[15/20] ARC: entry: EV_MachineCheck dont re-read ECR

Message ID	20230815004813.555115-16-vgupta@kernel.org
State	New
Headers	show Return-Path: <linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org> From: Vineet Gupta <vgupta@kernel.org> To: linux-snps-arc@lists.infradead.org Cc: linux-kernel@vger.kernel.org, Shahab Vahedi <Shahab.Vahedi@synopsys.com>, Alexey Brodkin <abrodkin@synopsys.com>, Vineet Gupta <vgupta@kernel.org> Subject: [PATCH 15/20] ARC: entry: EV_MachineCheck dont re-read ECR Date: Mon, 14 Aug 2023 17:48:08 -0700 Message-Id: <20230815004813.555115-16-vgupta@kernel.org> In-Reply-To: <20230815004813.555115-1-vgupta@kernel.org> References: <20230815004813.555115-1-vgupta@kernel.org> MIME-Version: 1.0 preview: Signed-off-by: Vineet Gupta <vgupta@kernel.org> --- arch/arc/kernel/entry.S \| 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index f291fc8476d7..46582fbebcf2 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -95,16 +95,15 @@ END(instr_service [...] Content analysis details: (-2.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at https://www.dnswl.org/, medium trust [2604:1380:4641:c500:0:0:0:1 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.2 DKIMWL_WL_HIGH DKIMwl.org - High trust sender Precedence: list Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" <linux-snps-arc-bounces@lists.infradead.org> Errors-To: linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org
Series	ARC updates \| expand [00/20] ARC updates [01/20] ARC: uaccess: remove arc specific out-of-line handles for -Os [02/20] ARC: uaccess: use optimized generic __strnlen_user/__strncpy_from_user [03/20] ARC: uaccess: elide unaliged handling if hardware supports [04/20] ARCv2: memset: don't prefetch for len == 0 which happens a alot [05/20] ARC: boot log: eliminate struct cpuinfo_arc #1: mm [06/20] ARC: boot log: eliminate struct cpuinfo_arc #2: cache [07/20] ARC: boot log: eliminate struct cpuinfo_arc #3: don't export [08/20] ARC: boot log: eliminate struct cpuinfo_arc #4: boot log per ISA [09/20] ARC: entry: use gp to cache task pointer (vs. r25) [10/20] ARC: kernel stack: INIT_THREAD need not setup @init_stack in @ksp [11/20] ARC: __switch_to: asm with dwarf ops (vs. inline asm) [12/20] ARC: __switch_to: move ksp to thread_info from thread_struct [13/20] ARC: entry: rework (non-functional) [14/20] ARC: entry: ARcompact EV_ProtV to use r10 directly [15/20] ARC: entry: EV_MachineCheck dont re-read ECR [16/20] ARC: entry: Add more common chores to EXCEPTION_PROLOGUE [17/20] ARC: entry: replace 8 byte OR with 4 byte BSET [18/20] ARC: entry: replace 8 byte ADD.ne with 4 byte ADD2.ne [19/20] ARCv2: entry: rearrange pt_regs slightly [20/20] ARC: pt_regs: create seperate type for ecr

Message ID

20230815004813.555115-16-vgupta@kernel.org

State

New

Headers

From: Vineet Gupta <vgupta@kernel.org>
To: linux-snps-arc@lists.infradead.org
Cc: linux-kernel@vger.kernel.org,
	Shahab Vahedi <Shahab.Vahedi@synopsys.com>,
	Alexey Brodkin <abrodkin@synopsys.com>,
	Vineet Gupta <vgupta@kernel.org>
Subject: [PATCH 15/20] ARC: entry: EV_MachineCheck dont re-read ECR
Date: Mon, 14 Aug 2023 17:48:08 -0700
Message-Id: <20230815004813.555115-16-vgupta@kernel.org>
In-Reply-To: <20230815004813.555115-1-vgupta@kernel.org>
References: <20230815004813.555115-1-vgupta@kernel.org>
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Precedence: list
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 linux-snps-arc-bounces+incoming=patchwork.ozlabs.org@lists.infradead.org

Series

ARC updates | expand

Commit Message

Vineet Gupta Aug. 15, 2023, 12:48 a.m. UTC

Signed-off-by: Vineet Gupta <vgupta@kernel.org>
---
 arch/arc/kernel/entry.S | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S
index f291fc8476d7..46582fbebcf2 100644
--- a/arch/arc/kernel/entry.S
+++ b/arch/arc/kernel/entry.S
@@ -95,16 +95,15 @@  END(instr_service)
 
 ENTRY(EV_MachineCheck)
 
-	EXCEPTION_PROLOGUE
+	EXCEPTION_PROLOGUE	; ECR returned in r10
 
-	lr  r2, [ecr]
 	lr  r0, [efa]
 	mov r1, sp
 
 	; MC excpetions disable MMU
 	ARC_MMU_REENABLE r3
 
-	lsr  	r3, r2, 8
+	lsr  	r3, r10, 8
 	bmsk 	r3, r3, 7
 	brne    r3, ECR_C_MCHK_DUP_TLB, 1f

[15/20] ARC: entry: EV_MachineCheck dont re-read ECR

Commit Message

Patch