#ifdef CONFIG_DEBUG_HIGHMEM
BUG_ON(!pte_none(*(kmap_pte-idx)));
#endif
- set_pte_at(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot));
+ __set_pte_at(&init_mm, vaddr, kmap_pte-idx, mk_pte(page, prot));
flush_tlb_page(NULL, vaddr);
return (void*) vaddr;
/*
* Change "struct page" to physical address.
*/
-#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
+#define page_to_phys(page) ((phys_addr_t)page_to_pfn(page) << PAGE_SHIFT)
/* We do NOT want virtual merging, it would put too much pressure on
* our iommu allocator. Instead, we want drivers to be smart enough
#define ARCH_KMALLOC_MINALIGN L1_CACHE_BYTES
#endif
+#ifdef CONFIG_PTE_64BIT
+#define PTE_FLAGS_OFFSET 4 /* offset of PTE flags, in bytes */
+#else
+#define PTE_FLAGS_OFFSET 0
+#endif
+
#ifndef __ASSEMBLY__
/*
* The basic type of a PTE - 64 bits for those CPUs with > 32 bit
- * physical addressing. For now this just the IBM PPC440.
+ * physical addressing.
*/
#ifdef CONFIG_PTE_64BIT
typedef unsigned long long pte_basic_t;
#define _PAGE_HWEXEC 0x00000004 /* H: Execute permission */
#define _PAGE_ACCESSED 0x00000008 /* S: Page referenced */
#define _PAGE_DIRTY 0x00000010 /* S: Page dirty */
+#define _PAGE_SPECIAL 0x00000020 /* S: Special page */
#define _PAGE_USER 0x00000040 /* S: User page */
#define _PAGE_ENDIAN 0x00000080 /* H: E bit */
#define _PAGE_GUARDED 0x00000100 /* H: G bit */
/* ERPN in a PTE never gets cleared, ignore it */
#define _PTE_NONE_MASK 0xffffffff00000000ULL
+#define __HAVE_ARCH_PTE_SPECIAL
#elif defined(CONFIG_FSL_BOOKE)
/*
#define _PAGE_COHERENT 0x00100 /* H: M bit */
#define _PAGE_NO_CACHE 0x00200 /* H: I bit */
#define _PAGE_WRITETHRU 0x00400 /* H: W bit */
+#define _PAGE_SPECIAL 0x00800 /* S: Special page */
#ifdef CONFIG_PTE_64BIT
/* ERPN in a PTE never gets cleared, ignore it */
#define _PMD_PRESENT_MASK (PAGE_MASK)
#define _PMD_BAD (~PAGE_MASK)
+#define __HAVE_ARCH_PTE_SPECIAL
+
#elif defined(CONFIG_8xx)
/* Definitions for 8xx embedded chips. */
#define _PAGE_PRESENT 0x0001 /* Page is valid */
#define _PAGE_ACCESSED 0x100 /* R: page referenced */
#define _PAGE_EXEC 0x200 /* software: i-cache coherency required */
#define _PAGE_RW 0x400 /* software: user write access allowed */
+#define _PAGE_SPECIAL 0x800 /* software: Special page */
+#ifdef CONFIG_PTE_64BIT
+/* We never clear the high word of the pte */
+#define _PTE_NONE_MASK (0xffffffff00000000ULL | _PAGE_HASHPTE)
+#else
#define _PTE_NONE_MASK _PAGE_HASHPTE
+#endif
#define _PMD_PRESENT 0
#define _PMD_PRESENT_MASK (PAGE_MASK)
/* Hash table based platforms need atomic updates of the linux PTE */
#define PTE_ATOMIC_UPDATES 1
+#define __HAVE_ARCH_PTE_SPECIAL
+
#endif
/*
#ifndef _PAGE_WRITETHRU
#define _PAGE_WRITETHRU 0
#endif
+#ifndef _PAGE_SPECIAL
+#define _PAGE_SPECIAL 0
+#endif
#ifndef _PMD_PRESENT_MASK
#define _PMD_PRESENT_MASK _PMD_PRESENT
#endif
#define pte_none(pte) ((pte_val(pte) & ~_PTE_NONE_MASK) == 0)
