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-rw-r--r--arch/mips/mm/c-r4k.c22
-rw-r--r--arch/mips/mm/fault.c4
-rw-r--r--arch/mips/mm/init.c42
-rw-r--r--arch/mips/mm/pgtable-64.c3
-rw-r--r--arch/mips/mm/tlbex.c55
5 files changed, 92 insertions, 34 deletions
diff --git a/arch/mips/mm/c-r4k.c b/arch/mips/mm/c-r4k.c
index cc895dad71d..df04a315d83 100644
--- a/arch/mips/mm/c-r4k.c
+++ b/arch/mips/mm/c-r4k.c
@@ -323,7 +323,6 @@ static void __init r4k_blast_scache_setup(void)
static inline void local_r4k_flush_cache_all(void * args)
{
r4k_blast_dcache();
- r4k_blast_icache();
}
static void r4k_flush_cache_all(void)
@@ -359,21 +358,19 @@ static void r4k___flush_cache_all(void)
static inline void local_r4k_flush_cache_range(void * args)
{
struct vm_area_struct *vma = args;
- int exec;
if (!(cpu_context(smp_processor_id(), vma->vm_mm)))
return;
- exec = vma->vm_flags & VM_EXEC;
- if (cpu_has_dc_aliases || exec)
- r4k_blast_dcache();
- if (exec)
- r4k_blast_icache();
+ r4k_blast_dcache();
}
static void r4k_flush_cache_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
+ if (!cpu_has_dc_aliases)
+ return;
+
r4k_on_each_cpu(local_r4k_flush_cache_range, vma, 1, 1);
}
@@ -384,18 +381,21 @@ static inline void local_r4k_flush_cache_mm(void * args)
if (!cpu_context(smp_processor_id(), mm))
return;
- r4k_blast_dcache();
- r4k_blast_icache();
-
/*
* Kludge alert. For obscure reasons R4000SC and R4400SC go nuts if we
* only flush the primary caches but R10000 and R12000 behave sane ...
+ * R4000SC and R4400SC indexed S-cache ops also invalidate primary
+ * caches, so we can bail out early.
*/
if (current_cpu_data.cputype == CPU_R4000SC ||
current_cpu_data.cputype == CPU_R4000MC ||
current_cpu_data.cputype == CPU_R4400SC ||
- current_cpu_data.cputype == CPU_R4400MC)
+ current_cpu_data.cputype == CPU_R4400MC) {
r4k_blast_scache();
+ return;
+ }
+
+ r4k_blast_dcache();
}
static void r4k_flush_cache_mm(struct mm_struct *mm)
diff --git a/arch/mips/mm/fault.c b/arch/mips/mm/fault.c
index 8423d859077..6f90e7ef66a 100644
--- a/arch/mips/mm/fault.c
+++ b/arch/mips/mm/fault.c
@@ -60,6 +60,10 @@ asmlinkage void do_page_fault(struct pt_regs *regs, unsigned long write,
*/
if (unlikely(address >= VMALLOC_START && address <= VMALLOC_END))
goto vmalloc_fault;
+#ifdef MODULE_START
+ if (unlikely(address >= MODULE_START && address < MODULE_END))
+ goto vmalloc_fault;
+#endif
/*
* If we're in an interrupt or have no user
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 2de4d3c367a..9e29ba9205f 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -90,9 +90,9 @@ unsigned long setup_zero_pages(void)
if (!empty_zero_page)
panic("Oh boy, that early out of memory?");
- page = virt_to_page(empty_zero_page);
+ page = virt_to_page((void *)empty_zero_page);
split_page(page, order);
- while (page < virt_to_page(empty_zero_page + (PAGE_SIZE << order))) {
+ while (page < virt_to_page((void *)(empty_zero_page + (PAGE_SIZE << order)))) {
SetPageReserved(page);
page++;
}
@@ -443,15 +443,18 @@ void __init mem_init(void)
}
#endif /* !CONFIG_NEED_MULTIPLE_NODES */
-void free_init_pages(char *what, unsigned long begin, unsigned long end)
+static void free_init_pages(char *what, unsigned long begin, unsigned long end)
{
- unsigned long addr;
+ unsigned long pfn;
- for (addr = begin; addr < end; addr += PAGE_SIZE) {
- ClearPageReserved(virt_to_page(addr));
- init_page_count(virt_to_page(addr));
- memset((void *)addr, 0xcc, PAGE_SIZE);
- free_page(addr);
+ for (pfn = PFN_UP(begin); pfn < PFN_DOWN(end); pfn++) {
+ struct page *page = pfn_to_page(pfn);
+ void *addr = phys_to_virt(PFN_PHYS(pfn));
+
+ ClearPageReserved(page);
+ init_page_count(page);
+ memset(addr, POISON_FREE_INITMEM, PAGE_SIZE);
+ __free_page(page);
totalram_pages++;
}
printk(KERN_INFO "Freeing %s: %ldk freed\n", what, (end - begin) >> 10);
@@ -460,12 +463,9 @@ void free_init_pages(char *what, unsigned long begin, unsigned long end)
#ifdef CONFIG_BLK_DEV_INITRD
void free_initrd_mem(unsigned long start, unsigned long end)
{
