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authorLinus Torvalds <torvalds@linux-foundation.org>2015-09-01 10:07:40 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2015-09-01 10:07:40 -0700
commit25525bea46e7d5bc1f82cbc12de2f27b9c346a92 (patch)
tree9308304c84f0f776f6477662335bff9a9b0d1327 /arch
parent2962156d5cc0e7f959353d3f5275da7cc3765f06 (diff)
parent2baa891e42d84159b693eadd44f6fe1486285bdc (diff)
Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 mm updates from Ingo Molnar: "The dominant change in this cycle was the continued work to isolate kernel drivers from MTRR legacies: this tree gets rid of all kernel internal driver interfaces to MTRRs (mostly by rewriting it to proper PAT interfaces), the only access left is the /proc/mtrr ABI. This work was done by Luis R Rodriguez. There's also some related PCI interface additions for which I've Cc:-ed Bjorn" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (21 commits) x86/mm/mtrr: Remove kernel internal MTRR interfaces: unexport mtrr_add() and mtrr_del() s390/io: Add pci_iomap_wc() and pci_iomap_wc_range() drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style drivers/video/fbdev/vt8623fb: Use arch_phys_wc_add() and pci_iomap_wc() drivers/video/fbdev/s3fb: Use arch_phys_wc_add() and pci_iomap_wc() drivers/video/fbdev/arkfb.c: Use arch_phys_wc_add() and pci_iomap_wc() PCI: Add pci_iomap_wc() variants drivers/video/fbdev/gxt4500: Use pci_ioremap_wc_bar() to map framebuffer drivers/video/fbdev/kyrofb: Use arch_phys_wc_add() and pci_ioremap_wc_bar() drivers/video/fbdev/i740fb: Use arch_phys_wc_add() and pci_ioremap_wc_bar() PCI: Add pci_ioremap_wc_bar() x86/mm: Make kernel/check.c explicitly non-modular x86/mm/pat: Make mm/pageattr[-test].c explicitly non-modular x86/mm/pat: Add comments to cachemode translation tables arch/*/io.h: Add ioremap_uc() to all architectures drivers/video/fbdev/atyfb: Use arch_phys_wc_add() and ioremap_wc() drivers/video/fbdev/atyfb: Replace MTRR UC hole with strong UC drivers/video/fbdev/atyfb: Clarify ioremap() base and length used drivers/video/fbdev/atyfb: Carve out framebuffer length fudging into a helper x86/mm, asm-generic: Add IOMMU ioremap_uc() variant default ...
Diffstat (limited to 'arch')
-rw-r--r--arch/avr32/include/asm/io.h1
-rw-r--r--arch/frv/include/asm/io.h1
-rw-r--r--arch/m32r/include/asm/io.h1
-rw-r--r--arch/m68k/include/asm/io_mm.h1
-rw-r--r--arch/mn10300/include/asm/io.h1
-rw-r--r--arch/powerpc/include/asm/io.h1
-rw-r--r--arch/s390/include/asm/io.h2
-rw-r--r--arch/sh/include/asm/io.h1
-rw-r--r--arch/tile/include/asm/io.h1
-rw-r--r--arch/x86/include/asm/io.h2
-rw-r--r--arch/x86/kernel/check.c5
-rw-r--r--arch/x86/kernel/cpu/mtrr/main.c2
-rw-r--r--arch/x86/mm/init.c7
-rw-r--r--arch/x86/mm/init_32.c1
-rw-r--r--arch/x86/mm/pageattr-test.c4
-rw-r--r--arch/x86/mm/pageattr.c1
16 files changed, 22 insertions, 10 deletions
diff --git a/arch/avr32/include/asm/io.h b/arch/avr32/include/asm/io.h
index e998ff5d8e1a..f855646e0db7 100644
--- a/arch/avr32/include/asm/io.h
+++ b/arch/avr32/include/asm/io.h
@@ -297,6 +297,7 @@ extern void __iounmap(void __iomem *addr);
#define ioremap_wc ioremap_nocache
#define ioremap_wt ioremap_nocache
+#define ioremap_uc ioremap_nocache
#define cached(addr) P1SEGADDR(addr)
#define uncached(addr) P2SEGADDR(addr)
diff --git a/arch/frv/include/asm/io.h b/arch/frv/include/asm/io.h
index a31b63ec4930..70dfbea8c8d7 100644
--- a/arch/frv/include/asm/io.h
+++ b/arch/frv/include/asm/io.h
@@ -278,6 +278,7 @@ static inline void __iomem *ioremap_fullcache(unsigned long physaddr, unsigned l
}
#define ioremap_wc ioremap_nocache