#define pte_present(pte) (pte_val(pte) & _PAGE_PRESENT)
-#define pte_clear(mm,addr,ptep) do { set_pte_at((mm), (addr), (ptep), __pte(0)); } while (0)
+#define pte_clear(mm, addr, ptep) \
+ do { pte_update(ptep, ~_PAGE_HASHPTE, 0); } while (0)
#define pmd_none(pmd) (!pmd_val(pmd))
#define pmd_bad(pmd) (pmd_val(pmd) & _PMD_BAD)
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
-static inline int pte_special(pte_t pte) { return 0; }
+static inline int pte_special(pte_t pte) { return pte_val(pte) & _PAGE_SPECIAL; }
static inline void pte_uncache(pte_t pte) { pte_val(pte) |= _PAGE_NO_CACHE; }
static inline void pte_cache(pte_t pte) { pte_val(pte) &= ~_PAGE_NO_CACHE; }
static inline pte_t pte_mkyoung(pte_t pte) {
pte_val(pte) |= _PAGE_ACCESSED; return pte; }
static inline pte_t pte_mkspecial(pte_t pte) {
- return pte; }
+ pte_val(pte) |= _PAGE_SPECIAL; return pte; }
static inline unsigned long pte_pgprot(pte_t pte)
{
return __pgprot(pte_val(pte)) & PAGE_PROT_BITS;
extern void add_hash_page(unsigned context, unsigned long va,
unsigned long pmdval);
+/* Flush an entry from the TLB/hash table */
+extern void flush_hash_entry(struct mm_struct *mm, pte_t *ptep,
+ unsigned long address);
+
/*
* Atomic PTE updates.
*
return old;
}
#else /* CONFIG_PTE_64BIT */
-/* TODO: Change that to only modify the low word and move set_pte_at()
- * out of line
- */
static inline unsigned long long pte_update(pte_t *p,
unsigned long clr,
unsigned long set)
* On machines which use an MMU hash table we avoid changing the
* _PAGE_HASHPTE bit.
*/
-static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
+
+static inline void __set_pte_at(struct mm_struct *mm, unsigned long addr,
pte_t *ptep, pte_t pte)
{
-#if _PAGE_HASHPTE != 0
+#if (_PAGE_HASHPTE != 0) && defined(CONFIG_SMP) && !defined(CONFIG_PTE_64BIT)
pte_update(ptep, ~_PAGE_HASHPTE, pte_val(pte) & ~_PAGE_HASHPTE);
+#elif defined(CONFIG_PTE_64BIT) && defined(CONFIG_SMP)
+#if _PAGE_HASHPTE != 0
+ if (pte_val(*ptep) & _PAGE_HASHPTE)
+ flush_hash_entry(mm, ptep, addr);
+#endif
+ __asm__ __volatile__("\
+ stw%U0%X0 %2,%0\n\
+ eieio\n\
+ stw%U0%X0 %L2,%1"
+ : "=m" (*ptep), "=m" (*((unsigned char *)ptep+4))
+ : "r" (pte) : "memory");
#else
- *ptep = pte;
+ *ptep = (*ptep & _PAGE_HASHPTE) | (pte & ~_PAGE_HASHPTE);
+#endif
+}
+
+static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
+ pte_t *ptep, pte_t pte)
+{
+#if defined(CONFIG_PTE_64BIT) && defined(CONFIG_SMP)
+ WARN_ON(pte_present(*ptep));
#endif
+ __set_pte_at(mm, addr, ptep, pte);
}
/*
#define SPRN_EVPR 0x3D6 /* Exception Vector Prefix Register */
#define SPRN_L1CSR0 0x3F2 /* L1 Cache Control and Status Register 0 */
#define SPRN_L1CSR1 0x3F3 /* L1 Cache Control and Status Register 1 */
+#define SPRN_MMUCSR0 0x3F4 /* MMU Control and Status Register 0 */
#define SPRN_PIT 0x3DB /* Programmable Interval Timer */
#define SPRN_BUCSR 0x3F5 /* Branch Unit Control and Status */
