linux-kernel - [PATCH -next 2/3] arm-soc: mvebu: replace open coded VA->PA conversion

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Date:   Sat, 18 Dec 2021 16:58:42 +0800
From:   Gaosheng Cui <cuigaosheng1@...wei.com>
To:     <linux@...linux.org.uk>, <krzysztof.kozlowski@...onical.com>,
        <andrew@...n.ch>, <gregory.clement@...tlin.com>,
        <sebastian.hesselbarth@...il.com>, <vireshk@...nel.org>,
        <shiraz.linux.kernel@...il.com>, <soc@...nel.org>,
        <linus.walleij@...aro.org>, <ardb@...nel.org>,
        <cuigaosheng1@...wei.com>
CC:     <linux-arm-kernel@...ts.infradead.org>,
        <linux-samsung-soc@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <gongruiqi1@...wei.com>,
        <wangweiyang2@...wei.com>
Subject: [PATCH -next 2/3] arm-soc: mvebu: replace open coded VA->PA conversion

From: Ard Biesheuvel <ard.biesheuvel@...aro.org>

This replaces an open coded calculation to obtain the physical
address of a far symbol with a call to the new ldr_l etc macro.

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@...aro.org>
Signed-off-by: Gaosheng Cui <cuigaosheng1@...wei.com>
---
 arch/arm/mach-mvebu/coherency_ll.S | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/arch/arm/mach-mvebu/coherency_ll.S b/arch/arm/mach-mvebu/coherency_ll.S
index a3a64bf97250..9ae65b1e9745 100644
--- a/arch/arm/mach-mvebu/coherency_ll.S
+++ b/arch/arm/mach-mvebu/coherency_ll.S
@@ -37,9 +37,7 @@ ENTRY(ll_get_coherency_base)
 	 * MMU is disabled, use the physical address of the coherency
 	 * base address, (or 0x0 if the coherency fabric is not mapped)
 	 */
-	adr	r1, 3f
-	ldr	r3, [r1]
-	ldr	r1, [r1, r3]
+	ldr_l	r1, coherency_phys_base
 	b	2f
 1:
 	/*
@@ -155,7 +153,3 @@ ENTRY(ll_disable_coherency)
 	dsb
 	ret	lr
 ENDPROC(ll_disable_coherency)
-
-	.align 2
-3:
-	.long	coherency_phys_base - .
-- 
2.30.0