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-rw-r--r--arch/cris/mm/fault.c252
-rw-r--r--arch/cris/mm/init.c199
-rw-r--r--arch/cris/mm/ioremap.c90
-rw-r--r--arch/cris/mm/tlb.c5
4 files changed, 103 insertions, 443 deletions
diff --git a/arch/cris/mm/fault.c b/arch/cris/mm/fault.c
index 934c51078cc..1790f22e71a 100644
--- a/arch/cris/mm/fault.c
+++ b/arch/cris/mm/fault.c
@@ -1,141 +1,19 @@
/*
- * linux/arch/cris/mm/fault.c
- *
- * Copyright (C) 2000, 2001 Axis Communications AB
- *
- * Authors: Bjorn Wesen
- *
- * $Log: fault.c,v $
- * Revision 1.20 2005/03/04 08:16:18 starvik
- * Merge of Linux 2.6.11.
- *
- * Revision 1.19 2005/01/14 10:07:59 starvik
- * Fixed warning.
- *
- * Revision 1.18 2005/01/12 08:10:14 starvik
- * Readded the change of frametype when handling kernel page fault fixup
- * for v10. This is necessary to avoid that the CPU remakes the faulting
- * access.
- *
- * Revision 1.17 2005/01/11 13:53:05 starvik
- * Use raw_printk.
- *
- * Revision 1.16 2004/12/17 11:39:41 starvik
- * SMP support.
- *
- * Revision 1.15 2004/11/23 18:36:18 starvik
- * Stack is now non-executable.
- * Signal handler trampolines are placed in a reserved page mapped into all
- * processes.
- *
- * Revision 1.14 2004/11/23 07:10:21 starvik
- * Moved find_fixup_code to generic code.
- *
- * Revision 1.13 2004/11/23 07:00:54 starvik
- * Actually use the execute permission bit in the MMU. This makes it possible
- * to prevent e.g. attacks where executable code is put on the stack.
- *
- * Revision 1.12 2004/09/29 06:16:04 starvik
- * Use instruction_pointer
- *
- * Revision 1.11 2004/05/14 07:58:05 starvik
- * Merge of changes from 2.4
- *
- * Revision 1.10 2003/10/27 14:51:24 starvik
- * Removed debugcode
- *
- * Revision 1.9 2003/10/27 14:50:42 starvik
- * Changed do_page_fault signature
- *
- * Revision 1.8 2003/07/04 13:02:48 tobiasa
- * Moved code snippet from arch/cris/mm/fault.c that searches for fixup code
- * to seperate function in arch-specific files.
- *
- * Revision 1.7 2003/01/22 06:48:38 starvik
- * Fixed warnings issued by GCC 3.2.1
- *
- * Revision 1.6 2003/01/09 14:42:52 starvik
- * Merge of Linux 2.5.55
- *
- * Revision 1.5 2002/12/11 14:44:48 starvik
- * Extracted v10 (ETRAX 100LX) specific stuff to arch/cris/arch-v10/mm
- *
- * Revision 1.4 2002/11/13 15:10:28 starvik
- * pte_offset has been renamed to pte_offset_kernel
- *
- * Revision 1.3 2002/11/05 06:45:13 starvik
- * Merge of Linux 2.5.45
- *
- * Revision 1.2 2001/12/18 13:35:22 bjornw
- * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
- *
- * Revision 1.20 2001/11/22 13:34:06 bjornw
- * * Bug workaround (LX TR89): force a rerun of the whole of an interrupted
- * unaligned write, because the second half of the write will be corrupted
- * otherwise. Affected unaligned writes spanning not-yet mapped pages.
- * * Optimization: use the wr_rd bit in R_MMU_CAUSE to know whether a miss
- * was due to a read or a write (before we didn't know this until the next
- * restart of the interrupted instruction, thus wasting one fault-irq)
- *
- * Revision 1.19 2001/11/12 19:02:10 pkj
- * Fixed compiler warnings.
- *
- * Revision 1.18 2001/07/18 22:14:32 bjornw
- * Enable interrupts in the bulk of do_page_fault
- *
- * Revision 1.17 2001/07/18 13:07:23 bjornw
- * * Detect non-existant PTE's in vmalloc pmd synchronization
- * * Remove comment about fast-paths for VMALLOC_START etc, because all that
- * was totally bogus anyway it turned out :)
- * * Fix detection of vmalloc-area synchronization
- * * Add some comments
- *
- * Revision 1.16 2001/06/13 00:06:08 bjornw
- * current_pgd should be volatile
- *
- * Revision 1.15 2001/06/13 00:02:23 bjornw
- * Use a separate variable to store the current pgd to avoid races in schedule
- *
- * Revision 1.14 2001/05/16 17:41:07 hp
- * Last comment tweak further tweaked.
