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| author | Joel Stanley <joel@jms.id.au> | 2018-11-27 08:23:56 +0300 |
|---|---|---|
| committer | Joel Stanley <joel@jms.id.au> | 2018-11-27 08:24:09 +0300 |
| commit | d608acfd4ac3fe17f3081bee8fcd4dcd896c2ffa (patch) | |
| tree | ade4450a72a2e358a1d2e5cde321de0097fb291c /arch/powerpc/mm/slice.c | |
| parent | 62ccc3924eff37012bd0c227d8b7dc71188fc358 (diff) | |
| parent | a9da8725b7a744be3ff0ff44cab2547e4d1e6675 (diff) | |
| download | linux-dev-4.18.tar.xz | |
Merge tag 'v4.18.20' into dev-4.18dev-4.18
This is the 4.18.20 stable release
Signed-off-by: Joel Stanley <joel@jms.id.au>
Diffstat (limited to 'arch/powerpc/mm/slice.c')
| -rw-r--r-- | arch/powerpc/mm/slice.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/arch/powerpc/mm/slice.c b/arch/powerpc/mm/slice.c index 205fe557ca10..4f213ba33491 100644 --- a/arch/powerpc/mm/slice.c +++ b/arch/powerpc/mm/slice.c @@ -61,6 +61,13 @@ static void slice_print_mask(const char *label, const struct slice_mask *mask) { #endif +static inline bool slice_addr_is_low(unsigned long addr) +{ + u64 tmp = (u64)addr; + + return tmp < SLICE_LOW_TOP; +} + static void slice_range_to_mask(unsigned long start, unsigned long len, struct slice_mask *ret) { @@ -70,7 +77,7 @@ static void slice_range_to_mask(unsigned long start, unsigned long len, if (SLICE_NUM_HIGH) bitmap_zero(ret->high_slices, SLICE_NUM_HIGH); - if (start < SLICE_LOW_TOP) { + if (slice_addr_is_low(start)) { unsigned long mend = min(end, (unsigned long)(SLICE_LOW_TOP - 1)); @@ -78,7 +85,7 @@ static void slice_range_to_mask(unsigned long start, unsigned long len, - (1u << GET_LOW_SLICE_INDEX(start)); } - if ((start + len) > SLICE_LOW_TOP) { + if (SLICE_NUM_HIGH && !slice_addr_is_low(end)) { unsigned long start_index = GET_HIGH_SLICE_INDEX(start); unsigned long align_end = ALIGN(end, (1UL << SLICE_HIGH_SHIFT)); unsigned long count = GET_HIGH_SLICE_INDEX(align_end) - start_index; @@ -133,7 +140,7 @@ static void slice_mask_for_free(struct mm_struct *mm, struct slice_mask *ret, if (!slice_low_has_vma(mm, i)) ret->low_slices |= 1u << i; - if (high_limit <= SLICE_LOW_TOP) + if (slice_addr_is_low(high_limit - 1)) return; for (i = 0; i < GET_HIGH_SLICE_INDEX(high_limit); i++) @@ -182,7 +189,7 @@ static bool slice_check_range_fits(struct mm_struct *mm, unsigned long end = start + len - 1; u64 low_slices = 0; - if (start < SLICE_LOW_TOP) { + if (slice_addr_is_low(start)) { unsigned long mend = min(end, (unsigned long)(SLICE_LOW_TOP - 1)); @@ -192,7 +199,7 @@ static bool slice_check_range_fits(struct mm_struct *mm, if ((low_slices & available->low_slices) != low_slices) return false; - if (SLICE_NUM_HIGH && ((start + len) > SLICE_LOW_TOP)) { + if (SLICE_NUM_HIGH && !slice_addr_is_low(end)) { unsigned long start_index = GET_HIGH_SLICE_INDEX(start); unsigned long align_end = ALIGN(end, (1UL << SLICE_HIGH_SHIFT)); unsigned long count = GET_HIGH_SLICE_INDEX(align_end) - start_index; @@ -303,7 +310,7 @@ static bool slice_scan_available(unsigned long addr, int end, unsigned long *boundary_addr) { unsigned long slice; - if (addr < SLICE_LOW_TOP) { + if (slice_addr_is_low(addr)) { slice = GET_LOW_SLICE_INDEX(addr); *boundary_addr = (slice + end) << SLICE_LOW_SHIFT; return !!(available->low_slices & (1u << slice)); @@ -706,7 +713,7 @@ unsigned int get_slice_psize(struct mm_struct *mm, unsigned long addr) VM_BUG_ON(radix_enabled()); - if (addr < SLICE_LOW_TOP) { + if (slice_addr_is_low(addr)) { psizes = mm->context.low_slices_psize; index = GET_LOW_SLICE_INDEX(addr); } else { |