/64s/exception: simplify machine check early path Nicholas Piggin
2019-07-03 7:54 ` [PATCH 12/14] powerpc/64s/exception: machine check move unrecoverable handling out of line Nicholas Piggin
2019-07-03 7:54 ` [PATCH 13/14] powerpc/64s/exception: untangle early machine check handler branch Nicholas Piggin
2019-07-03 7:54 ` [PATCH 14/14] powerpc/64s/exception: machine check improve labels and comments Nicholas Piggin
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