diff options
| -rw-r--r-- | arch/powerpc/include/asm/machdep.h | 2 | ||||
| -rw-r--r-- | arch/powerpc/include/asm/tlbflush.h | 3 | ||||
| -rw-r--r-- | arch/powerpc/mm/hash_native_64.c | 4 | ||||
| -rw-r--r-- | arch/powerpc/mm/hash_utils_64.c | 28 | ||||
| -rw-r--r-- | arch/powerpc/mm/hugepage-hash64.c | 2 | ||||
| -rw-r--r-- | arch/powerpc/mm/pgtable_64.c | 9 | ||||
| -rw-r--r-- | arch/powerpc/platforms/pseries/lpar.c | 2 |
7 files changed, 37 insertions, 13 deletions
diff --git a/arch/powerpc/include/asm/machdep.h b/arch/powerpc/include/asm/machdep.h index 15c9150a58cc..e5c0919acca4 100644 --- a/arch/powerpc/include/asm/machdep.h +++ b/arch/powerpc/include/asm/machdep.h @@ -60,7 +60,7 @@ struct machdep_calls { void (*hugepage_invalidate)(unsigned long vsid, unsigned long addr, unsigned char *hpte_slot_array, - int psize, int ssize); + int psize, int ssize, int local); /* special for kexec, to be called in real mode, linear mapping is * destroyed as well */ void (*hpte_clear_all)(void); diff --git a/arch/powerpc/include/asm/tlbflush.h b/arch/powerpc/include/asm/tlbflush.h index 19550d346fea..4d3ecd8d8929 100644 --- a/arch/powerpc/include/asm/tlbflush.h +++ b/arch/powerpc/include/asm/tlbflush.h @@ -128,7 +128,8 @@ extern void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize, int ssize, int local); extern void flush_hash_range(unsigned long number, int local); extern void flush_hash_hugepage(unsigned long vsid, unsigned long addr, - pmd_t *pmdp, unsigned int psize, int ssize); + pmd_t *pmdp, unsigned int psize, int ssize, + int local); static inline void local_flush_tlb_mm(struct mm_struct *mm) { diff --git a/arch/powerpc/mm/hash_native_64.c b/arch/powerpc/mm/hash_native_64.c index 558e50bac6f7..13700911b522 100644 --- a/arch/powerpc/mm/hash_native_64.c +++ b/arch/powerpc/mm/hash_native_64.c @@ -425,7 +425,7 @@ static void native_hpte_invalidate(unsigned long slot, unsigned long vpn, static void native_hugepage_invalidate(unsigned long vsid, unsigned long addr, unsigned char *hpte_slot_array, - int psize, int ssize) + int psize, int ssize, int local) { int i; struct hash_pte *hptep; @@ -471,7 +471,7 @@ static void native_hugepage_invalidate(unsigned long vsid, * instruction compares entry_VA in tlb with the VA specified * here */ - tlbie(vpn, psize, actual_psize, ssize, 0); + tlbie(vpn, psize, actual_psize, ssize, local); } local_irq_restore(flags); } diff --git a/arch/powerpc/mm/hash_utils_64.c b/arch/powerpc/mm/hash_utils_64.c index 6c2076c65d7c..68211d398fdb 100644 --- a/arch/powerpc/mm/hash_utils_64.c +++ b/arch/powerpc/mm/hash_utils_64.c @@ -1317,7 +1317,7 @@ void flush_hash_page(unsigned long vpn, real_pte_t pte, int psize, int ssize, #ifdef CONFIG_TRANSPARENT_HUGEPAGE void flush_hash_hugepage(unsigned long vsid, unsigned long addr, - pmd_t *pmdp, unsigned int psize, int ssize) + pmd_t *pmdp, unsigned int psize, int ssize, int local) { int i, max_hpte_count, valid; unsigned long s_addr; @@ -1334,9 +1334,11 @@ void flush_hash_hugepage(unsigned long vsid, unsigned long addr, if (!hpte_slot_array) return; - if (ppc_md.hugepage_invalidate) - return