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-rw-r--r--Documentation/cachetlb.txt5
-rw-r--r--MAINTAINERS22
-rw-r--r--arch/arm/kernel/entry-armv.S12
-rw-r--r--arch/arm/kernel/time.c13
-rw-r--r--arch/arm/kernel/traps.c1
-rw-r--r--arch/arm/mm/flush.c39
-rw-r--r--drivers/mmc/mmci.c4
-rw-r--r--include/asm-arm/arch-iop32x/iop32x.h2
-rw-r--r--include/asm-arm/cacheflush.h10
-rw-r--r--include/asm-arm/hardware/iop3xx.h6
-rw-r--r--include/asm-parisc/cacheflush.h2
-rw-r--r--include/linux/highmem.h2
-rw-r--r--mm/memory.c2
13 files changed, 103 insertions, 17 deletions
diff --git a/Documentation/cachetlb.txt b/Documentation/cachetlb.txt
index 73e794f0ff0..debf6813934 100644
--- a/Documentation/cachetlb.txt
+++ b/Documentation/cachetlb.txt
@@ -373,14 +373,15 @@ maps this page at its virtual address.
likely that you will need to flush the instruction cache
for copy_to_user_page().
- void flush_anon_page(struct page *page, unsigned long vmaddr)
+ void flush_anon_page(struct vm_area_struct *vma, struct page *page,
+ unsigned long vmaddr)
When the kernel needs to access the contents of an anonymous
page, it calls this function (currently only
get_user_pages()). Note: flush_dcache_page() deliberately
doesn't work for an anonymous page. The default
implementation is a nop (and should remain so for all coherent
architectures). For incoherent architectures, it should flush
- the cache of the page at vmaddr in the current user process.
+ the cache of the page at vmaddr.
void flush_kernel_dcache_page(struct page *page)
When the kernel needs to modify a user page is has obtained
diff --git a/MAINTAINERS b/MAINTAINERS
index 2bd34ef58ff..4ccc5fa06d0 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -412,20 +412,32 @@ S: Maintained
ARM/INTEL IOP32X ARM ARCHITECTURE
P: Lennert Buytenhek
M: kernel@wantstofly.org
+P: Dan Williams
+M: dan.j.williams@intel.com
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S: Maintained
+S: Supported
+
+ARM/INTEL IOP33X ARM ARCHITECTURE
+P: Dan Williams
+M: dan.j.williams@intel.com
+L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
+S: Supported
ARM/INTEL IOP13XX ARM ARCHITECTURE
P: Lennert Buytenhek
M: kernel@wantstofly.org
+P: Dan Williams
+M: dan.j.williams@intel.com
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S: Maintained
+S: Supported
ARM/INTEL IQ81342EX MACHINE SUPPORT
P: Lennert Buytenhek
M: kernel@wantstofly.org
+P: Dan Williams
+M: dan.j.williams@intel.com
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S: Maintained
+S: Supported
ARM/INTEL IXP2000 ARM ARCHITECTURE
P: Lennert Buytenhek
@@ -448,8 +460,10 @@ S: Maintained
ARM/INTEL XSC3 (MANZANO) ARM CORE
P: Lennert Buytenhek
M: kernel@wantstofly.org
+P: Dan Williams
+M: dan.j.williams@intel.com
L: linux-arm-kernel@lists.arm.linux.org.uk (subscribers-only)
-S: Maintained
+S: Supported
ARM/IP FABRICS DOUBLE ESPRESSO MACHINE SUPPORT
P: Lennert Buytenhek
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 2db42b18f53..8517c3c3eb3 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -436,7 +436,7 @@ __und_usr:
usr_entry
tst r3, #PSR_T_BIT @ Thumb mode?
- bne fpundefinstr @ ignore FP
+ bne __und_usr_unknown @ ignore FP
sub r4, r2, #4
@
@@ -448,7 +448,7 @@ __und_usr:
@
1: ldrt r0, [r4]
adr r9, ret_from_exception
- adr lr, fpundefinstr
+ adr lr, __und_usr_unknown
@
@ fallthrough to call_fpe
@
@@ -476,7 +476,9 @@ __und_usr:
* Emulators may wish to make use of the following registers:
* r0 = instruction opcode.
* r2 = PC+4
+ * r9 = normal "successful" return address
* r10 = this threads thread_info structure.
