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powerpc fixes for 4.7 #4 

- mm/radix: Update to tlb functions ric argument from Aneesh Kumar K.V
  - mm/radix: Flush page walk cache when freeing page table from Aneesh Kumar K.V
  - mm/hash: Use the correct PPP mask when updating HPTE from Aneesh Kumar K.V
  - mm/hash: Don't add memory coherence if cache inhibited is set from Aneesh Kumar K.V
  - mm/radix: Update Radix tree size as per ISA 3.0 from Aneesh Kumar K.V
  - eeh: Fix invalid cached PE primary bus from Gavin Shan
  - Fix faults caused by radix patching of SLB miss handler from Michael Ellerman
  - bpf/jit: Disable classic BPF JIT on ppc64le from Naveen N. Rao
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Merge tag 'powerpc-4.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:
 "mm/radix (Aneesh Kumar K.V):
   - Update to tlb functions ric argument
   - Flush page walk cache when freeing page table
   - Update Radix tree size as per ISA 3.0

  mm/hash (Aneesh Kumar K.V):
   - Use the correct PPP mask when updating HPTE
   - Don't add memory coherence if cache inhibited is set

  eeh (Gavin Shan):
   - Fix invalid cached PE primary bus

  bpf/jit (Naveen N. Rao):
   - Disable classic BPF JIT on ppc64le

  .. and fix faults caused by radix patching of SLB miss handler
  (Michael Ellerman)"

* tag 'powerpc-4.7-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/bpf/jit: Disable classic BPF JIT on ppc64le
  powerpc: Fix faults caused by radix patching of SLB miss handler
  powerpc/eeh: Fix invalid cached PE primary bus
  powerpc/mm/radix: Update Radix tree size as per ISA 3.0
  powerpc/mm/hash: Don't add memory coherence if cache inhibited is set
  powerpc/mm/hash: Use the correct PPP mask when updating HPTE
  powerpc/mm/radix: Flush page walk cache when freeing page table
  powerpc/mm/radix: Update to tlb functions ric argument
This commit is contained in:
Linus Torvalds 2016-06-25 06:01:48 -07:00
Родитель 9521d39976 844e3be476
Коммит 2f6e97477b
15 изменённых файлов: 137 добавлений и 51 удалений
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2
arch/powerpc/Kconfig
Просмотреть файл

@ -128,7 +128,7 @@ config PPC
select IRQ_FORCED_THREADING
select HAVE_RCU_TABLE_FREE if SMP
select HAVE_SYSCALL_TRACEPOINTS
select HAVE_CBPF_JIT
select HAVE_CBPF_JIT if CPU_BIG_ENDIAN
select HAVE_ARCH_JUMP_LABEL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_HAS_GCOV_PROFILE_ALL

1
arch/powerpc/include/asm/book3s/32/pgalloc.h
Просмотреть файл

@ -102,7 +102,6 @@ static inline void pgtable_free_tlb(struct mmu_gather *tlb,
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
unsigned long address)
{
tlb_flush_pgtable(tlb, address);
pgtable_page_dtor(table);
pgtable_free_tlb(tlb, page_address(table), 0);
}

1
arch/powerpc/include/asm/book3s/64/mmu-hash.h
Просмотреть файл

@ -88,6 +88,7 @@
#define HPTE_R_RPN_SHIFT 12
#define HPTE_R_RPN ASM_CONST(0x0ffffffffffff000)
#define HPTE_R_PP ASM_CONST(0x0000000000000003)
#define HPTE_R_PPP ASM_CONST(0x8000000000000003)
#define HPTE_R_N ASM_CONST(0x0000000000000004)
#define HPTE_R_G ASM_CONST(0x0000000000000008)
#define HPTE_R_M ASM_CONST(0x0000000000000010)

