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-rw-r--r--arch/microblaze/mm/consistent.c16
-rw-r--r--arch/microblaze/mm/fault.c18
-rw-r--r--arch/microblaze/mm/highmem.c2
-rw-r--r--arch/microblaze/mm/init.c117
-rw-r--r--arch/microblaze/mm/pgtable.c22
5 files changed, 54 insertions, 121 deletions
diff --git a/arch/microblaze/mm/consistent.c b/arch/microblaze/mm/consistent.c
index a1e2e18e096..e10ad930895 100644
--- a/arch/microblaze/mm/consistent.c
+++ b/arch/microblaze/mm/consistent.c
@@ -13,7 +13,7 @@
* published by the Free Software Foundation.
*/
-#include <linux/module.h>
+#include <linux/export.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/kernel.h>
@@ -37,7 +37,7 @@
#include <asm/pgalloc.h>
#include <linux/io.h>
#include <linux/hardirq.h>
-#include <asm/mmu_context.h>
+#include <linux/mmu_context.h>
#include <asm/mmu.h>
#include <linux/uaccess.h>
#include <asm/pgtable.h>
@@ -102,8 +102,7 @@ void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle)
# endif
if ((unsigned int)ret > cpuinfo.dcache_base &&
(unsigned int)ret < cpuinfo.dcache_high)
- printk(KERN_WARNING
- "ERROR: Your cache coherent area is CACHED!!!\n");
+ pr_warn("ERROR: Your cache coherent area is CACHED!!!\n");
/* dma_handle is same as physical (shadowed) address */
*dma_handle = (dma_addr_t)ret;
@@ -118,7 +117,7 @@ void *consistent_alloc(gfp_t gfp, size_t size, dma_addr_t *dma_handle)
ret = (void *)va;
/* This gives us the real physical address of the first page. */
- *dma_handle = pa = virt_to_bus((void *)vaddr);
+ *dma_handle = pa = __virt_to_phys(vaddr);
#endif
/*
@@ -177,8 +176,7 @@ void consistent_free(size_t size, void *vaddr)
page = virt_to_page(vaddr);
do {
- ClearPageReserved(page);
- __free_page(page);
+ __free_reserved_page(page);
page++;
} while (size -= PAGE_SIZE);
#else
@@ -195,9 +193,7 @@ void consistent_free(size_t size, void *vaddr)
pte_clear(&init_mm, (unsigned int)vaddr, ptep);
if (pfn_valid(pfn)) {
page = pfn_to_page(pfn);
-
- ClearPageReserved(page);
- __free_page(page);
+ __free_reserved_page(page);
}
}
vaddr += PAGE_SIZE;
diff --git a/arch/microblaze/mm/fault.c b/arch/microblaze/mm/fault.c
index eb365d6795f..fa4cf52aa7a 100644
--- a/arch/microblaze/mm/fault.c
+++ b/arch/microblaze/mm/fault.c
@@ -32,7 +32,7 @@
#include <asm/page.h>
#include <asm/pgtable.h>
#include <asm/mmu.h>
-#include <asm/mmu_context.h>
+#include <linux/mmu_context.h>
#include <linux/uaccess.h>
#include <asm/exceptions.h>
@@ -92,15 +92,14 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
int code = SEGV_MAPERR;
int is_write = error_code & ESR_S;
int fault;
- unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE |
- (is_write ? FAULT_FLAG_WRITE : 0);
+ unsigned int flags = FAULT_FLAG_ALLOW_RETRY | FAULT_FLAG_KILLABLE;
regs->ear = address;
regs->esr = error_code;
/* On a kernel SLB miss we can only check for a valid exception entry */
if (unlikely(kernel_mode(regs) && (address >= TASK_SIZE))) {
- printk(KERN_WARNING "kernel task_size exceed");
+ pr_warn("kernel task_size exceed");
_exception(SIGSEGV, regs, code, address);
}
@@ -114,13 +113,16 @@ void do_page_fault(struct pt_regs *regs, unsigned long address,
/* in_atomic() in user mode is really bad,
as is current->mm == NULL. */
- printk(KERN_EMERG "Page fault in user mode with "
- "in_atomic(), mm = %p\n", mm);
- printk(KERN_EMERG "r15 = %lx MSR = %lx\n",
+ pr_emerg("Page fault in user mode with in_atomic(), mm = %p\n",
+ mm);
+ pr_emerg("r15 = %lx MSR = %lx\n",
regs->r15, regs->msr);
die("Weird page fault", regs, SIGSEGV);
}
+ if (user_mode(regs))
+ flags |= FAULT_FLAG_USER;
+
/* When running in the kernel we expect faults to occur only to
* addresses in user space. All other faults represent errors in the
* kernel and should generate an OOPS. Unfortunately, in the case of an
@@ -199,6 +201,7 @@ good_area:
if (unlikely(is_write)) {
if (unlikely(!(vma->vm_flags & VM_WRITE)))
goto bad_area;
+ flags |= FAULT_FLAG_WRITE;
/* a read */
} else {
/* protection fault */
@@ -233,6 +236,7 @@ good_area:
current->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
diff --git a/arch/microblaze/mm/highmem.c b/arch/microblaze/mm/highmem.c
index 7d78838e8bf..5a92576fad9 100644
--- a/arch/microblaze/mm/highmem.c
+++ b/arch/microblaze/mm/highmem.c
@@ -20,8 +20,8 @@
* highmem.h by Benjamin Herrenschmidt (c) 2009 IBM Corp.