ppc_md.hugepage_invalidate(vsid, s_addr, hpte_slot_array, - psize, ssize); + if (ppc_md.hugepage_invalidate) { + ppc_md.hugepage_invalidate(vsid, s_addr, hpte_slot_array, + psize, ssize, local); + goto tm_abort; + } /* * No bluk hpte removal support, invalidate each entry */ @@ -1362,8 +1364,24 @@ void flush_hash_hugepage(unsigned long vsid, unsigned long addr, slot = (hash & htab_hash_mask) * HPTES_PER_GROUP; slot += hidx & _PTEIDX_GROUP_IX; ppc_md.hpte_invalidate(slot, vpn, psize, - MMU_PAGE_16M, ssize, 0); + MMU_PAGE_16M, ssize, local); + } +tm_abort: +#ifdef CONFIG_PPC_TRANSACTIONAL_MEM + /* Transactions are not aborted by tlbiel, only tlbie. + * Without, syncing a page back to a block device w/ PIO could pick up + * transactional data (bad!) so we force an abort here. Before the + * sync the page will be made read-only, which will flush_hash_page. + * BIG ISSUE here: if the kernel uses a page from userspace without + * unmapping it first, it may see the speculated version. + */ + if (local && cpu_has_feature(CPU_FTR_TM) && + current->thread.regs && + MSR_TM_ACTIVE(current->thread.regs->msr)) { + tm_enable(); + tm_abort(TM_CAUSE_TLBI); } +#endif } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ diff --git a/arch/powerpc/mm/hugepage-hash64.c b/arch/powerpc/mm/hugepage-hash64.c index 1b3ad46a71b5..3a648cd363ae 100644 --- a/arch/powerpc/mm/hugepage-hash64.c +++ b/arch/powerpc/mm/hugepage-hash64.c @@ -95,7 +95,7 @@ int __hash_page_thp(unsigned long ea, unsigned long access, unsigned long vsid, */ if ((old_pmd & _PAGE_HASHPTE) && !(old_pmd & _PAGE_COMBO)) flush_hash_hugepage(vsid, ea, pmdp, MMU_PAGE_64K, - ssize); + ssize, local); } valid = hpte_valid(hpte_slot_array, index); diff --git a/arch/powerpc/mm/pgtable_64.c b/arch/powerpc/mm/pgtable_64.c index c175c990580e..eea9fa1f8ae7 100644 --- a/arch/powerpc/mm/pgtable_64.c +++ b/arch/powerpc/mm/pgtable_64.c @@ -739,9 +739,10 @@ void pmdp_invalidate(struct vm_area_struct *vma, unsigned long address, void hpte_do_hugepage_flush(struct mm_struct *mm, unsigned long addr, pmd_t *pmdp, unsigned long old_pmd) { - int ssize; + int ssize, local = 0; unsigned int psize; unsigned long vsid; + const struct cpumask *tmp; /* get the base page size,vsid and segment size */ #ifdef CONFIG_DEBUG_VM @@ -762,7 +763,11 @@ void hpte_do_hugepage_flush(struct mm_struct *mm, unsigned long addr, ssize = mmu_kernel_ssize; } - return flush_hash_hugepage(vsid, addr, pmdp, psize, ssize); + tmp = cpumask_of(smp_processor_id()); + if (cpumask_equal(mm_cpumask(mm), tmp)) + local = 1; + + return flush_hash_hugepage(vsid, addr, pmdp, psize, ssize, local); } static pmd_t pmd_set_protbits(pmd_t pmd, pgprot_t pgprot) diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index d214a012b026..832f221840f2 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -442,7 +442,7 @@ static void __pSeries_lpar_hugepage_invalidate(unsigned long *slot, static void pSeries_lpar_hugepage_invalidate(unsigned long vsid, unsigned long addr, unsigned char *hpte_slot_array, - int psize, int ssize) + int psize, int ssize, int local) { int i, index = 0; unsigned long s_addr = addr; |