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[PATCH v5 08/15] vfio/common: Add helper to consolidate iova/end calcula
From: |
Joao Martins |
Subject: |
[PATCH v5 08/15] vfio/common: Add helper to consolidate iova/end calculation |
Date: |
Tue, 7 Mar 2023 12:54:43 +0000 |
In preparation to be used in device dirty tracking, move the code that
calculate a iova/end range from the container/section. This avoids
duplication on the common checks across listener callbacks.
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
---
hw/vfio/common.c | 41 +++++++++++++++++++++++++++--------------
1 file changed, 27 insertions(+), 14 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index d38b7c1969b9..63831eab78a1 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -962,6 +962,31 @@ static bool
vfio_listener_valid_section(MemoryRegionSection *section,
return true;
}
+static bool vfio_get_section_iova_range(VFIOContainer *container,
+ MemoryRegionSection *section,
+ hwaddr *out_iova, hwaddr *out_end,
+ Int128 *out_llend)
+{
+ Int128 llend;
+ hwaddr iova;
+
+ iova = REAL_HOST_PAGE_ALIGN(section->offset_within_address_space);
+ llend = int128_make64(section->offset_within_address_space);
+ llend = int128_add(llend, section->size);
+ llend = int128_and(llend, int128_exts64(qemu_real_host_page_mask()));
+
+ if (int128_ge(int128_make64(iova), llend)) {
+ return false;
+ }
+
+ *out_iova = iova;
+ *out_end = int128_get64(int128_sub(llend, int128_one()));
+ if (out_llend) {
+ *out_llend = llend;
+ }
+ return true;
+}
+
static void vfio_listener_region_add(MemoryListener *listener,
MemoryRegionSection *section)
{
@@ -977,12 +1002,7 @@ static void vfio_listener_region_add(MemoryListener
*listener,
return;
}
- iova = REAL_HOST_PAGE_ALIGN(section->offset_within_address_space);
- llend = int128_make64(section->offset_within_address_space);
- llend = int128_add(llend, section->size);
- llend = int128_and(llend, int128_exts64(qemu_real_host_page_mask()));
-
- if (int128_ge(int128_make64(iova), llend)) {
+ if (!vfio_get_section_iova_range(container, section, &iova, &end, &llend))
{
if (memory_region_is_ram_device(section->mr)) {
trace_vfio_listener_region_add_no_dma_map(
memory_region_name(section->mr),
@@ -992,7 +1012,6 @@ static void vfio_listener_region_add(MemoryListener
*listener,
}
return;
}
- end = int128_get64(int128_sub(llend, int128_one()));
if (container->iommu_type == VFIO_SPAPR_TCE_v2_IOMMU) {
hwaddr pgsize = 0;
@@ -1219,15 +1238,9 @@ static void vfio_listener_region_del(MemoryListener
*listener,
*/
}
- iova = REAL_HOST_PAGE_ALIGN(section->offset_within_address_space);
- llend = int128_make64(section->offset_within_address_space);
- llend = int128_add(llend, section->size);
- llend = int128_and(llend, int128_exts64(qemu_real_host_page_mask()));
-
- if (int128_ge(int128_make64(iova), llend)) {
+ if (!vfio_get_section_iova_range(container, section, &iova, &end, &llend))
{
return;
}
- end = int128_get64(int128_sub(llend, int128_one()));
llsize = int128_sub(llend, int128_make64(iova));
--
2.17.2
- [PATCH v5 00/15] vfio/migration: Device dirty page tracking, Joao Martins, 2023/03/07
- [PATCH v5 01/15] vfio/common: Fix error reporting in vfio_get_dirty_bitmap(), Joao Martins, 2023/03/07
- [PATCH v5 02/15] vfio/common: Fix wrong %m usages, Joao Martins, 2023/03/07
- [PATCH v5 03/15] vfio/common: Abort migration if dirty log start/stop/sync fails, Joao Martins, 2023/03/07
- [PATCH v5 04/15] vfio/common: Add VFIOBitmap and alloc function, Joao Martins, 2023/03/07
- [PATCH v5 05/15] vfio/common: Add helper to validate iova/end against hostwin, Joao Martins, 2023/03/07
- [PATCH v5 06/15] vfio/common: Use a single tracepoint for skipped sections, Joao Martins, 2023/03/07
- [PATCH v5 07/15] vfio/common: Consolidate skip/invalid section into helper, Joao Martins, 2023/03/07
- [PATCH v5 08/15] vfio/common: Add helper to consolidate iova/end calculation,
Joao Martins <=
- [PATCH v5 09/15] vfio/common: Record DMA mapped IOVA ranges, Joao Martins, 2023/03/07
- [PATCH v5 10/15] vfio/common: Add device dirty page tracking start/stop, Joao Martins, 2023/03/07
- [PATCH v5 11/15] vfio/common: Extract code from vfio_get_dirty_bitmap() to new function, Joao Martins, 2023/03/07
- [PATCH v5 12/15] vfio/common: Add device dirty page bitmap sync, Joao Martins, 2023/03/07
- [PATCH v5 13/15] vfio/migration: Block migration with vIOMMU, Joao Martins, 2023/03/07