16
arch/powerpc/include/asm/book3s/64/pgalloc.h
Просмотреть файл

@ -109,6 +109,11 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
static inline void __pud_free_tlb(struct mmu_gather *tlb, pud_t *pud,
unsigned long address)
{
/*
* By now all the pud entries should be none entries. So go
* ahead and flush the page walk cache
*/
flush_tlb_pgtable(tlb, address);
pgtable_free_tlb(tlb, pud, PUD_INDEX_SIZE);
}
@ -125,6 +130,11 @@ static inline void pmd_free(struct mm_struct *mm, pmd_t *pmd)
static inline void __pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd,
unsigned long address)
{
/*
* By now all the pud entries should be none entries. So go
* ahead and flush the page walk cache
*/
flush_tlb_pgtable(tlb, address);
return pgtable_free_tlb(tlb, pmd, PMD_CACHE_INDEX);
}
@ -196,7 +206,11 @@ static inline void pte_free(struct mm_struct *mm, pgtable_t ptepage)
static inline void __pte_free_tlb(struct mmu_gather *tlb, pgtable_t table,
unsigned long address)
{
tlb_flush_pgtable(tlb, address);
/*
* By now all the pud entries should be none entries. So go
* ahead and flush the page walk cache
*/
flush_tlb_pgtable(tlb, address);
pgtable_free_tlb(tlb, table, 0);
}

15
arch/powerpc/include/asm/book3s/64/radix.h
Просмотреть файл

@ -228,5 +228,20 @@ extern void radix__vmemmap_remove_mapping(unsigned long start,
extern int radix__map_kernel_page(unsigned long ea, unsigned long pa,
pgprot_t flags, unsigned int psz);
static inline unsigned long radix__get_tree_size(void)
{
unsigned long rts_field;
/*
* we support 52 bits, hence 52-31 = 21, 0b10101
* RTS encoding details
* bits 0 - 3 of rts -> bits 6 - 8 unsigned long
* bits 4 - 5 of rts -> bits 62 - 63 of unsigned long
*/
rts_field = (0x5UL << 5); /* 6 - 8 bits */
rts_field |= (0x2UL << 61);
return rts_field;
}
#endif /* __ASSEMBLY__ */
#endif

3
arch/powerpc/include/asm/book3s/64/tlbflush-radix.h
Просмотреть файл

@ -18,16 +18,19 @@ extern void radix__local_flush_tlb_mm(struct mm_struct *mm);
extern void radix__local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
extern void radix___local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap, int nid);
extern void radix__local_flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr);
extern void radix__tlb_flush(struct mmu_gather *tlb);
#ifdef CONFIG_SMP
extern void radix__flush_tlb_mm(struct mm_struct *mm);
extern void radix__flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr);
extern void radix___flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap, int nid);
extern void radix__flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr);
#else
#define radix__flush_tlb_mm(mm) radix__local_flush_tlb_mm(mm)
#define radix__flush_tlb_page(vma,addr) radix__local_flush_tlb_page(vma,addr)
#define radix___flush_tlb_page(mm,addr,p,i) radix___local_flush_tlb_page(mm,addr,p,i)
#define radix__flush_tlb_pwc(tlb, addr) radix__local_flush_tlb_pwc(tlb, addr)
#endif
#endif

14
arch/powerpc/include/asm/book3s/64/tlbflush.h
Просмотреть файл

@ -72,5 +72,19 @@ static inline void flush_tlb_page(struct vm_area_struct *vma,
#define flush_tlb_mm(mm) local_flush_tlb_mm(mm)
#define flush_tlb_page(vma, addr) local_flush_tlb_page(vma, addr)
#endif /* CONFIG_SMP */
/*
* flush the page walk cache for the address
*/
static inline void flush_tlb_pgtable(struct mmu_gather *tlb, unsigned long address)
{
/*
* Flush the page table walk cache on freeing a page table. We already
* have marked the upper/higher level page table entry none by now.
* So it is safe to flush PWC here.
*/
if (!radix_enabled())
return;
radix__flush_tlb_pwc(tlb, address);
}
#endif /* _ASM_POWERPC_BOOK3S_64_TLBFLUSH_H */

5
arch/powerpc/include/asm/book3s/pgalloc.h
Просмотреть файл

@ -4,11 +4,6 @@
#include <linux/mm.h>
extern void tlb_remove_table(struct mmu_gather *tlb, void *table);
static inline void tlb_flush_pgtable(struct mmu_gather *tlb,
unsigned long address)
{
}
#ifdef CONFIG_PPC64
#include <asm/book3s/64/pgalloc.h>

