Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
In-Reply-To: <20210518120633.GW12395@shell.armlinux.org.uk>
References: <20210518120633.GW12395@shell.armlinux.org.uk>
From:   "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>
To:     Yanfei Xu <yanfei.xu@windriver.com>
Cc:     rppt@kernel.org, ardb@kernel.org, linus.walleij@linaro.org,
        akpm@linux-foundation.org, carver4lio@163.com,
        tiantao6@hisilicon.com, linux-arm-kernel@lists.infradead.org,
        linux-kernel@vger.kernel.org
Subject: [PATCH v2 4/6] ARM: change vmalloc_start to vmalloc_size
MIME-Version: 1.0
Content-Disposition: inline
Content-Transfer-Encoding: 8bit
Content-Type: text/plain; charset="utf-8"
Message-Id: <E1lmZT1-0005Te-4i@rmk-PC.armlinux.org.uk>
Sender: Russell King <rmk@armlinux.org.uk>
Date:   Fri, 28 May 2021 11:11:47 +0100
Precedence: bulk

Rather than storing the start of vmalloc space, store the size, and
move the calculation into adjust_lowmem_limit(). We now have one single
place where this calculation takes place.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
 arch/arm/mm/mmu.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c
index ed2846bdb1f4..5ae11e6f2a58 100644
--- a/arch/arm/mm/mmu.c
+++ b/arch/arm/mm/mmu.c
@@ -1123,7 +1123,7 @@ void __init debug_ll_io_init(void)
 }
 #endif
 
-static unsigned long __initdata vmalloc_start = VMALLOC_END - (240 << 20);
+static unsigned long __initdata vmalloc_size = 240 << 20;
 
 /*
  * vmalloc=size forces the vmalloc area to be exactly 'size'
@@ -1148,7 +1148,7 @@ static int __init early_vmalloc(char *arg)
 			vmalloc_reserve >> 20);
 	}
 
-	vmalloc_start = VMALLOC_END - vmalloc_reserve;
+	vmalloc_size = vmalloc_reserve;
 	return 0;
 }
 early_param("vmalloc", early_vmalloc);
@@ -1168,7 +1168,7 @@ void __init adjust_lowmem_bounds(void)
 	 * and may itself be outside the valid range for which phys_addr_t
 	 * and therefore __pa() is defined.
 	 */
-	vmalloc_limit = (u64)vmalloc_start - VMALLOC_OFFSET -
+	vmalloc_limit = (u64)VMALLOC_END - vmalloc_size - VMALLOC_OFFSET -
 			PAGE_OFFSET + PHYS_OFFSET;
 
 	/*
-- 
2.20.1