+ * lr = unrecognised instruction return address
*/
call_fpe:
tst r0, #0x08000000 @ only CDP/CPRT/LDC/STC have bit 27
@@ -545,10 +547,12 @@ do_fpe:
.data
ENTRY(fp_enter)
- .word fpundefinstr
+ .word no_fp
.text
-fpundefinstr:
+no_fp: mov pc, lr
+
+__und_usr_unknown:
mov r0, sp
adr lr, ret_from_exception
b do_undefinstr
diff --git a/arch/arm/kernel/time.c b/arch/arm/kernel/time.c
index 6ff5e3ff6cb..3c8cdcfe8d4 100644
--- a/arch/arm/kernel/time.c
+++ b/arch/arm/kernel/time.c
@@ -29,6 +29,8 @@
#include <linux/timer.h>
#include <linux/irq.h>
+#include <linux/mc146818rtc.h>
+
#include <asm/leds.h>
#include <asm/thread_info.h>
#include <asm/mach/time.h>
@@ -85,6 +87,17 @@ unsigned long long __attribute__((weak)) sched_clock(void)
return (unsigned long long)jiffies * (1000000000 / HZ);
}
+/*
+ * An implementation of printk_clock() independent from
+ * sched_clock(). This avoids non-bootable kernels when
+ * printk_clock is enabled.
+ */
+unsigned long long printk_clock(void)
+{
+ return (unsigned long long)(jiffies - INITIAL_JIFFIES) *
+ (1000000000 / HZ);
+}
+
static unsigned long next_rtc_update;
/*
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 042a12982e9..908915675ed 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -27,6 +27,7 @@
#include <asm/uaccess.h>
#include <asm/unistd.h>
#include <asm/traps.h>
+#include <asm/io.h>
#include "ptrace.h"
#include "signal.h"
diff --git a/arch/arm/mm/flush.c b/arch/arm/mm/flush.c
index 628348c9f6c..9df507d36e0 100644
--- a/arch/arm/mm/flush.c
+++ b/arch/arm/mm/flush.c
@@ -202,3 +202,42 @@ void flush_dcache_page(struct page *page)
}
}
EXPORT_SYMBOL(flush_dcache_page);
+
+/*
+ * Flush an anonymous page so that users of get_user_pages()
+ * can safely access the data. The expected sequence is:
+ *
+ * get_user_pages()
+ * -> flush_anon_page
+ * memcpy() to/from page
+ * if written to page, flush_dcache_page()
+ */
+void __flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
+{
+ unsigned long pfn;
+
+ /* VIPT non-aliasing caches need do nothing */
+ if (cache_is_vipt_nonaliasing())
+ return;
+
+ /*
+ * Write back and invalidate userspace mapping.
+ */
+ pfn = page_to_pfn(page);
+ if (cache_is_vivt()) {
+ flush_cache_page(vma, vmaddr, pfn);
+ } else {
+ /*
+ * For aliasing VIPT, we can flush an alias of the
+ * userspace address only.
+ */
+ flush_pfn_alias(pfn, vmaddr);
+ }
+
+ /*
+ * Invalidate kernel mapping. No data should be contained
+ * in this mapping of the page. FIXME: this is overkill
+ * since we actually ask for a write-back and invalidate.
+ */
+ __cpuc_flush_dcache_page(page_address(page));
+}
diff --git a/drivers/mmc/mmci.c b/drivers/mmc/mmci.c
index e9b80e92026..ccfe6561be2 100644
--- a/drivers/mmc/mmci.c
+++ b/drivers/mmc/mmci.c
@@ -42,6 +42,8 @@ mmci_request_end(struct mmci_host *host, struct mmc_request *mrq)
{
writel(0, host->base + MMCICOMMAND);
+ BUG_ON(host->data);
+
host->mrq = NULL;
host->cmd = NULL;
@@ -198,6 +200,8 @@ mmci_cmd_irq(struct mmci_host *host, struct mmc_command *cmd,
}
if (!cmd->data || cmd->error != MMC_ERR_NONE) {
+ if (host->data)
+ mmci_stop_data(host);
mmci_request_end(host, cmd->mrq);
} else if (!(cmd->data->flags & MMC_DATA_READ)) {
mmci_start_data(host, cmd->data);
diff --git a/include/asm-arm/arch-iop32x/iop32x.h b/include/asm-arm/arch-iop32x/iop32x.h
index 4bbd85f3ed2..2e9469047eb 100644
--- a/include/asm-arm/arch-iop32x/iop32x.h
+++ b/include/asm-arm/arch-iop32x/iop32x.h
@@ -19,7 +19,7 @@
* Peripherals that are shared between the iop32x and iop33x but
* located at different addresses.