7
arch/powerpc/kernel/eeh_driver.c
Просмотреть файл

@ -642,7 +642,6 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
if (pe->type & EEH_PE_VF) {
eeh_pe_dev_traverse(pe, eeh_rmv_device, NULL);
} else {
eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
pci_lock_rescan_remove();
pci_hp_remove_devices(bus);
pci_unlock_rescan_remove();
@ -692,10 +691,12 @@ static int eeh_reset_device(struct eeh_pe *pe, struct pci_bus *bus,
*/
edev = list_first_entry(&pe->edevs, struct eeh_dev, list);
eeh_pe_traverse(pe, eeh_pe_detach_dev, NULL);
if (pe->type & EEH_PE_VF)
if (pe->type & EEH_PE_VF) {
eeh_add_virt_device(edev, NULL);
else
} else {
eeh_pe_state_clear(pe, EEH_PE_PRI_BUS);
pci_hp_add_devices(bus);
}
} else if (frozen_bus && rmv_data->removed) {
pr_info("EEH: Sleep 5s ahead of partial hotplug\n");
ssleep(5);

7
arch/powerpc/kernel/exceptions-64s.S
Просмотреть файл

@ -1399,11 +1399,12 @@ END_MMU_FTR_SECTION_IFCLR(MMU_FTR_RADIX)
lwz r9,PACA_EXSLB+EX_CCR(r13) /* get saved CR */
mtlr r10
BEGIN_MMU_FTR_SECTION
b 2f
END_MMU_FTR_SECTION_IFSET(MMU_FTR_RADIX)
andi. r10,r12,MSR_RI /* check for unrecoverable exception */
BEGIN_MMU_FTR_SECTION
beq- 2f
FTR_SECTION_ELSE
b 2f
ALT_MMU_FTR_SECTION_END_IFCLR(MMU_FTR_RADIX)
.machine push
.machine "power4"

8
arch/powerpc/mm/hash_native_64.c
Просмотреть файл

@ -316,8 +316,8 @@ static long native_hpte_updatepp(unsigned long slot, unsigned long newpp,
DBG_LOW(" -> hit\n");
/* Update the HPTE */
hptep->r = cpu_to_be64((be64_to_cpu(hptep->r) &
~(HPTE_R_PP | HPTE_R_N)) |
(newpp & (HPTE_R_PP | HPTE_R_N |
~(HPTE_R_PPP | HPTE_R_N)) |
(newpp & (HPTE_R_PPP | HPTE_R_N |
HPTE_R_C)));
}
native_unlock_hpte(hptep);
@ -385,8 +385,8 @@ static void native_hpte_updateboltedpp(unsigned long newpp, unsigned long ea,
/* Update the HPTE */
hptep->r = cpu_to_be64((be64_to_cpu(hptep->r) &
~(HPTE_R_PP | HPTE_R_N)) |
(newpp & (HPTE_R_PP | HPTE_R_N)));
~(HPTE_R_PPP | HPTE_R_N)) |
(newpp & (HPTE_R_PPP | HPTE_R_N)));
/*
* Ensure it is out of the tlb too. Bolted entries base and
* actual page size will be same.

14
arch/powerpc/mm/hash_utils_64.c
Просмотреть файл

@ -201,9 +201,8 @@ unsigned long htab_convert_pte_flags(unsigned long pteflags)
/*
* We can't allow hardware to update hpte bits. Hence always
* set 'R' bit and set 'C' if it is a write fault
* Memory coherence is always enabled
*/
rflags |= HPTE_R_R | HPTE_R_M;
rflags |= HPTE_R_R;
if (pteflags & _PAGE_DIRTY)
rflags |= HPTE_R_C;
@ -213,10 +212,15 @@ unsigned long htab_convert_pte_flags(unsigned long pteflags)
if ((pteflags & _PAGE_CACHE_CTL) == _PAGE_TOLERANT)
rflags |= HPTE_R_I;
if ((pteflags & _PAGE_CACHE_CTL ) == _PAGE_NON_IDEMPOTENT)
else if ((pteflags & _PAGE_CACHE_CTL) == _PAGE_NON_IDEMPOTENT)
rflags |= (HPTE_R_I | HPTE_R_G);
if ((pteflags & _PAGE_CACHE_CTL) == _PAGE_SAO)
rflags |= (HPTE_R_I | HPTE_R_W);
else if ((pteflags & _PAGE_CACHE_CTL) == _PAGE_SAO)
rflags |= (HPTE_R_W | HPTE_R_I | HPTE_R_M);
else
/*
* Add memory coherence if cache inhibited is not set
*/
rflags |= HPTE_R_M;
return rflags;
}