- *
- * Revision 1.13 2001/05/15 00:58:44 hp
- * Expand a bit on the comment why we compare address >= TASK_SIZE rather
- * than >= VMALLOC_START.
- *
- * Revision 1.12 2001/04/04 10:51:14 bjornw
- * mmap_sem is grabbed for reading
- *
- * Revision 1.11 2001/03/23 07:36:07 starvik
- * Corrected according to review remarks
- *
- * Revision 1.10 2001/03/21 16:10:11 bjornw
- * CRIS_FRAME_FIXUP not needed anymore, use FRAME_NORMAL
- *
- * Revision 1.9 2001/03/05 13:22:20 bjornw
- * Spell-fix and fix in vmalloc_fault handling
- *
- * Revision 1.8 2000/11/22 14:45:31 bjornw
- * * 2.4.0-test10 removed the set_pgdir instantaneous kernel global mapping
- * into all processes. Instead we fill in the missing PTE entries on demand.
- *
- * Revision 1.7 2000/11/21 16:39:09 bjornw
- * fixup switches frametype
- *
- * Revision 1.6 2000/11/17 16:54:08 bjornw
- * More detailed siginfo reporting
- *
+ * arch/cris/mm/fault.c
*
+ * Copyright (C) 2000-2010 Axis Communications AB
*/
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <linux/module.h>
+#include <linux/wait.h>
#include <asm/uaccess.h>
+#include <arch/system.h>
extern int find_fixup_code(struct pt_regs *);
extern void die_if_kernel(const char *, struct pt_regs *, long);
-extern int raw_printk(const char *fmt, ...);
+extern void show_registers(struct pt_regs *regs);
/* debug of low-level TLB reload */
#undef DEBUG
@@ -151,7 +29,7 @@ extern int raw_printk(const char *fmt, ...);
/* current active page directory */
-volatile DEFINE_PER_CPU(pgd_t *,current_pgd);
+DEFINE_PER_CPU(pgd_t *, current_pgd);
unsigned long cris_signal_return_page;
/*
@@ -164,8 +42,8 @@ unsigned long cris_signal_return_page;
* address.
*
* error_code:
- * bit 0 == 0 means no page found, 1 means protection fault
- * bit 1 == 0 means read, 1 means write
+ * bit 0 == 0 means no page found, 1 means protection fault
+ * bit 1 == 0 means read, 1 means write
*
* If this routine detects a bad access, it returns 1, otherwise it
* returns 0.
@@ -179,10 +57,13 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
struct mm_struct *mm;
struct vm_area_struct * vma;
siginfo_t info;
+ int fault;
+ unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
- D(printk("Page fault for %lX on %X at %lX, prot %d write %d\n",
- address, smp_processor_id(), instruction_pointer(regs),
- protection, writeaccess));
+ D(printk(KERN_DEBUG
+ "Page fault for %lX on %X at %lX, prot %d write %d\n",
+ address, smp_processor_id(), instruction_pointer(regs),
+ protection, writeaccess));
tsk = current;
@@ -228,13 +109,16 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
info.si_code = SEGV_MAPERR;
/*
- * If we're in an interrupt or have no user
- * context, we must not take the fault..
+ * If we're in an interrupt or "atomic" operation or have no
+ * user context, we must not take the fault.
*/
- if (in_interrupt() || !mm)
+ if (in_atomic() || !mm)
goto no_context;
+ if (user_mode(regs))
+ flags |= FAULT_FLAG_USER;
+retry:
down_read(&mm->mmap_sem);
vma = find_vma(mm, address);
if (!vma)
@@ -272,6 +156,7 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
} else if (writeaccess == 1) {
if (!(vma->vm_flags & VM_WRITE))
goto bad_area;
+ flags |= FAULT_FLAG_WRITE;
} else {
if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
goto bad_area;
@@ -283,17 +168,36 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
* the fault.
