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Replace qemu_real_host_page variables with inlined functions

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Replace the global variables with inlined helper functions. getpagesize() is very
likely annotated with a "const" function attribute (at least with glibc), and thus
optimization should apply even better.

This avoids the need for a constructor initialization too.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220323155743.1585078-12-marcandre.lureau@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marc-André Lureau 2022-03-23 19:57:22 +04:00 • committed by Paolo Bonzini
parent b307e5052d
commit 8e3b0cbb72
53 changed files with 150 additions and 162 deletions
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14
util/vfio-helpers.c
View file

@ -163,7 +163,7 @@ void *qemu_vfio_pci_map_bar(QEMUVFIOState *s, int index,
Error **errp)
{
void *p;
assert(QEMU_IS_ALIGNED(offset, qemu_real_host_page_size));
assert(QEMU_IS_ALIGNED(offset, qemu_real_host_page_size()));
assert_bar_index_valid(s, index);
p = mmap(NULL, MIN(size, s->bar_region_info[index].size - offset),
prot, MAP_SHARED,
@ -591,9 +591,9 @@ static IOVAMapping *qemu_vfio_add_mapping(QEMUVFIOState *s,
IOVAMapping m = {.host = host, .size = size, .iova = iova};
IOVAMapping *insert;
assert(QEMU_IS_ALIGNED(size, qemu_real_host_page_size));
assert(QEMU_IS_ALIGNED(s->low_water_mark, qemu_real_host_page_size));
assert(QEMU_IS_ALIGNED(s->high_water_mark, qemu_real_host_page_size));
assert(QEMU_IS_ALIGNED(size, qemu_real_host_page_size()));
assert(QEMU_IS_ALIGNED(s->low_water_mark, qemu_real_host_page_size()));
assert(QEMU_IS_ALIGNED(s->high_water_mark, qemu_real_host_page_size()));
trace_qemu_vfio_new_mapping(s, host, size, index, iova);
assert(index >= 0);
@ -644,7 +644,7 @@ static void qemu_vfio_undo_mapping(QEMUVFIOState *s, IOVAMapping *mapping,
index = mapping - s->mappings;
assert(mapping->size > 0);
assert(QEMU_IS_ALIGNED(mapping->size, qemu_real_host_page_size));
assert(QEMU_IS_ALIGNED(mapping->size, qemu_real_host_page_size()));
assert(index >= 0 && index < s->nr_mappings);
if (ioctl(s->container, VFIO_IOMMU_UNMAP_DMA, &unmap)) {
error_setg_errno(errp, errno, "VFIO_UNMAP_DMA failed");
@ -752,8 +752,8 @@ int qemu_vfio_dma_map(QEMUVFIOState *s, void *host, size_t size,
IOVAMapping *mapping;
uint64_t iova0;
assert(QEMU_PTR_IS_ALIGNED(host, qemu_real_host_page_size));
assert(QEMU_IS_ALIGNED(size, qemu_real_host_page_size));
assert(QEMU_PTR_IS_ALIGNED(host, qemu_real_host_page_size()));
assert(QEMU_IS_ALIGNED(size, qemu_real_host_page_size()));
trace_qemu_vfio_dma_map(s, host, size, temporary, iova);
QEMU_LOCK_GUARD(&s->lock);
mapping = qemu_vfio_find_mapping(s, host, &index);