2
arch/powerpc/mm/mmu_context_book3s64.c
Просмотреть файл

@ -65,7 +65,7 @@ static int radix__init_new_context(struct mm_struct *mm, int index)
/*
* set the process table entry,
*/
rts_field = 3ull << PPC_BITLSHIFT(2);
rts_field = radix__get_tree_size();
process_tb[index].prtb0 = cpu_to_be64(rts_field | __pa(mm->pgd) | RADIX_PGD_INDEX_SIZE);
return 0;
}

9
arch/powerpc/mm/pgtable-radix.c
Просмотреть файл

@ -160,9 +160,8 @@ redo:
process_tb = early_alloc_pgtable(1UL << PRTB_SIZE_SHIFT);
/*
* Fill in the process table.
* we support 52 bits, hence 52-28 = 24, 11000
*/
rts_field = 3ull << PPC_BITLSHIFT(2);
rts_field = radix__get_tree_size();
process_tb->prtb0 = cpu_to_be64(rts_field | __pa(init_mm.pgd) | RADIX_PGD_INDEX_SIZE);
/*
* Fill in the partition table. We are suppose to use effective address
@ -176,10 +175,8 @@ redo:
static void __init radix_init_partition_table(void)
{
unsigned long rts_field;
/*
* we support 52 bits, hence 52-28 = 24, 11000
*/
rts_field = 3ull << PPC_BITLSHIFT(2);
rts_field = radix__get_tree_size();
BUILD_BUG_ON_MSG((PATB_SIZE_SHIFT > 24), "Partition table size too large.");
partition_tb = early_alloc_pgtable(1UL << PATB_SIZE_SHIFT);