*/
+#include <linux/export.h>
#include <linux/highmem.h>
-#include <linux/module.h>
/*
* The use of kmap_atomic/kunmap_atomic is discouraged - kmap/kunmap
diff --git a/arch/microblaze/mm/init.c b/arch/microblaze/mm/init.c
index ce80823051b..77bc7c7e652 100644
--- a/arch/microblaze/mm/init.c
+++ b/arch/microblaze/mm/init.c
@@ -71,28 +71,17 @@ static void __init highmem_init(void)
kmap_prot = PAGE_KERNEL;
}
-static unsigned long highmem_setup(void)
+static void highmem_setup(void)
{
unsigned long pfn;
- unsigned long reservedpages = 0;
for (pfn = max_low_pfn; pfn < max_pfn; ++pfn) {
struct page *page = pfn_to_page(pfn);
/* FIXME not sure about */
- if (memblock_is_reserved(pfn << PAGE_SHIFT))
- continue;
- ClearPageReserved(page);
- init_page_count(page);
- __free_page(page);
- totalhigh_pages++;
- reservedpages++;
+ if (!memblock_is_reserved(pfn << PAGE_SHIFT))
+ free_highmem_page(page);
}
- totalram_pages += totalhigh_pages;
- printk(KERN_INFO "High memory: %luk\n",
- totalhigh_pages << (PAGE_SHIFT-10));
-
- return reservedpages;
}
#endif /* CONFIG_HIGHMEM */
@@ -142,8 +131,8 @@ void __init setup_memory(void)
((u32)_text <= (memory_start + lowmem_size - 1))) {
memory_size = lowmem_size;
PAGE_OFFSET = memory_start;
- printk(KERN_INFO "%s: Main mem: 0x%x, "
- "size 0x%08x\n", __func__, (u32) memory_start,
+ pr_info("%s: Main mem: 0x%x, size 0x%08x\n",
+ __func__, (u32) memory_start,
(u32) memory_size);
break;
}
@@ -158,7 +147,7 @@ void __init setup_memory(void)
kernel_align_start = PAGE_DOWN((u32)_text);
/* ALIGN can be remove because _end in vmlinux.lds.S is align */
kernel_align_size = PAGE_UP((u32)klimit) - kernel_align_start;
- printk(KERN_INFO "%s: kernel addr:0x%08x-0x%08x size=0x%08x\n",
+ pr_info("%s: kernel addr:0x%08x-0x%08x size=0x%08x\n",
__func__, kernel_align_start, kernel_align_start
+ kernel_align_size, kernel_align_size);
memblock_reserve(kernel_align_start, kernel_align_size);
@@ -171,20 +160,19 @@ void __init setup_memory(void)
* min_low_pfn - the first page (mm/bootmem.c - node_boot_start)
* max_low_pfn
* max_mapnr - the first unused page (mm/bootmem.c - node_low_pfn)
- * num_physpages - number of all pages
*/
/* memory start is from the kernel end (aligned) to higher addr */
min_low_pfn = memory_start >> PAGE_SHIFT; /* minimum for allocation */
/* RAM is assumed contiguous */
- num_physpages = max_mapnr = memory_size >> PAGE_SHIFT;
+ max_mapnr = memory_size >> PAGE_SHIFT;
max_low_pfn = ((u64)memory_start + (u64)lowmem_size) >> PAGE_SHIFT;
max_pfn = ((u64)memory_start + (u64)memory_size) >> PAGE_SHIFT;
- printk(KERN_INFO "%s: max_mapnr: %#lx\n", __func__, max_mapnr);
- printk(KERN_INFO "%s: min_low_pfn: %#lx\n", __func__, min_low_pfn);
- printk(KERN_INFO "%s: max_low_pfn: %#lx\n", __func__, max_low_pfn);
- printk(KERN_INFO "%s: max_pfn: %#lx\n", __func__, max_pfn);
+ pr_info("%s: max_mapnr: %#lx\n", __func__, max_mapnr);
+ pr_info("%s: min_low_pfn: %#lx\n", __func__, min_low_pfn);
+ pr_info("%s: max_low_pfn: %#lx\n", __func__, max_low_pfn);
+ pr_info("%s: max_pfn: %#lx\n", __func__, max_pfn);
/*
* Find an area to use for the bootmem bitmap.