+#define ioremap_uc ioremap_nocache
extern void iounmap(void volatile __iomem *addr);
diff --git a/arch/m32r/include/asm/io.h b/arch/m32r/include/asm/io.h
index f8de767ce2bc..61b8931bc192 100644
--- a/arch/m32r/include/asm/io.h
+++ b/arch/m32r/include/asm/io.h
@@ -69,6 +69,7 @@ extern void iounmap(volatile void __iomem *addr);
#define ioremap_nocache(off,size) ioremap(off,size)
#define ioremap_wc ioremap_nocache
#define ioremap_wt ioremap_nocache
+#define ioremap_uc ioremap_nocache
/*
* IO bus memory addresses are also 1:1 with the physical address
diff --git a/arch/m68k/include/asm/io_mm.h b/arch/m68k/include/asm/io_mm.h
index f55cad529400..c98ac81582ac 100644
--- a/arch/m68k/include/asm/io_mm.h
+++ b/arch/m68k/include/asm/io_mm.h
@@ -468,6 +468,7 @@ static inline void __iomem *ioremap_nocache(unsigned long physaddr, unsigned lon
{
return __ioremap(physaddr, size, IOMAP_NOCACHE_SER);
}
+#define ioremap_uc ioremap_nocache
static inline void __iomem *ioremap_wt(unsigned long physaddr,
unsigned long size)
{
diff --git a/arch/mn10300/include/asm/io.h b/arch/mn10300/include/asm/io.h
index 07c5b4a3903b..62189353d2f6 100644
--- a/arch/mn10300/include/asm/io.h
+++ b/arch/mn10300/include/asm/io.h
@@ -283,6 +283,7 @@ static inline void __iomem *ioremap_nocache(unsigned long offset, unsigned long
#define ioremap_wc ioremap_nocache
#define ioremap_wt ioremap_nocache
+#define ioremap_uc ioremap_nocache
static inline void iounmap(void __iomem *addr)
{
diff --git a/arch/powerpc/include/asm/io.h b/arch/powerpc/include/asm/io.h
index a8d2ef30d473..5879fde56f3c 100644
--- a/arch/powerpc/include/asm/io.h
+++ b/arch/powerpc/include/asm/io.h
@@ -721,6 +721,7 @@ extern void __iomem *ioremap_prot(phys_addr_t address, unsigned long size,
unsigned long flags);
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))
extern void iounmap(volatile void __iomem *addr);
diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h
index cb5fdf3a78fc..437e9af96688 100644
--- a/arch/s390/include/asm/io.h
+++ b/arch/s390/include/asm/io.h
@@ -57,6 +57,8 @@ static inline void ioport_unmap(void __iomem *p)
*/
#define pci_iomap pci_iomap
#define pci_iounmap pci_iounmap
+#define pci_iomap_wc pci_iomap
+#define pci_iomap_wc_range pci_iomap_range
#define memcpy_fromio(dst, src, count) zpci_memcpy_fromio(dst, src, count)
#define memcpy_toio(dst, src, count) zpci_memcpy_toio(dst, src, count)
diff --git a/arch/sh/include/asm/io.h b/arch/sh/include/asm/io.h
index 728c4c571f40..93ec9066dbef 100644
--- a/arch/sh/include/asm/io.h
+++ b/arch/sh/include/asm/io.h
@@ -368,6 +368,7 @@ static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; }
#endif
#define ioremap_nocache ioremap
+#define ioremap_uc ioremap
#define iounmap __iounmap
/*
diff --git a/arch/tile/include/asm/io.h b/arch/tile/include/asm/io.h
index dc61de15c1f9..322b5fe94781 100644
--- a/arch/tile/include/asm/io.h
+++ b/arch/tile/include/asm/io.h
@@ -55,6 +55,7 @@ extern void iounmap(volatile void __iomem *addr);
#define ioremap_nocache(physaddr, size) ioremap(physaddr, size)
#define ioremap_wc(physaddr, size) ioremap(physaddr, size)
#define ioremap_wt(physaddr, size) ioremap(physaddr, size)
+#define ioremap_uc(physaddr, size) ioremap(physaddr, size)
#define ioremap_fullcache(physaddr, size) ioremap(physaddr, size)
#define mmiowb()
diff --git a/arch/x86/include/asm/io.h b/arch/x86/include/asm/io.h
index cc9c61bc1abe..7cfc085b6879 100644
--- a/arch/x86/include/asm/io.h
+++ b/arch/x86/include/asm/io.h
@@ -180,6 +180,8 @@ static inline unsigned int isa_virt_to_bus(volatile void *address)
*/
