diff options
| -rw-r--r-- | include/system/ramblock.h | 6 | ||||
| -rw-r--r-- | system/physmem.c | 28 |
2 files changed, 18 insertions, 16 deletions
diff --git a/include/system/ramblock.h b/include/system/ramblock.h index 530c5a2e4c..85cceff6bc 100644 --- a/include/system/ramblock.h +++ b/include/system/ramblock.h @@ -103,8 +103,10 @@ struct RamBlockAttributes { QLIST_HEAD(, RamDiscardListener) rdl_list; }; -int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length); -int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t start, +/* @offset: the offset within the RAMBlock */ +int ram_block_discard_range(RAMBlock *rb, uint64_t offset, size_t length); +/* @offset: the offset within the RAMBlock */ +int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t offset, size_t length); RamBlockAttributes *ram_block_attributes_create(RAMBlock *ram_block); diff --git a/system/physmem.c b/system/physmem.c index cb3e5fcfdc..a37592fd32 100644 --- a/system/physmem.c +++ b/system/physmem.c @@ -3795,18 +3795,18 @@ int qemu_ram_foreach_block(RAMBlockIterFunc func, void *opaque) } /* - * Unmap pages of memory from start to start+length such that + * Unmap pages of memory from offset to offset+length such that * they a) read as 0, b) Trigger whatever fault mechanism * the OS provides for postcopy. * The pages must be unmapped by the end of the function. * Returns: 0 on success, none-0 on failure * */ -int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length) +int ram_block_discard_range(RAMBlock *rb, uint64_t offset, size_t length) { int ret = -1; - uint8_t *host_startaddr = rb->host + start; + uint8_t *host_startaddr = rb->host + offset; if (!QEMU_PTR_IS_ALIGNED(host_startaddr, rb->page_size)) { error_report("%s: Unaligned start address: %p", @@ -3814,7 +3814,7 @@ int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length) goto err; } - if ((start + length) <= rb->max_length) { + if ((offset + length) <= rb->max_length) { bool need_madvise, need_fallocate; if (!QEMU_IS_ALIGNED(length, rb->page_size)) { error_report("%s: Unaligned length: %zx", __func__, length); @@ -3865,11 +3865,11 @@ int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length) } ret = fallocate(rb->fd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, - start + rb->fd_offset, length); + offset + rb->fd_offset, length); if (ret) { ret = -errno; error_report("%s: Failed to fallocate %s:%" PRIx64 "+%" PRIx64 - " +%zx (%d)", __func__, rb->idstr, start, + " +%zx (%d)", __func__, rb->idstr, offset, rb->fd_offset, length, ret); goto err; } @@ -3877,7 +3877,7 @@ int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length) ret = -ENOSYS; error_report("%s: fallocate not available/file" "%s:%" PRIx64 "+%" PRIx64 " +%zx (%d)", __func__, - rb->idstr, start, rb->fd_offset, length, ret); + rb->idstr, offset, rb->fd_offset, length, ret); goto err; #endif } @@ -3897,13 +3897,13 @@ int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length) ret = -errno; error_report("%s: Failed to discard range " "%s:%" PRIx64 " +%zx (%d)", - __func__, rb->idstr, start, length, ret); + __func__, rb->idstr, offset, length, ret); goto err; } #else ret = -ENOSYS; error_report("%s: MADVISE not available %s:%" PRIx64 " +%zx (%d)", - __func__, rb->idstr, start, length, ret); + __func__, rb->idstr, offset, length, ret); goto err; #endif } @@ -3911,14 +3911,14 @@ int ram_block_discard_range(RAMBlock *rb, uint64_t start, size_t length) need_madvise, need_fallocate, ret); } else { error_report("%s: Overrun block '%s' (%" PRIu64 "/%zx/" RAM_ADDR_FMT")", - __func__, rb->idstr, start, length, rb->max_length); + __func__, rb->idstr, offset, length, rb->max_length); } err: return ret; } -int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t start, +int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t offset, size_t length) { int ret = -1; @@ -3926,17 +3926,17 @@ int ram_block_discard_guest_memfd_range(RAMBlock *rb, uint64_t start, #ifdef CONFIG_FALLOCATE_PUNCH_HOLE /* ignore fd_offset with guest_memfd */ ret = fallocate(rb->guest_memfd, FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE, - start, length); + offset, length); if (ret) { ret = -errno; error_report("%s: Failed to fallocate %s:%" PRIx64 " +%zx (%d)", - __func__, rb->idstr, start, length, ret); + __func__, rb->idstr, offset, length, ret); } #else ret = -ENOSYS; error_report("%s: fallocate not available %s:%" PRIx64 " +%zx (%d)", - __func__, rb->idstr, start, length, ret); + __func__, rb->idstr, offset, length, ret); #endif return ret; |