*/
- switch (handle_mm_fault(mm, vma, address, writeaccess & 1)) {
- case VM_FAULT_MINOR:
- tsk->min_flt++;
- break;
- case VM_FAULT_MAJOR:
- tsk->maj_flt++;
- break;
- case VM_FAULT_SIGBUS:
- goto do_sigbus;
- default:
- goto out_of_memory;
+ fault = handle_mm_fault(mm, vma, address, flags);
+
+ if ((fault & VM_FAULT_RETRY) && fatal_signal_pending(current))
+ return;
+
+ if (unlikely(fault & VM_FAULT_ERROR)) {
+ if (fault & VM_FAULT_OOM)
+ goto out_of_memory;
+ else if (fault & VM_FAULT_SIGBUS)
+ goto do_sigbus;
+ BUG();
+ }
+
+ if (flags & FAULT_FLAG_ALLOW_RETRY) {
+ if (fault & VM_FAULT_MAJOR)
+ tsk->maj_flt++;
+ else
+ tsk->min_flt++;
+ if (fault & VM_FAULT_RETRY) {
+ flags &= ~FAULT_FLAG_ALLOW_RETRY;
+ flags |= FAULT_FLAG_TRIED;
+
+ /*
+ * No need to up_read(&mm->mmap_sem) as we would
+ * have already released it in __lock_page_or_retry
+ * in mm/filemap.c.
+ */
+
+ goto retry;
+ }
}
up_read(&mm->mmap_sem);
@@ -313,11 +217,25 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
/* User mode accesses just cause a SIGSEGV */
if (user_mode(regs)) {
+ printk(KERN_NOTICE "%s (pid %d) segfaults for page "
+ "address %08lx at pc %08lx\n",
+ tsk->comm, tsk->pid,
+ address, instruction_pointer(regs));
+
+ /* With DPG on, we've already dumped registers above. */
+ DPG(if (0))
+ show_registers(regs);
+
+#ifdef CONFIG_NO_SEGFAULT_TERMINATION
+ DECLARE_WAIT_QUEUE_HEAD(wq);
+ wait_event_interruptible(wq, 0 == 1);
+#else
info.si_signo = SIGSEGV;
info.si_errno = 0;
/* info.si_code has been set above */
info.si_addr = (void *)address;
force_sig_info(SIGSEGV, &info, tsk);
+#endif
return;
}
@@ -325,8 +243,8 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
/* Are we prepared to handle this kernel fault?
*
- * (The kernel has valid exception-points in the source
- * when it acesses user-memory. When it fails in one
+ * (The kernel has valid exception-points in the source
+ * when it accesses user-memory. When it fails in one
* of those points, we find it in a table and do a jump
* to some fixup code that loads an appropriate error
* code)
@@ -340,13 +258,18 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
* terminate things with extreme prejudice.
*/
- if ((unsigned long) (address) < PAGE_SIZE)
- raw_printk(KERN_ALERT "Unable to handle kernel NULL pointer dereference");
- else
- raw_printk(KERN_ALERT "Unable to handle kernel access");
- raw_printk(" at virtual address %08lx\n",address);
-
- die_if_kernel("Oops", regs, (writeaccess << 1) | protection);
+ if (!oops_in_progress) {
+ oops_in_progress = 1;
+ if ((unsigned long) (address) < PAGE_SIZE)
+ printk(KERN_ALERT "Unable to handle kernel NULL "
+ "pointer dereference");
+ else
+ printk(KERN_ALERT "Unable to handle kernel access"
+ " at virtual address %08lx\n", address);
+
+ die_if_kernel("Oops", regs, (writeaccess << 1) | protection);
+ oops_in_progress = 0;
+ }
do_exit(SIGKILL);
@@ -357,10 +280,10 @@ do_page_fault(unsigned long address, struct pt_regs *regs,
out_of_memory:
up_read(&mm->mmap_sem);
- printk("VM: killing process %s\n", tsk->comm);
- if (user_mode(regs))
- do_exit(SIGKILL);
- goto no_context;
+ if (!user_mode(regs))
+ goto no_context;
+ pagefault_out_of_memory();
+ return;
do_sigbus:
up_read(&mm->mmap_sem);
@@ -405,8 +328,8 @@ vmalloc_fault:
/* Since we're two-level, we don't need to do both
* set_pgd and set_pmd (they do the same thing). If
* we go three-level at some point, do the right thing
- * with pgd_present and set_pgd here.
- *
+ * with pgd_present and set_pgd here.