*/
-#define IOP3XX_GPIO_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07c0 + (reg))
+#define IOP3XX_GPIO_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07c4 + (reg))
#define IOP3XX_TIMER_REG(reg) (IOP3XX_PERIPHERAL_VIRT_BASE + 0x07e0 + (reg))
#include <asm/hardware/iop3xx.h>
diff --git a/include/asm-arm/cacheflush.h b/include/asm-arm/cacheflush.h
index d51049522cd..5f531ea0305 100644
--- a/include/asm-arm/cacheflush.h
+++ b/include/asm-arm/cacheflush.h
@@ -357,6 +357,16 @@ extern void flush_dcache_page(struct page *);
extern void __flush_dcache_page(struct address_space *mapping, struct page *page);
+#define ARCH_HAS_FLUSH_ANON_PAGE
+static inline void flush_anon_page(struct vm_area_struct *vma,
+ struct page *page, unsigned long vmaddr)
+{
+ extern void __flush_anon_page(struct vm_area_struct *vma,
+ struct page *, unsigned long);
+ if (PageAnon(page))
+ __flush_anon_page(vma, page, vmaddr);
+}
+
#define flush_dcache_mmap_lock(mapping) \
write_lock_irq(&(mapping)->tree_lock)
#define flush_dcache_mmap_unlock(mapping) \
diff --git a/include/asm-arm/hardware/iop3xx.h b/include/asm-arm/hardware/iop3xx.h
index 1018a7486ab..13ac8a4cd01 100644
--- a/include/asm-arm/hardware/iop3xx.h
+++ b/include/asm-arm/hardware/iop3xx.h
@@ -168,9 +168,9 @@ extern void gpio_line_set(int line, int value);
#define IOP3XX_PERCR0 (volatile u32 *)IOP3XX_REG_ADDR(0x0710)
/* General Purpose I/O */
-#define IOP3XX_GPOE (volatile u32 *)IOP3XX_GPIO_REG(0x0004)
-#define IOP3XX_GPID (volatile u32 *)IOP3XX_GPIO_REG(0x0008)
-#define IOP3XX_GPOD (volatile u32 *)IOP3XX_GPIO_REG(0x000c)
+#define IOP3XX_GPOE (volatile u32 *)IOP3XX_GPIO_REG(0x0000)
+#define IOP3XX_GPID (volatile u32 *)IOP3XX_GPIO_REG(0x0004)
+#define IOP3XX_GPOD (volatile u32 *)IOP3XX_GPIO_REG(0x0008)
/* Timers */
#define IOP3XX_TU_TMR0 (volatile u32 *)IOP3XX_TIMER_REG(0x0000)
diff --git a/include/asm-parisc/cacheflush.h b/include/asm-parisc/cacheflush.h
index aedb0512cb0..a799dd8ef39 100644
--- a/include/asm-parisc/cacheflush.h
+++ b/include/asm-parisc/cacheflush.h
@@ -186,7 +186,7 @@ flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long
}
static inline void
-flush_anon_page(struct page *page, unsigned long vmaddr)
+flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
{
if (PageAnon(page))
flush_user_dcache_page(vmaddr);
diff --git a/include/linux/highmem.h b/include/linux/highmem.h
index ca9a602cffd..645d440807c 100644
--- a/include/linux/highmem.h
+++ b/include/linux/highmem.h
@@ -8,7 +8,7 @@
#include <asm/cacheflush.h>
#ifndef ARCH_HAS_FLUSH_ANON_PAGE
-static inline void flush_anon_page(struct page *page, unsigned long vmaddr)
+static inline void flush_anon_page(struct vm_area_struct *vma, struct page *page, unsigned long vmaddr)
{
}
#endif
diff --git a/mm/memory.c b/mm/memory.c
index 563792f4f68..af227d26e10 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1091,7 +1091,7 @@ int get_user_pages(struct task_struct *tsk, struct mm_struct *mm,
if (pages) {
pages[i] = page;
- flush_anon_page(page, start);
+ flush_anon_page(vma, page, start);
flush_dcache_page(page);
}
if (vmas)
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-24 04:11:18 +0000