From: Oliver O'Halloran <oohall@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: bsingharora@gmail.com, arbab@linux.vnet.ibm.com,
linux-nvdimm@lists.01.org
Subject: [PATCH 7/9] powerpc/mm: Wire up ioremap_cache
Date: Wed, 12 Apr 2017 03:42:31 +1000 [thread overview]
Message-ID: <20170411174233.21902-8-oohall@gmail.com> (raw)
In-Reply-To: <20170411174233.21902-1-oohall@gmail.com>
The default implementation of ioremap_cache() is aliased to ioremap().
On powerpc ioremap() creates cache-inhibited mappings by default which
is almost certainly not what you wanted.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
---
arch/powerpc/include/asm/io.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 5ed292431b5b..839eb031857f 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -757,6 +757,8 @@ extern void __iomem *ioremap_prot(phys_addr_t address, unsigned long size,
extern void __iomem *ioremap_wc(phys_addr_t address, unsigned long size);
#define ioremap_nocache(addr, size) ioremap((addr), (size))
#define ioremap_uc(addr, size) ioremap((addr), (size))
+#define ioremap_cache(addr, size) \
+ ioremap_prot((addr), (size), pgprot_val(PAGE_KERNEL))
extern void iounmap(volatile void __iomem *addr);
--
2.9.3
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WARNING: multiple messages have this Message-ID (diff)
From: Oliver O'Halloran <oohall@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: arbab@linux.vnet.ibm.com, bsingharora@gmail.com,
linux-nvdimm@lists.01.org, Oliver O'Halloran <oohall@gmail.com>
Subject: [PATCH 7/9] powerpc/mm: Wire up ioremap_cache
Date: Wed, 12 Apr 2017 03:42:31 +1000 [thread overview]
Message-ID: <20170411174233.21902-8-oohall@gmail.com> (raw)
In-Reply-To: <20170411174233.21902-1-oohall@gmail.com>
The default implementation of ioremap_cache() is aliased to ioremap().
On powerpc ioremap() creates cache-inhibited mappings by default which
is almost certainly not what you wanted.
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
---
arch/powerpc/include/asm/io.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index 5ed292431b5b..839eb031857f 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -757,6 +757,8 @@ extern void __iomem *ioremap_prot(phys_addr_t address, unsigned long size,
extern void __iomem *ioremap_wc(phys_addr_t address, unsigned long size);
#define ioremap_nocache(addr, size) ioremap((addr), (size))
#define ioremap_uc(addr, size) ioremap((addr), (size))
+#define ioremap_cache(addr, size) \
+ ioremap_prot((addr), (size), pgprot_val(PAGE_KERNEL))
extern void iounmap(volatile void __iomem *addr);
--
2.9.3
next prev parent reply other threads:[~2017-04-11 17:43 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-04-11 17:42 ZONE_DEVICE and pmem API support for powerpc Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-11 17:42 ` [PATCH 1/9] mm/huge_memory: Use zap_deposited_table() more Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-12 5:44 ` Aneesh Kumar K.V
2017-04-12 5:44 ` Aneesh Kumar K.V
2017-04-18 21:35 ` David Rientjes
2017-04-18 21:35 ` David Rientjes
2017-04-11 17:42 ` [PATCH 2/9] mm/huge_memory: Deposit a pgtable for DAX PMD faults when required Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-12 5:51 ` Aneesh Kumar K.V
2017-04-12 5:51 ` Aneesh Kumar K.V
2017-04-12 5:51 ` Aneesh Kumar K.V
2017-04-11 17:42 ` [PATCH 3/9] powerpc/mm: Add _PAGE_DEVMAP for ppc64 Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-12 0:19 ` Stephen Rothwell
2017-04-12 0:19 ` Stephen Rothwell
2017-04-12 3:07 ` Aneesh Kumar K.V
2017-04-12 3:07 ` Aneesh Kumar K.V
2017-04-13 5:20 ` Aneesh Kumar K.V
2017-04-13 5:20 ` Aneesh Kumar K.V
2017-04-11 17:42 ` [PATCH 4/9] powerpc/mm: Reshuffle vmemmap_free() Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-12 0:33 ` Stephen Rothwell
2017-04-12 0:33 ` Stephen Rothwell
2017-04-11 17:42 ` [PATCH 5/9] powerpc/vmemmap: Add altmap support Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-12 0:24 ` Balbir Singh
2017-04-12 0:24 ` Balbir Singh
2017-04-11 17:42 ` [PATCH 6/9] powerpc, mm: Enable ZONE_DEVICE on powerpc Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-12 0:25 ` Balbir Singh
2017-04-12 0:25 ` Balbir Singh
2017-04-12 0:43 ` Stephen Rothwell
2017-04-12 0:43 ` Stephen Rothwell
2017-04-12 2:03 ` Michael Ellerman
2017-04-12 2:03 ` Michael Ellerman
2017-04-11 17:42 ` Oliver O'Halloran [this message]
2017-04-11 17:42 ` [PATCH 7/9] powerpc/mm: Wire up ioremap_cache Oliver O'Halloran
2017-04-23 11:53 ` [7/9] " Michael Ellerman
2017-04-23 11:53 ` Michael Ellerman
2017-04-11 17:42 ` [PATCH 8/9] powerpc/mm: Wire up hpte_removebolted for powernv Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
[not found] ` <20170411174233.21902-9-oohall-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
2017-04-11 22:50 ` Anton Blanchard
2017-04-11 22:50 ` Anton Blanchard
2017-04-12 0:18 ` Stephen Rothwell
2017-04-12 0:18 ` Stephen Rothwell
2017-04-12 3:30 ` Rashmica Gupta
2017-04-12 3:30 ` Rashmica Gupta
2017-04-12 1:53 ` Balbir Singh
2017-04-12 1:53 ` Balbir Singh
2017-04-13 4:21 ` Oliver O'Halloran
2017-04-13 4:21 ` Oliver O'Halloran
2017-04-13 10:10 ` Michael Ellerman
2017-04-13 10:10 ` Michael Ellerman
2017-04-11 17:42 ` [PATCH 9/9] powerpc: Add pmem API support Oliver O'Halloran
2017-04-11 17:42 ` Oliver O'Halloran
2017-04-11 18:22 ` ZONE_DEVICE and pmem API support for powerpc Dan Williams
2017-04-11 18:22 ` Dan Williams
2017-04-12 9:14 ` Oliver O'Halloran
2017-04-12 9:14 ` Oliver O'Halloran
2017-04-12 1:10 ` Stephen Rothwell
2017-04-12 1:10 ` Stephen Rothwell
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