From mboxrd@z Thu Jan 1 00:00:00 1970 From: opendmb@gmail.com (Doug Berger) Date: Mon, 26 Jun 2017 17:57:29 -0700 Subject: [PATCH] ARM: small correction to early_ioremap support Message-ID: <20170627005731.7869-1-opendmb@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org The fixmap pages need to be on the same pmd page for the current implementation of arm early_fixmap. A build time bug check is used to ensure that. However, the worst case fixmap range is better represented by __end_of_fixed_addresses than by the value __end_of_early_ioremap_region. Fixes: 2937367b8a4b ("ARM: add support for generic early_ioremap/early_memremap") Signed-off-by: Doug Berger --- arch/arm/mm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/arm/mm/mmu.c b/arch/arm/mm/mmu.c index 31af3cb59a60..74c0ed5c3b08 100644 --- a/arch/arm/mm/mmu.c +++ b/arch/arm/mm/mmu.c @@ -392,7 +392,7 @@ void __init early_fixmap_init(void) * The early fixmap range spans multiple pmds, for which * we are not prepared: */ - BUILD_BUG_ON((__fix_to_virt(__end_of_early_ioremap_region) >> PMD_SHIFT) + BUILD_BUG_ON((__fix_to_virt(__end_of_fixed_addresses) >> PMD_SHIFT) != FIXADDR_TOP >> PMD_SHIFT); pmd = fixmap_pmd(FIXADDR_TOP); -- 2.13.0