#define SPRN_L2CSR0 0x3F9 /* L2 Data Cache Control and Status Register 0 */
#define L2CSR0_L2LOA 0x00000080 /* L2 Cache Lock Overflow Allocate */
#define L2CSR0_L2LO 0x00000020 /* L2 Cache Lock Overflow */
+/* Bit definitions for MMUCSR0 */
+#define MMUCSR0_TLB1FI 0x00000002 /* TLB1 Flash invalidate */
+#define MMUCSR0_TLB0FI 0x00000004 /* TLB0 Flash invalidate */
+#define MMUCSR0_TLB2FI 0x00000040 /* TLB2 Flash invalidate */
+#define MMUCSR0_TLB3FI 0x00000020 /* TLB3 Flash invalidate */
+
/* Bit definitions for SGR. */
#define SGR_NORMAL 0 /* Speculative fetching allowed. */
#define SGR_GUARDED 1 /* Speculative fetching disallowed. */
#include <linux/mm.h>
extern void _tlbie(unsigned long address, unsigned int pid);
+extern void _tlbil_all(void);
+extern void _tlbil_pid(unsigned int pid);
+extern void _tlbil_va(unsigned long address, unsigned int pid);
#if defined(CONFIG_40x) || defined(CONFIG_8xx)
#define _tlbia() asm volatile ("tlbia; sync" : : : "memory")
static inline void flush_tlb_mm(struct mm_struct *mm)
{
- _tlbia();
+ _tlbil_pid(mm->context.id);
}
static inline void flush_tlb_page(struct vm_area_struct *vma,
unsigned long vmaddr)
{
- _tlbie(vmaddr, vma ? vma->vm_mm->context.id : 0);
+ _tlbil_va(vmaddr, vma ? vma->vm_mm->context.id : 0);
}
static inline void flush_tlb_page_nohash(struct vm_area_struct *vma,
unsigned long vmaddr)
{
- _tlbie(vmaddr, vma ? vma->vm_mm->context.id : 0);
+ flush_tlb_page(vma, vmaddr);
}
static inline void flush_tlb_range(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
- _tlbia();
+ _tlbil_pid(vma->vm_mm->context.id);
}
static inline void flush_tlb_kernel_range(unsigned long start,
unsigned long end)
{
- _tlbia();
+ _tlbil_pid(0);
}
#elif defined(CONFIG_PPC32)
#endif
DEFINE(PGD_TABLE_SIZE, PGD_TABLE_SIZE);
+ DEFINE(PTE_SIZE, sizeof(pte_t));
#ifdef CONFIG_KVM
DEFINE(TLBE_BYTES, sizeof(struct tlbe));
DataAccess:
EXCEPTION_PROLOG
mfspr r10,SPRN_DSISR
+ stw r10,_DSISR(r11)
andis. r0,r10,0xa470 /* weird error? */
bne 1f /* if not, try to put a PTE */
mfspr r4,SPRN_DAR /* into the hash table */
rlwinm r3,r10,32-15,21,21 /* DSISR_STORE -> _PAGE_RW */
bl hash_page
-1: stw r10,_DSISR(r11)
- mr r5,r10
+1: lwz r5,_DSISR(r11) /* get DSISR value */
mfspr r4,SPRN_DAR
EXC_XFER_EE_LITE(0x300, handle_page_fault)
* r12 is pointer to the pte
*/
#ifdef CONFIG_PTE_64BIT
-#define PTE_FLAGS_OFFSET 4
#define FIND_PTE \
rlwinm r12, r10, 13, 19, 29; /* Compute pgdir/pmd offset */ \
lwzx r11, r12, r11; /* Get pgd/pmd entry */ \
rlwimi r12, r10, 23, 20, 28; /* Compute pte address */ \
lwz r11, 4(r12); /* Get pte entry */
#else
-#define PTE_FLAGS_OFFSET 0
#define FIND_PTE \
rlwimi r11, r10, 12, 20, 29; /* Create L1 (pgdir/pmd) address */ \
lwz r11, 0(r11); /* Get L1 entry */ \
/*
* Flush MMU TLB
*/
+#ifndef CONFIG_FSL_BOOKE
+_GLOBAL(_tlbil_all)
+_GLOBAL(_tlbil_pid)
+#endif
_GLOBAL(_tlbia)
#if defined(CONFIG_40x)
sync /* Flush to memory before changing mapping */
/*
