From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Cc: Andrey Smirnov <andrew.smirnov@gmail.com>,
Ulrich Oelmann <uol@pengutronix.de>
Subject: [PATCH] ARM: MMU: fix arch_remap_range() across section boundaries
Date: Tue, 10 Jul 2018 16:12:12 +0200 [thread overview]
Message-ID: <20180710141212.5787-1-s.hauer@pengutronix.de> (raw)
Fixes: e3e54c6441 ARM: mmu: Implement on-demand PTE allocation
PGD_FLAGS_WC_V7 lacks the PMD_TYPE_SECT and PMD_SECT_BUFFERABLE flags.
Without them a dma_alloc_writecombine() creates an invalid section when
it crosses a section boundary.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
arch/arm/cpu/mmu.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/cpu/mmu.c b/arch/arm/cpu/mmu.c
index 7e2e5bf7e0..ae189ecdeb 100644
--- a/arch/arm/cpu/mmu.c
+++ b/arch/arm/cpu/mmu.c
@@ -61,7 +61,7 @@ static inline void tlb_invalidate(void)
#define PTE_FLAGS_UNCACHED_V7 (0)
#define PTE_FLAGS_CACHED_V4 (PTE_SMALL_AP_UNO_SRW | PTE_BUFFERABLE | PTE_CACHEABLE)
#define PTE_FLAGS_UNCACHED_V4 PTE_SMALL_AP_UNO_SRW
-#define PGD_FLAGS_WC_V7 PMD_SECT_TEX(1)
+#define PGD_FLAGS_WC_V7 (PMD_SECT_TEX(1) | PMD_TYPE_SECT | PMD_SECT_BUFFERABLE)
/*
* PTE flags to set cached and uncached areas.
--
2.18.0
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next reply other threads:[~2018-07-10 14:12 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-10 14:12 Sascha Hauer [this message]
2018-07-11 12:26 ` Lucas Stach
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