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authorLinus Torvalds <torvalds@linux-foundation.org>2019-05-19 10:10:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-19 10:10:15 -0700
commit86a78a8b8d0414455c2174852968ce54205add82 (patch)
tree333fd5f6bd0a20855ec6cda3bfb2646a960fe226 /arch/powerpc/mm
parentbcd1739788e2ea111d0d2efe1ed6633d9f6a20da (diff)
parent672eaf37db9f99fd794eed2c68a8b3b05d484081 (diff)
Merge tag 'powerpc-5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman: "One fix going back to stable, for a bug on 32-bit introduced when we added support for THREAD_INFO_IN_TASK. A fix for a typo in a recent rework of our hugetlb code that leads to crashes on 64-bit when using hugetlbfs with a 4K PAGE_SIZE. Two fixes for our recent rework of the address layout on 64-bit hash CPUs, both only triggered when userspace tries to access addresses outside the user or kernel address ranges. Finally a fix for a recently introduced double free in an error path in our cacheinfo code. Thanks to: Aneesh Kumar K.V, Christophe Leroy, Sachin Sant, Tobin C. Harding" * tag 'powerpc-5.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: powerpc/cacheinfo: Remove double free powerpc/mm/hash: Fix get_region_id() for invalid addresses powerpc/mm: Drop VM_BUG_ON in get_region_id() powerpc/mm: Fix crashes with hugepages & 4K pages powerpc/32s: fix flush_hash_pages() on SMP
Diffstat (limited to 'arch/powerpc/mm')
-rw-r--r--arch/powerpc/mm/book3s32/hash_low.S3
-rw-r--r--arch/powerpc/mm/hugetlbpage.c2
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/mm/book3s32/hash_low.S b/arch/powerpc/mm/book3s32/hash_low.S
index e27792d0b744..8366c2abeafc 100644
--- a/arch/powerpc/mm/book3s32/hash_low.S
+++ b/arch/powerpc/mm/book3s32/hash_low.S
@@ -539,7 +539,8 @@ _GLOBAL(flush_hash_pages)
#ifdef CONFIG_SMP
lis r9, (mmu_hash_lock - PAGE_OFFSET)@ha
addi r9, r9, (mmu_hash_lock - PAGE_OFFSET)@l
- lwz r8,TASK_CPU(r2)
+ tophys (r8, r2)
+ lwz r8, TASK_CPU(r8)
oris r8,r8,9
10: lwarx r0,0,r9
cmpi 0,r0,0
diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index c5c9ff2d7afc..b5d92dc32844 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -556,7 +556,7 @@ static int __init add_huge_page_size(unsigned long long size)
if (size <= PAGE_SIZE || !is_power_of_2(size))
return -EINVAL;
- mmu_psize = check_and_get_huge_psize(size);
+ mmu_psize = check_and_get_huge_psize(shift);
if (mmu_psize < 0)
return -EINVAL;