@@ -204,7 +192,8 @@ void __init setup_memory(void)
start_pfn = memblock_region_memory_base_pfn(reg);
end_pfn = memblock_region_memory_end_pfn(reg);
memblock_set_node(start_pfn << PAGE_SHIFT,
- (end_pfn - start_pfn) << PAGE_SHIFT, 0);
+ (end_pfn - start_pfn) << PAGE_SHIFT,
+ &memblock.memory, 0);
}
/* free bootmem is whole main memory */
@@ -236,84 +225,29 @@ void __init setup_memory(void)
paging_init();
}
-void free_init_pages(char *what, unsigned long begin, unsigned long end)
-{
- unsigned long addr;
-
- for (addr = begin; addr < 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 %s: %ldk freed\n", what, (end - begin) >> 10);
-}
-
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
- int pages = 0;
- for (; start < end; start += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(start));
- init_page_count(virt_to_page(start));
- free_page(start);
- totalram_pages++;
- pages++;
- }
- printk(KERN_NOTICE "Freeing initrd memory: %dk freed\n",
- (int)(pages * (PAGE_SIZE / 1024)));
+ free_reserved_area((void *)start, (void *)end, -1, "initrd");
}
#endif
void free_initmem(void)
{
- free_init_pages("unused kernel memory",
- (unsigned long)(&__init_begin),
- (unsigned long)(&__init_end));
+ free_initmem_default(-1);
}
void __init mem_init(void)
{
- pg_data_t *pgdat;
- unsigned long reservedpages = 0, codesize, initsize, datasize, bsssize;
-
high_memory = (void *)__va(memory_start + lowmem_size - 1);
/* this will put all memory onto the freelists */
- totalram_pages += free_all_bootmem();
-
- for_each_online_pgdat(pgdat) {
- unsigned long i;
- struct page *page;
-
- for (i = 0; i < pgdat->node_spanned_pages; i++) {
- if (!pfn_valid(pgdat->node_start_pfn + i))
- continue;
- page = pgdat_page_nr(pgdat, i);
- if (PageReserved(page))
- reservedpages++;
- }
- }
-
+ free_all_bootmem();
#ifdef CONFIG_HIGHMEM
- reservedpages -= highmem_setup();
+ highmem_setup();
#endif
- codesize = (unsigned long)&_sdata - (unsigned long)&_stext;
- datasize = (unsigned long)&_edata - (unsigned long)&_sdata;
- initsize = (unsigned long)&__init_end - (unsigned long)&__init_begin;
- bsssize = (unsigned long)&__bss_stop - (unsigned long)&__bss_start;
-
- pr_info("Memory: %luk/%luk available (%luk kernel code, "
- "%luk reserved, %luk data, %luk bss, %luk init)\n",
- nr_free_pages() << (PAGE_SHIFT-10),
- num_physpages << (PAGE_SHIFT-10),
- codesize >> 10,
- reservedpages << (PAGE_SHIFT-10),
- datasize >> 10,
- bsssize >> 10,
- initsize >> 10);
-
+ mem_init_print_info(NULL);
#ifdef CONFIG_MMU
pr_info("Kernel virtual memory layout:\n");
pr_info(" * 0x%08lx..0x%08lx : fixmap\n", FIXADDR_START, FIXADDR_TOP);
@@ -394,17 +328,17 @@ asmlinkage void __init mmu_init(void)
unsigned int kstart, ksize;
if (!memblock.reserved.cnt) {
- printk(KERN_EMERG "Error memory count\n");
+ pr_emerg("Error memory count\n");
machine_restart(NULL);