* Flush MMU TLB for a particular address
*/
+#ifndef CONFIG_FSL_BOOKE
+_GLOBAL(_tlbil_va)
+#endif
_GLOBAL(_tlbie)
#if defined(CONFIG_40x)
/* We run the search with interrupts disabled because we have to change
#endif /* ! CONFIG_40x */
blr
+#if defined(CONFIG_FSL_BOOKE)
+/*
+ * Flush MMU TLB, but only on the local processor (no broadcast)
+ */
+_GLOBAL(_tlbil_all)
+#define MMUCSR0_TLBFI (MMUCSR0_TLB0FI | MMUCSR0_TLB1FI | \
+ MMUCSR0_TLB2FI | MMUCSR0_TLB3FI)
+ li r3,(MMUCSR0_TLBFI)@l
+ mtspr SPRN_MMUCSR0, r3
+1:
+ mfspr r3,SPRN_MMUCSR0
+ andi. r3,r3,MMUCSR0_TLBFI@l
+ bne 1b
+ blr
+
+/*
+ * Flush MMU TLB for a particular process id, but only on the local processor
+ * (no broadcast)
+ */
+_GLOBAL(_tlbil_pid)
+/* we currently do an invalidate all since we don't have per pid invalidate */
+ li r3,(MMUCSR0_TLBFI)@l
+ mtspr SPRN_MMUCSR0, r3
+1:
+ mfspr r3,SPRN_MMUCSR0
+ andi. r3,r3,MMUCSR0_TLBFI@l
+ bne 1b
+ blr
+
+/*
+ * Flush MMU TLB for a particular address, but only on the local processor
+ * (no broadcast)
+ */
+_GLOBAL(_tlbil_va)
+ slwi r4,r4,16
+ mtspr SPRN_MAS6,r4 /* assume AS=0 for now */
+ tlbsx 0,r3
+ mfspr r4,SPRN_MAS1 /* check valid */
+ andis. r3,r4,MAS1_VALID@h
+ beqlr
+ rlwinm r4,r4,0,1,31
+ mtspr SPRN_MAS1,r4
+ tlbwe
+ blr
+#endif /* CONFIG_FSL_BOOKE */
+
+
/*
* Flush instruction cache.
* This is a no-op on the 601.
EXPORT_SYMBOL(flush_tlb_kernel_range);
EXPORT_SYMBOL(flush_tlb_page);
EXPORT_SYMBOL(_tlbie);
+#if defined(CONFIG_4xx) || defined(CONFIG_8xx) || defined(CONFIG_FSL_BOOKE)
+EXPORT_SYMBOL(_tlbil_va);
+#endif
#endif
EXPORT_SYMBOL(__flush_icache_range);
EXPORT_SYMBOL(flush_dcache_range);
* Returns to the caller if the access is illegal or there is no
* mapping for the address. Otherwise it places an appropriate PTE
* in the hash table and returns from the exception.
- * Uses r0, r3 - r8, ctr, lr.
+ * Uses r0, r3 - r8, r10, ctr, lr.
*/
.text
_GLOBAL(hash_page)
addi r5,r5,swapper_pg_dir@l /* kernel page table */
rlwimi r3,r9,32-12,29,29 /* MSR_PR -> _PAGE_USER */
112: add r5,r5,r7 /* convert to phys addr */
+#ifndef CONFIG_PTE_64BIT
rlwimi r5,r4,12,20,29 /* insert top 10 bits of address */
lwz r8,0(r5) /* get pmd entry */
rlwinm. r8,r8,0,0,19 /* extract address of pte page */
+#else
+ rlwinm r8,r4,13,19,29 /* Compute pgdir/pmd offset */
+ lwzx r8,r8,r5 /* Get L1 entry */
+ rlwinm. r8,r8,0,0,20 /* extract pt base address */
+#endif
#ifdef CONFIG_SMP
beq- hash_page_out /* return if no mapping */
#else
to the address following the rfi. */
beqlr-
#endif
+#ifndef CONFIG_PTE_64BIT
rlwimi r8,r4,22,20,29 /* insert next 10 bits of address */
+#else
+ rlwimi r8,r4,23,20,28 /* compute pte address */
+#endif
rlwinm r0,r3,32-3,24,24 /* _PAGE_RW access -> _PAGE_DIRTY */
ori r0,r0,_PAGE_ACCESSED|_PAGE_HASHPTE
* because almost always, there won't be a permission violation
* and there won't already be an HPTE, and thus we will have
* to update the PTE to set _PAGE_HASHPTE. -- paulus.