+ *
* Also, since the vmalloc area is global, we don't
* need to copy individual PTE's, it is enough to
* copy the pgd pointer into the pte page of the
@@ -446,8 +369,11 @@ int
find_fixup_code(struct pt_regs *regs)
{
const struct exception_table_entry *fixup;
+ /* in case of delay slot fault (v32) */
+ unsigned long ip = (instruction_pointer(regs) & ~0x1);
- if ((fixup = search_exception_tables(instruction_pointer(regs))) != 0) {
+ fixup = search_exception_tables(ip);
+ if (fixup != 0) {
/* Adjust the instruction pointer in the stackframe. */
instruction_pointer(regs) = fixup->fixup;
arch_fixup(regs);
diff --git a/arch/cris/mm/init.c b/arch/cris/mm/init.c
index b7842ff213a..c81af5bd916 100644
--- a/arch/cris/mm/init.c
+++ b/arch/cris/mm/init.c
@@ -6,204 +6,29 @@
*
* Authors: Bjorn Wesen (bjornw@axis.com)
*
- * $Log: init.c,v $
- * Revision 1.11 2004/05/28 09:28:56 starvik
- * Calculation of loops_per_usec moved because initalization order has changed
- * in Linux 2.6.
- *
- * Revision 1.10 2004/05/14 07:58:05 starvik
- * Merge of changes from 2.4
- *
- * Revision 1.9 2003/07/04 08:27:54 starvik
- * Merge of Linux 2.5.74
- *
- * Revision 1.8 2003/04/09 05:20:48 starvik
- * Merge of Linux 2.5.67
- *
- * Revision 1.7 2003/01/22 06:48:38 starvik
- * Fixed warnings issued by GCC 3.2.1
- *
- * Revision 1.6 2002/12/11 14:44:48 starvik
- * Extracted v10 (ETRAX 100LX) specific stuff to arch/cris/arch-v10/mm
- *
- * Revision 1.5 2002/11/18 07:37:37 starvik
- * Added cache bug workaround (from Linux 2.4)
- *
- * Revision 1.4 2002/11/13 15:40:24 starvik
- * Removed the page table cache stuff (as done in other archs)
- *
- * Revision 1.3 2002/11/05 06:45:13 starvik
- * Merge of Linux 2.5.45
- *
- * Revision 1.2 2001/12/18 13:35:22 bjornw
- * Applied the 2.4.13->2.4.16 CRIS patch to 2.5.1 (is a copy of 2.4.15).
- *
- * Revision 1.31 2001/11/13 16:22:00 bjornw
- * Skip calculating totalram and sharedram in si_meminfo
- *
- * Revision 1.30 2001/11/12 19:02:10 pkj
- * Fixed compiler warnings.
- *
- * Revision 1.29 2001/07/25 16:09:50 bjornw
- * val->sharedram will stay 0
- *
- * Revision 1.28 2001/06/28 16:30:17 bjornw
- * Oops. This needs to wait until 2.4.6 is merged
- *
- * Revision 1.27 2001/06/28 14:04:07 bjornw
- * Fill in sharedram
- *
- * Revision 1.26 2001/06/18 06:36:02 hp
- * Enable free_initmem of __init-type pages
- *
- * Revision 1.25 2001/06/13 00:02:23 bjornw
- * Use a separate variable to store the current pgd to avoid races in schedule
- *
- * Revision 1.24 2001/05/15 00:52:20 hp
- * Only map segment 0xa as seg if CONFIG_JULIETTE
- *
- * Revision 1.23 2001/04/04 14:35:40 bjornw
- * * Removed get_pte_slow and friends (2.4.3 change)
- * * Removed bad_pmd handling (2.4.3 change)
- *
- * Revision 1.22 2001/04/04 13:38:04 matsfg
- * Moved ioremap to a separate function instead
- *
- * Revision 1.21 2001/03/27 09:28:33 bjornw
- * ioremap used too early - lets try it in mem_init instead
- *
- * Revision 1.20 2001/03/23 07:39:21 starvik
- * Corrected according to review remarks
- *
- * Revision 1.19 2001/03/15 14:25:17 bjornw
- * More general shadow registers and ioremaped addresses for external I/O
- *
- * Revision 1.18 2001/02/23 12:46:44 bjornw
- * * 0xc was not CSE1; 0x8 is, same as uncached flash, so we move the uncached
- * flash during CRIS_LOW_MAP from 0xe to 0x8 so both the flash and the I/O
- * is mapped straight over (for !CRIS_LOW_MAP the uncached flash is still 0xe)
- *
- * Revision 1.17 2001/02/22 15:05:21 bjornw
- * Map 0x9 straight over during LOW_MAP to allow for memory mapped LEDs
- *
- * Revision 1.16 2001/02/22 15:02:35 bjornw
- * Map 0xc straight over during LOW_MAP to allow for memory mapped I/O
- *
- * Revision 1.15 2001/01/10 21:12:10 bjornw
- * loops_per_sec -> loops_per_jiffy
- *
- * Revision 1.14 2000/11/22 16:23:20 bjornw
- * Initialize totalhigh counters to 0 to make /proc/meminfo look nice.
