linux-kernel - [PATCH 3/5] powerpc/mm/32: Use page_is

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Message-Id: <20180222121516.23415-4-j.neuschaefer@gmx.net>
Date:   Thu, 22 Feb 2018 13:15:14 +0100
From:   Jonathan Neuschäfer <j.neuschaefer@....net>
To:     linuxppc-dev@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org,
        Michael Ellerman <mpe@...erman.id.au>, linux-mm@...ck.org,
        Joel Stanley <joel@....id.au>,
        Christophe LEROY <christophe.leroy@....fr>,
        Jonathan Neuschäfer <j.neuschaefer@....net>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Balbir Singh <bsingharora@...il.com>,
        Guenter Roeck <linux@...ck-us.net>
Subject: [PATCH 3/5] powerpc/mm/32: Use page_is_ram to check for RAM

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@....net>
---
 arch/powerpc/mm/pgtable_32.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/arch/powerpc/mm/pgtable_32.c b/arch/powerpc/mm/pgtable_32.c
index d35d9ad3c1cd..d54e1a9c1c99 100644
--- a/arch/powerpc/mm/pgtable_32.c
+++ b/arch/powerpc/mm/pgtable_32.c
@@ -145,9 +145,8 @@ __ioremap_caller(phys_addr_t addr, unsigned long size, unsigned long flags,
 #ifndef CONFIG_CRASH_DUMP
 	/*
 	 * Don't allow anybody to remap normal RAM that we're using.
-	 * mem_init() sets high_memory so only do the check after that.
 	 */
-	if (slab_is_available() && (p < virt_to_phys(high_memory)) &&
+	if (page_is_ram(__phys_to_pfn(p)) &&
 	    !(__allow_ioremap_reserved && memblock_is_region_reserved(p, size))) {
 		printk("__ioremap(): phys addr 0x%llx is RAM lr %ps\n",
 		       (unsigned long long)p, __builtin_return_address(0));
-- 
2.16.1