+ *
+ * If PTE_64BIT is set, the low word is the flags word; use that
+ * word for locking since it contains all the interesting bits.
*/
+#if (PTE_FLAGS_OFFSET != 0)
+ addi r8,r8,PTE_FLAGS_OFFSET
+#endif
retry:
- lwarx r6,0,r8 /* get linux-style pte */
+ lwarx r6,0,r8 /* get linux-style pte, flag word */
andc. r5,r3,r6 /* check access & ~permission */
#ifdef CONFIG_SMP
bne- hash_page_out /* return if access not permitted */
bnelr-
#endif
or r5,r0,r6 /* set accessed/dirty bits */
+#ifdef CONFIG_PTE_64BIT
+#ifdef CONFIG_SMP
+ subf r10,r6,r8 /* create false data dependency */
+ subi r10,r10,PTE_FLAGS_OFFSET
+ lwzx r10,r6,r10 /* Get upper PTE word */
+#else
+ lwz r10,-PTE_FLAGS_OFFSET(r8)
+#endif /* CONFIG_SMP */
+#endif /* CONFIG_PTE_64BIT */
stwcx. r5,0,r8 /* attempt to update PTE */
bne- retry /* retry if someone got there first */
* we can't take a hash table miss (assuming the code is
* covered by a BAT). -- paulus
*/
- mfmsr r10
+ mfmsr r9
SYNC
- rlwinm r0,r10,0,17,15 /* clear bit 16 (MSR_EE) */
+ rlwinm r0,r9,0,17,15 /* clear bit 16 (MSR_EE) */
rlwinm r0,r0,0,28,26 /* clear MSR_DR */
mtmsr r0
SYNC_601
tophys(r7,0)
#ifdef CONFIG_SMP
- addis r9,r7,mmu_hash_lock@ha
- addi r9,r9,mmu_hash_lock@l
-10: lwarx r0,0,r9 /* take the mmu_hash_lock */
+ addis r6,r7,mmu_hash_lock@ha
+ addi r6,r6,mmu_hash_lock@l
+10: lwarx r0,0,r6 /* take the mmu_hash_lock */
cmpi 0,r0,0
bne- 11f
- stwcx. r8,0,r9
+ stwcx. r8,0,r6
beq+ 12f
-11: lwz r0,0(r9)
+11: lwz r0,0(r6)
cmpi 0,r0,0
beq 10b
b 11b
* HPTE, so we just unlock and return.
*/
mr r8,r5
+#ifndef CONFIG_PTE_64BIT
rlwimi r8,r4,22,20,29
+#else
+ rlwimi r8,r4,23,20,28
+ addi r8,r8,PTE_FLAGS_OFFSET
+#endif
1: lwarx r6,0,r8
andi. r0,r6,_PAGE_HASHPTE
bne 9f /* if HASHPTE already set, done */
+#ifdef CONFIG_PTE_64BIT
+#ifdef CONFIG_SMP
+ subf r10,r6,r8 /* create false data dependency */
+ subi r10,r10,PTE_FLAGS_OFFSET
+ lwzx r10,r6,r10 /* Get upper PTE word */
+#else
+ lwz r10,-PTE_FLAGS_OFFSET(r8)
+#endif /* CONFIG_SMP */
+#endif /* CONFIG_PTE_64BIT */
ori r5,r6,_PAGE_HASHPTE
stwcx. r5,0,r8
bne- 1b
9:
#ifdef CONFIG_SMP
+ addis r6,r7,mmu_hash_lock@ha
+ addi r6,r6,mmu_hash_lock@l
eieio
li r0,0
- stw r0,0(r9) /* clear mmu_hash_lock */
+ stw r0,0(r6) /* clear mmu_hash_lock */
#endif
/* reenable interrupts and DR */
- mtmsr r10
+ mtmsr r9
SYNC_601
isync
* r5 contains the linux PTE, r6 contains the old value of the
* linux PTE (before setting _PAGE_HASHPTE) and r7 contains the
* offset to be added to addresses (0 if the MMU is on,
- * -KERNELBASE if it is off).