}
if ((u32) memblock.memory.regions[0].size < 0x400000) {
- printk(KERN_EMERG "Memory must be greater than 4MB\n");
+ pr_emerg("Memory must be greater than 4MB\n");
machine_restart(NULL);
}
if ((u32) memblock.memory.regions[0].size < kernel_tlb) {
- printk(KERN_EMERG "Kernel size is greater than memory node\n");
+ pr_emerg("Kernel size is greater than memory node\n");
machine_restart(NULL);
}
@@ -432,10 +366,11 @@ asmlinkage void __init mmu_init(void)
#if defined(CONFIG_BLK_DEV_INITRD)
/* Remove the init RAM disk from the available memory. */
-/* if (initrd_start) {
- mem_pieces_remove(&phys_avail, __pa(initrd_start),
- initrd_end - initrd_start, 1);
- }*/
+ if (initrd_start) {
+ unsigned long size;
+ size = initrd_end - initrd_start;
+ memblock_reserve(__virt_to_phys(initrd_start), size);
+ }
#endif /* CONFIG_BLK_DEV_INITRD */
/* Initialize the MMU hardware */
diff --git a/arch/microblaze/mm/pgtable.c b/arch/microblaze/mm/pgtable.c
index d1c06d07fed..4f4520e779a 100644
--- a/arch/microblaze/mm/pgtable.c
+++ b/arch/microblaze/mm/pgtable.c
@@ -26,8 +26,8 @@
*
*/
+#include <linux/export.h>
#include <linux/kernel.h>
-#include <linux/module.h>
#include <linux/types.h>
#include <linux/vmalloc.h>
#include <linux/init.h>
@@ -39,8 +39,6 @@
#include <asm/sections.h>
#include <asm/fixmap.h>
-#define flush_HPTE(X, va, pg) _tlbie(va)
-
unsigned long ioremap_base;
unsigned long ioremap_bot;
EXPORT_SYMBOL(ioremap_bot);
@@ -71,13 +69,13 @@ static void __iomem *__ioremap(phys_addr_t addr, unsigned long size,
*
* However, allow remap of rootfs: TBD
*/
+
if (mem_init_done &&
p >= memory_start && p < virt_to_phys(high_memory) &&
- !(p >= virt_to_phys((unsigned long)&__bss_stop) &&
- p < virt_to_phys((unsigned long)__bss_stop))) {
- printk(KERN_WARNING "__ioremap(): phys addr "PTE_FMT
- " is RAM lr %pf\n", (unsigned long)p,
- __builtin_return_address(0));
+ !(p >= __virt_to_phys((phys_addr_t)__bss_stop) &&
+ p < __virt_to_phys((phys_addr_t)__bss_stop))) {
+ pr_warn("__ioremap(): phys addr "PTE_FMT" is RAM lr %pf\n",
+ (unsigned long)p, __builtin_return_address(0));
return NULL;
}
@@ -128,9 +126,10 @@ void __iomem *ioremap(phys_addr_t addr, unsigned long size)
}
EXPORT_SYMBOL(ioremap);
-void iounmap(void *addr)
+void iounmap(void __iomem *addr)
{
- if (addr > high_memory && (unsigned long) addr < ioremap_bot)
+ if ((__force void *)addr > high_memory &&
+ (unsigned long) addr < ioremap_bot)
vfree((void *) (PAGE_MASK & (unsigned long) addr));
}
EXPORT_SYMBOL(iounmap);
@@ -152,8 +151,7 @@ int map_page(unsigned long va, phys_addr_t pa, int flags)
set_pte_at(&init_mm, va, pg, pfn_pte(pa >> PAGE_SHIFT,
__pgprot(flags)));
if (unlikely(mem_init_done))
- flush_HPTE(0, va, pmd_val(*pd));
- /* flush_HPTE(0, va, pg); */
+ _tlbie(va);
}
return err;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 15:27:20 +0000