84
arch/powerpc/mm/tlb-radix.c
Просмотреть файл

@ -18,16 +18,20 @@
static DEFINE_RAW_SPINLOCK(native_tlbie_lock);
static inline void __tlbiel_pid(unsigned long pid, int set)
#define RIC_FLUSH_TLB 0
#define RIC_FLUSH_PWC 1
#define RIC_FLUSH_ALL 2
static inline void __tlbiel_pid(unsigned long pid, int set,
unsigned long ric)
{
unsigned long rb,rs,ric,prs,r;
unsigned long rb,rs,prs,r;
rb = PPC_BIT(53); /* IS = 1 */
rb |= set << PPC_BITLSHIFT(51);
rs = ((unsigned long)pid) << PPC_BITLSHIFT(31);
prs = 1; /* process scoped */
r = 1; /* raidx format */
ric = 2; /* invalidate all the caches */
asm volatile("ptesync": : :"memory");
asm volatile(".long 0x7c000224 | (%0 << 11) | (%1 << 16) |"
@ -39,25 +43,24 @@ static inline void __tlbiel_pid(unsigned long pid, int set)
/*
* We use 128 set in radix mode and 256 set in hpt mode.
*/
static inline void _tlbiel_pid(unsigned long pid)
static inline void _tlbiel_pid(unsigned long pid, unsigned long ric)
{
int set;
for (set = 0; set < POWER9_TLB_SETS_RADIX ; set++) {
__tlbiel_pid(pid, set);
__tlbiel_pid(pid, set, ric);
}
return;
}
static inline void _tlbie_pid(unsigned long pid)
static inline void _tlbie_pid(unsigned long pid, unsigned long ric)
{
unsigned long rb,rs,ric,prs,r;
unsigned long rb,rs,prs,r;
rb = PPC_BIT(53); /* IS = 1 */
rs = pid << PPC_BITLSHIFT(31);
prs = 1; /* process scoped */
r = 1; /* raidx format */
ric = 2; /* invalidate all the caches */
asm volatile("ptesync": : :"memory");
asm volatile(".long 0x7c000264 | (%0 << 11) | (%1 << 16) |"
@ -67,16 +70,15 @@ static inline void _tlbie_pid(unsigned long pid)
}
static inline void _tlbiel_va(unsigned long va, unsigned long pid,
unsigned long ap)
unsigned long ap, unsigned long ric)
{
unsigned long rb,rs,ric,prs,r;
unsigned long rb,rs,prs,r;
rb = va & ~(PPC_BITMASK(52, 63));
rb |= ap << PPC_BITLSHIFT(58);
rs = pid << PPC_BITLSHIFT(31);
prs = 1; /* process scoped */
r = 1; /* raidx format */
ric = 0; /* no cluster flush yet */
asm volatile("ptesync": : :"memory");
asm volatile(".long 0x7c000224 | (%0 << 11) | (%1 << 16) |"
@ -86,16 +88,15 @@ static inline void _tlbiel_va(unsigned long va, unsigned long pid,
}
static inline void _tlbie_va(unsigned long va, unsigned long pid,
unsigned long ap)
unsigned long ap, unsigned long ric)
{
unsigned long rb,rs,ric,prs,r;
unsigned long rb,rs,prs,r;
rb = va & ~(PPC_BITMASK(52, 63));
rb |= ap << PPC_BITLSHIFT(58);
rs = pid << PPC_BITLSHIFT(31);
prs = 1; /* process scoped */
r = 1; /* raidx format */
ric = 0; /* no cluster flush yet */
asm volatile("ptesync": : :"memory");
asm volatile(".long 0x7c000264 | (%0 << 11) | (%1 << 16) |"
@ -122,11 +123,26 @@ void radix__local_flush_tlb_mm(struct mm_struct *mm)
preempt_disable();
pid = mm->context.id;
if (pid != MMU_NO_CONTEXT)
_tlbiel_pid(pid);
_tlbiel_pid(pid, RIC_FLUSH_ALL);
preempt_enable();
}
EXPORT_SYMBOL(radix__local_flush_tlb_mm);
void radix__local_flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr)
{
unsigned long pid;
struct mm_struct *mm = tlb->mm;
preempt_disable();
pid = mm->context.id;
if (pid != MMU_NO_CONTEXT)
_tlbiel_pid(pid, RIC_FLUSH_PWC);
preempt_enable();
}
EXPORT_SYMBOL(radix__local_flush_tlb_pwc);
void radix___local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap, int nid)
{
@ -135,7 +151,7 @@ void radix___local_flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
preempt_disable();
pid = mm ? mm->context.id : 0;
if (pid != MMU_NO_CONTEXT)
_tlbiel_va(vmaddr, pid, ap);
_tlbiel_va(vmaddr, pid, ap, RIC_FLUSH_TLB);
preempt_enable();
}
@ -172,16 +188,42 @@ void radix__flush_tlb_mm(struct mm_struct *mm)
if (lock_tlbie)
raw_spin_lock(&native_tlbie_lock);
_tlbie_pid(pid);
_tlbie_pid(pid, RIC_FLUSH_ALL);
if (lock_tlbie)
raw_spin_unlock(&native_tlbie_lock);
} else
_tlbiel_pid(pid);
_tlbiel_pid(pid, RIC_FLUSH_ALL);
no_context:
preempt_enable();
}
EXPORT_SYMBOL(radix__flush_tlb_mm);
void radix__flush_tlb_pwc(struct mmu_gather *tlb, unsigned long addr)
{
unsigned long pid;
struct mm_struct *mm = tlb->mm;
preempt_disable();
pid = mm->context.id;
if (unlikely(pid == MMU_NO_CONTEXT))
goto no_context;
if (!mm_is_core_local(mm)) {
int lock_tlbie = !mmu_has_feature(MMU_FTR_LOCKLESS_TLBIE);
if (lock_tlbie)
raw_spin_lock(&native_tlbie_lock);
_tlbie_pid(pid, RIC_FLUSH_PWC);
if (lock_tlbie)
raw_spin_unlock(&native_tlbie_lock);
} else
_tlbiel_pid(pid, RIC_FLUSH_PWC);
no_context:
preempt_enable();
}
EXPORT_SYMBOL(radix__flush_tlb_pwc);
void radix___flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
unsigned long ap, int nid)
{
@ -196,11 +238,11 @@ void radix___flush_tlb_page(struct mm_struct *mm, unsigned long vmaddr,
if (lock_tlbie)
raw_spin_lock(&native_tlbie_lock);
_tlbie_va(vmaddr, pid, ap);
_tlbie_va(vmaddr, pid, ap, RIC_FLUSH_TLB);
if (lock_tlbie)
raw_spin_unlock(&native_tlbie_lock);
} else
_tlbiel_va(vmaddr, pid, ap);
_tlbiel_va(vmaddr, pid, ap, RIC_FLUSH_TLB);
bail:
preempt_enable();
}
@ -224,7 +266,7 @@ void radix__flush_tlb_kernel_range(unsigned long start, unsigned long end)
if (lock_tlbie)
raw_spin_lock(&native_tlbie_lock);
_tlbie_pid(0);
_tlbie_pid(0, RIC_FLUSH_ALL);
if (lock_tlbie)
raw_spin_unlock(&native_tlbie_lock);
}