+ * -KERNELBASE if it is off). r10 contains the upper half of
+ * the PTE if CONFIG_PTE_64BIT.
* On SMP, the caller should have the mmu_hash_lock held.
* We assume that the caller has (or will) set the _PAGE_HASHPTE
* bit in the linux PTE in memory. The value passed in r6 should
BEGIN_FTR_SECTION
ori r8,r8,_PAGE_COHERENT /* set M (coherence required) */
END_FTR_SECTION_IFSET(CPU_FTR_NEED_COHERENT)
+#ifdef CONFIG_PTE_64BIT
+ /* Put the XPN bits into the PTE */
+ rlwimi r8,r10,8,20,22
+ rlwimi r8,r10,2,29,29
+#endif
/* Construct the high word of the PPC-style PTE (r5) */
rlwinm r5,r3,7,1,24 /* put VSID in 0x7fffff80 bits */
isync
/* First find a PTE in the range that has _PAGE_HASHPTE set */
+#ifndef CONFIG_PTE_64BIT
rlwimi r5,r4,22,20,29
-1: lwz r0,0(r5)
+#else
+ rlwimi r5,r4,23,20,28
+#endif
+1: lwz r0,PTE_FLAGS_OFFSET(r5)
cmpwi cr1,r6,1
andi. r0,r0,_PAGE_HASHPTE
bne 2f
ble cr1,19f
addi r4,r4,0x1000
- addi r5,r5,4
+ addi r5,r5,PTE_SIZE
addi r6,r6,-1
b 1b
* already clear, we're done (for this pte). If not,
* clear it (atomically) and proceed. -- paulus.
*/
-33: lwarx r8,0,r5 /* fetch the pte */
+#if (PTE_FLAGS_OFFSET != 0)
+ addi r5,r5,PTE_FLAGS_OFFSET
+#endif
+33: lwarx r8,0,r5 /* fetch the pte flags word */
andi. r0,r8,_PAGE_HASHPTE
beq 8f /* done if HASHPTE is already clear */
rlwinm r8,r8,0,31,29 /* clear HASHPTE bit */
8: ble cr1,9f /* if all ptes checked */
81: addi r6,r6,-1
- addi r5,r5,4 /* advance to next pte */
+ addi r5,r5,PTE_SIZE
addi r4,r4,0x1000
lwz r0,0(r5) /* check next pte */
cmpwi cr1,r6,1
#endif /* HAVE_TLBCAM */
#ifdef CONFIG_PTE_64BIT
-/* 44x uses an 8kB pgdir because it has 8-byte Linux PTEs. */
+/* Some processors use an 8kB pgdir because they have 8-byte Linux PTEs. */
#define PGDIR_ORDER 1
#else
#define PGDIR_ORDER 0
}
/*
- * Map in all of physical memory starting at KERNELBASE.
+ * Map in a big chunk of physical memory starting at KERNELBASE.
*/
void __init mapin_ram(void)
{
flush_hash_pages(mm->context.id, addr, ptephys, 1);
}
}
+EXPORT_SYMBOL(flush_hash_entry);
/*
* Called by ptep_set_access_flags, must flush on CPUs for which the
select PPC_UDBG_16550
select 4xx_SOC
select PPC_PCI_CHOICE
+ select PHYS_64BIT
config E200
bool "Freescale e200"
config PTE_64BIT
bool
- depends on 44x || E500
- default y if 44x
- default y if E500 && PHYS_64BIT
+ depends on 44x || E500 || PPC_86xx
+ default y if PHYS_64BIT
config PHYS_64BIT
- bool 'Large physical address support' if E500
- depends on 44x || E500
+ bool 'Large physical address support' if E500 || PPC_86xx
+ depends on (44x || E500 || PPC_86xx) && !PPC_83xx && !PPC_82xx
select RESOURCES_64BIT
- default y if 44x
---help---
This option enables kernel support for larger than 32-bit physical
- addresses. This features is not be available on all e500 cores.
+ addresses. This feature may not be available on all cores.
+
+ If you have more than 3.5GB of RAM or so, you also need to enable
+ SWIOTLB under Kernel Options for this to work. The actual number
+ is platform-dependent.
If in doubt, say N here.
projects / linux-2.6-omap-h63xx.git / commitdiff