- *
- * Revision 1.13 2000/11/21 16:37:51 bjornw
- * Temporarily disable initmem freeing
- *
- * Revision 1.12 2000/11/21 13:55:07 bjornw
- * Use CONFIG_CRIS_LOW_MAP for the low VM map instead of explicit CPU type
- *
- * Revision 1.11 2000/10/06 12:38:22 bjornw
- * Cast empty_bad_page correctly (should really be of * type from the start..
- *
- * Revision 1.10 2000/10/04 16:53:57 bjornw
- * Fix memory-map due to LX features
- *
- * Revision 1.9 2000/09/13 15:47:49 bjornw
- * Wrong count in reserved-pages loop
- *
- * Revision 1.8 2000/09/13 14:35:10 bjornw
- * 2.4.0-test8 added a new arg to free_area_init_node
- *
- * Revision 1.7 2000/08/17 15:35:55 bjornw
- * 2.4.0-test6 removed MAP_NR and inserted virt_to_page
- *
- *
*/
+#include <linux/gfp.h>
#include <linux/init.h>
#include <linux/bootmem.h>
#include <asm/tlb.h>
-
-DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
+#include <asm/sections.h>
unsigned long empty_zero_page;
-extern char _stext, _edata, _etext; /* From linkerscript */
-extern char __init_begin, __init_end;
-
-void
-show_mem(void)
-{
- int i,free = 0,total = 0,cached = 0, reserved = 0, nonshared = 0;
- int shared = 0;
-
- printk("\nMem-info:\n");
- show_free_areas();
- printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
- i = max_mapnr;
- while (i-- > 0) {
- total++;
- if (PageReserved(mem_map+i))
- reserved++;
- else if (PageSwapCache(mem_map+i))
- cached++;
- else if (!page_count(mem_map+i))
- free++;
- else if (page_count(mem_map+i) == 1)
- nonshared++;
- else
- shared += page_count(mem_map+i) - 1;
- }
- printk("%d pages of RAM\n",total);
- printk("%d free pages\n",free);
- printk("%d reserved pages\n",reserved);
- printk("%d pages nonshared\n",nonshared);
- printk("%d pages shared\n",shared);
- printk("%d pages swap cached\n",cached);
-}
-
void __init
mem_init(void)
{
- int codesize, reservedpages, datasize, initsize;
- unsigned long tmp;
-
- if(!mem_map)
- BUG();
+ BUG_ON(!mem_map);
/* max/min_low_pfn was set by setup.c
* now we just copy it to some other necessary places...
*
* high_memory was also set in setup.c
*/
-
- max_mapnr = num_physpages = max_low_pfn - min_low_pfn;
-
- /* this will put all memory onto the freelists */
- totalram_pages = free_all_bootmem();
-
- reservedpages = 0;
- for (tmp = 0; tmp < max_mapnr; tmp++) {
- /*
- * Only count reserved RAM pages
- */
- if (PageReserved(mem_map + tmp))
- reservedpages++;
- }
-
- codesize = (unsigned long) &_etext - (unsigned long) &_stext;
- datasize = (unsigned long) &_edata - (unsigned long) &_etext;
- initsize = (unsigned long) &__init_end - (unsigned long) &__init_begin;
-
- printk(KERN_INFO
- "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, "
- "%dk init)\n" ,
- (unsigned long) nr_free_pages() << (PAGE_SHIFT-10),
- max_mapnr << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- initsize >> 10
- );
+ max_mapnr = max_low_pfn - min_low_pfn;
+ free_all_bootmem();
+ mem_init_print_info(NULL);
}
/* free the pages occupied by initialization code */
@@ -211,15 +36,5 @@ mem_init(void)
void
free_initmem(void)
{
- unsigned long addr;
-
- addr = (unsigned long)(&__init_begin);
- for (; addr < (unsigned long)(&__init_end); addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- init_page_count(virt_to_page(addr));
- free_page(addr);
- totalram_pages++;
- }
- printk (KERN_INFO "Freeing unused kernel memory: %luk freed\n",
- (unsigned long)((&__init_end - &__init_begin) >> 10));
+ free_initmem_default(-1);
}
diff --git a/arch/cris/mm/ioremap.c b/arch/cris/mm/ioremap.c
index 1780df3ed9e..f9ca44bdea2 100644