-#ifdef CONFIG_64BIT
- /* Switch from KSEG0 to XKPHYS addresses */
- start = (unsigned long)phys_to_virt(CPHYSADDR(start));
- end = (unsigned long)phys_to_virt(CPHYSADDR(end));
-#endif
- free_init_pages("initrd memory", start, end);
+ free_init_pages("initrd memory",
+ virt_to_phys((void *)start),
+ virt_to_phys((void *)end));
}
#endif
@@ -473,17 +473,13 @@ extern unsigned long prom_free_prom_memory(void);
void free_initmem(void)
{
- unsigned long start, end, freed;
+ unsigned long freed;
freed = prom_free_prom_memory();
if (freed)
printk(KERN_INFO "Freeing firmware memory: %ldk freed\n",freed);
- start = (unsigned long)(&__init_begin);
- end = (unsigned long)(&__init_end);
-#ifdef CONFIG_64BIT
- start = PAGE_OFFSET | CPHYSADDR(start);
- end = PAGE_OFFSET | CPHYSADDR(end);
-#endif
- free_init_pages("unused kernel memory", start, end);
+ free_init_pages("unused kernel memory",
+ __pa_symbol(&__init_begin),
+ __pa_symbol(&__init_end));
}
diff --git a/arch/mips/mm/pgtable-64.c b/arch/mips/mm/pgtable-64.c
index 8d600d307d5..c46eb651bf0 100644
--- a/arch/mips/mm/pgtable-64.c
+++ b/arch/mips/mm/pgtable-64.c
@@ -58,6 +58,9 @@ void __init pagetable_init(void)
/* Initialize the entire pgd. */
pgd_init((unsigned long)swapper_pg_dir);
+#ifdef MODULE_START
+ pgd_init((unsigned long)module_pg_dir);
+#endif
pmd_init((unsigned long)invalid_pmd_table, (unsigned long)invalid_pte_table);
pgd_base = swapper_pg_dir;
diff --git a/arch/mips/mm/tlbex.c b/arch/mips/mm/tlbex.c
index fec318a1c8c..492c518e7ba 100644
--- a/arch/mips/mm/tlbex.c
+++ b/arch/mips/mm/tlbex.c
@@ -423,6 +423,9 @@ enum label_id {
label_invalid,
label_second_part,
label_leave,
+#ifdef MODULE_START
+ label_module_alloc,
+#endif
label_vmalloc,
label_vmalloc_done,
label_tlbw_hazard,
@@ -455,6 +458,9 @@ static __init void build_label(struct label **lab, u32 *addr,
L_LA(_second_part)
L_LA(_leave)
+#ifdef MODULE_START
+L_LA(_module_alloc)
+#endif
L_LA(_vmalloc)
L_LA(_vmalloc_done)
L_LA(_tlbw_hazard)
@@ -686,6 +692,13 @@ static void __init il_bgezl(u32 **p, struct reloc **r, unsigned int reg,
i_bgezl(p, reg, 0);
}
+static void __init __attribute__((unused))
+il_bgez(u32 **p, struct reloc **r, unsigned int reg, enum label_id l)
+{
+ r_mips_pc16(r, *p, l);
+ i_bgez(p, reg, 0);
+}
+
/* The only general purpose registers allowed in TLB handlers. */
#define K0 26
#define K1 27
@@ -970,7 +983,11 @@ build_get_pmde64(u32 **p, struct label **l, struct reloc **r,
* The vmalloc handling is not in the hotpath.
*/
i_dmfc0(p, tmp, C0_BADVADDR);
+#ifdef MODULE_START
+ il_bltz(p, r, tmp, label_module_alloc);
+#else
il_bltz(p, r, tmp, label_vmalloc);
+#endif
/* No i_nop needed here, since the next insn doesn't touch TMP. */
#ifdef CONFIG_SMP
@@ -1023,8 +1040,46 @@ build_get_pgd_vmalloc64(u32 **p, struct label **l, struct reloc **r,
{
long swpd = (long)swapper_pg_dir;
+#ifdef MODULE_START
+ long modd = (long)module_pg_dir;
+
+ l_module_alloc(l, *p);
+ /*
+ * Assumption:
+ * VMALLOC_START >= 0xc000000000000000UL
+ * MODULE_START >= 0xe000000000000000UL
+ */
+ i_SLL(p, ptr, bvaddr, 2);
+ il_bgez(p, r, ptr, label_vmalloc);
+
+ if (in_compat_space_p(MODULE_START) && !rel_lo(MODULE_START)) {
+ i_lui(p, ptr, rel_hi(MODULE_START)); /* delay slot */
+ } else {
+ /* unlikely configuration */
+ i_nop(p); /* delay slot */
+ i_LA(p, ptr, MODULE_START);
+ }
+ i_dsubu(p, bvaddr, bvaddr, ptr);
+
+ if (in_compat_space_p(modd) && !rel_lo(modd)) {
+ il_b(p, r, label_vmalloc_done);
+ i_lui(p, ptr, rel_hi(modd));
+ } else {
+ i_LA_mostly(p, ptr, modd);
+ il_b(p, r, label_vmalloc_done);
+ i_daddiu(p, ptr, ptr, rel_lo(modd));
+ }
+
+ l_vmalloc(l, *p);
+ if (in_compat_space_p(MODULE_START) && !rel_lo(MODULE_START) &&
+ MODULE_START << 32 == VMALLOC_START)
+ i_dsll32(p, ptr, ptr, 0); /* typical case */
+ else
+ i_LA(p, ptr, VMALLOC_START);
+#else
l_vmalloc(l, *p);
i_LA(p, ptr, VMALLOC_START);
+#endif
i_dsubu(p, bvaddr, bvaddr, ptr);
if (in_compat_space_p(swpd) && !rel_lo(swpd)) {
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-22 16:24:49 +0000