extern void __iomem *ioremap_nocache(resource_size_t offset, unsigned long size);
extern void __iomem *ioremap_uc(resource_size_t offset, unsigned long size);
+#define ioremap_uc ioremap_uc
+
extern void __iomem *ioremap_cache(resource_size_t offset, unsigned long size);
extern void __iomem *ioremap_prot(resource_size_t offset, unsigned long size,
unsigned long prot_val);
diff --git a/arch/x86/kernel/check.c b/arch/x86/kernel/check.c
index 58118e207a69..145863d4d343 100644
--- a/arch/x86/kernel/check.c
+++ b/arch/x86/kernel/check.c
@@ -1,4 +1,4 @@
-#include <linux/module.h>
+#include <linux/init.h>
#include <linux/sched.h>
#include <linux/kthread.h>
#include <linux/workqueue.h>
@@ -163,6 +163,5 @@ static int start_periodic_check_for_corruption(void)
schedule_delayed_work(&bios_check_work, 0);
return 0;
}
-
-module_init(start_periodic_check_for_corruption);
+device_initcall(start_periodic_check_for_corruption);
diff --git a/arch/x86/kernel/cpu/mtrr/main.c b/arch/x86/kernel/cpu/mtrr/main.c
index e7ed0d8ebacb..f891b4750f04 100644
--- a/arch/x86/kernel/cpu/mtrr/main.c
+++ b/arch/x86/kernel/cpu/mtrr/main.c
@@ -448,7 +448,6 @@ int mtrr_add(unsigned long base, unsigned long size, unsigned int type,
return mtrr_add_page(base >> PAGE_SHIFT, size >> PAGE_SHIFT, type,
increment);
}
-EXPORT_SYMBOL(mtrr_add);
/**
* mtrr_del_page - delete a memory type region
@@ -537,7 +536,6 @@ int mtrr_del(int reg, unsigned long base, unsigned long size)
return -EINVAL;
return mtrr_del_page(reg, base >> PAGE_SHIFT, size >> PAGE_SHIFT);
}
-EXPORT_SYMBOL(mtrr_del);
/**
* arch_phys_wc_add - add a WC MTRR and handle errors if PAT is unavailable
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 8533b46e6bee..1d8a83df153a 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -30,8 +30,11 @@
/*
* Tables translating between page_cache_type_t and pte encoding.
*
- * Minimal supported modes are defined statically, they are modified
- * during bootup if more supported cache modes are available.
+ * The default values are defined statically as minimal supported mode;
+ * WC and WT fall back to UC-. pat_init() updates these values to support
+ * more cache modes, WC and WT, when it is safe to do so. See pat_init()
+ * for the details. Note, __early_ioremap() used during early boot-time
+ * takes pgprot_t (pte encoding) and does not use these tables.
*
* Index into __cachemode2pte_tbl[] is the cachemode.
*
diff --git a/arch/x86/mm/init_32.c b/arch/x86/mm/init_32.c
index 8340e45c891a..68aec42545c2 100644
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -137,6 +137,7 @@ page_table_range_init_count(unsigned long start, unsigned long end)
vaddr = start;
pgd_idx = pgd_index(vaddr);
+ pmd_idx = pmd_index(vaddr);
for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd_idx++) {
for (; (pmd_idx < PTRS_PER_PMD) && (vaddr != end);
diff --git a/arch/x86/mm/pageattr-test.c b/arch/x86/mm/pageattr-test.c
index 8ff686aa7e8c..5f169d5d76a8 100644
--- a/arch/x86/mm/pageattr-test.c
+++ b/arch/x86/mm/pageattr-test.c
@@ -8,6 +8,7 @@
#include <linux/kthread.h>
#include <linux/random.h>
#include <linux/kernel.h>
+#include <linux/init.h>
#include <linux/mm.h>
#include <linux/vmalloc.h>
@@ -256,5 +257,4 @@ static int start_pageattr_test(void)
return 0;
}
-
-module_init(start_pageattr_test);
+device_initcall(start_pageattr_test);
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 727158cb3b3c..2c44c0792301 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -4,7 +4,6 @@
*/
#include <linux/highmem.h>
#include <linux/bootmem.h>
-#include <linux/module.h>
#include <linux/sched.h>
#include <linux/mm.h>
#include <linux/interrupt.h>