--- a/arch/cris/mm/ioremap.c
+++ b/arch/cris/mm/ioremap.c
@@ -10,92 +10,9 @@
*/
#include <linux/vmalloc.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <asm/pgalloc.h>
-#include <asm/cacheflush.h>
-#include <asm/tlbflush.h>
-#include <asm/arch/memmap.h>
-
-static inline void remap_area_pte(pte_t * pte, unsigned long address, unsigned long size,
- unsigned long phys_addr, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PMD_MASK;
- end = address + size;
- if (end > PMD_SIZE)
- end = PMD_SIZE;
- if (address >= end)
- BUG();
- do {
- if (!pte_none(*pte)) {
- printk("remap_area_pte: page already exists\n");
- BUG();
- }
- set_pte(pte, mk_pte_phys(phys_addr, prot));
- address += PAGE_SIZE;
- phys_addr += PAGE_SIZE;
- pte++;
- } while (address && (address < end));
-}
-
-static inline int remap_area_pmd(pmd_t * pmd, unsigned long address, unsigned long size,
- unsigned long phys_addr, pgprot_t prot)
-{
- unsigned long end;
-
- address &= ~PGDIR_MASK;
- end = address + size;
- if (end > PGDIR_SIZE)
- end = PGDIR_SIZE;
- phys_addr -= address;
- if (address >= end)
- BUG();
- do {
- pte_t * pte = pte_alloc_kernel(pmd, address);
- if (!pte)
- return -ENOMEM;
- remap_area_pte(pte, address, end - address, address + phys_addr, prot);
- address = (address + PMD_SIZE) & PMD_MASK;
- pmd++;
- } while (address && (address < end));
- return 0;
-}
-
-static int remap_area_pages(unsigned long address, unsigned long phys_addr,
- unsigned long size, pgprot_t prot)
-{
- int error;
- pgd_t * dir;
- unsigned long end = address + size;
-
- phys_addr -= address;
- dir = pgd_offset(&init_mm, address);
- flush_cache_all();
- if (address >= end)
- BUG();
- do {
- pud_t *pud;
- pmd_t *pmd;
-
- error = -ENOMEM;
- pud = pud_alloc(&init_mm, dir, address);
- if (!pud)
- break;
- pmd = pmd_alloc(&init_mm, pud, address);
-
- if (!pmd)
- break;
- if (remap_area_pmd(pmd, address, end - address,
- phys_addr + address, prot))
- break;
- error = 0;
- address = (address + PGDIR_SIZE) & PGDIR_MASK;
- dir++;
- } while (address && (address < end));
- flush_tlb_all();
- return error;
-}
+#include <arch/memmap.h>
/*
* Generic mapping function (not visible outside):
@@ -135,7 +52,8 @@ void __iomem * __ioremap_prot(unsigned long phys_addr, unsigned long size, pgpro
if (!area)
return NULL;
addr = (void __iomem *)area->addr;
- if (remap_area_pages((unsigned long) addr, phys_addr, size, prot)) {
+ if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size,
+ phys_addr, prot)) {
vfree((void __force *)addr);
return NULL;
}
diff --git a/arch/cris/mm/tlb.c b/arch/cris/mm/tlb.c
index 0df390a656c..b7f8de57677 100644
--- a/arch/cris/mm/tlb.c
+++ b/arch/cris/mm/tlb.c
@@ -8,6 +8,7 @@
*/
#include <linux/init.h>
+#include <linux/kernel.h>
#include <asm/tlb.h>
#define D(x)
@@ -15,7 +16,7 @@
/* The TLB can host up to 64 different mm contexts at the same time.
* The running context is R_MMU_CONTEXT, and each TLB entry contains a
* page_id that has to match to give a hit. In page_id_map, we keep track
- * of which mm's we have assigned which page_id's, so that we know when
+ * of which mm we have assigned to which page_id, so that we know when
* to invalidate TLB entries.
*
* The last page_id is never running - it is used as an invalid page_id
@@ -100,7 +101,7 @@ tlb_init(void)
/* clear the page_id map */
- for (i = 1; i < sizeof (page_id_map) / sizeof (page_id_map[0]); i++)
+ for (i = 1; i < ARRAY_SIZE(page_id_map); i++)
page_id_map[i] = NULL;
/* invalidate the entire TLB */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-07 21:43:29 +0000