qemu-kvm/SOURCES/kvm-vfio-Create-shared-routine-for-scanning-info-capabil.patch

80 lines
2.6 KiB
Diff

From f53c2c68db7780353a915072f8c953a74149b1f7 Mon Sep 17 00:00:00 2001
From: Cornelia Huck <cohuck@redhat.com>
Date: Tue, 19 Jan 2021 12:50:42 -0500
Subject: [PATCH 3/7] vfio: Create shared routine for scanning info
capabilities
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
RH-Author: Cornelia Huck <cohuck@redhat.com>
Message-id: <20210119125046.472811-4-cohuck@redhat.com>
Patchwork-id: 100678
O-Subject: [RHEL-8.4.0 qemu-kvm PATCH 3/7] vfio: Create shared routine for scanning info capabilities
Bugzilla: 1905391
RH-Acked-by: David Hildenbrand <david@redhat.com>
RH-Acked-by: Auger Eric <eric.auger@redhat.com>
RH-Acked-by: Thomas Huth <thuth@redhat.com>
From: Matthew Rosato <mjrosato@linux.ibm.com>
Rather than duplicating the same loop in multiple locations,
create a static function to do the work.
Signed-off-by: Matthew Rosato <mjrosato@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
(cherry picked from commit 3ab7a0b40d4be5ade3b61d4afd1518193b199423)
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
hw/vfio/common.c | 21 +++++++++++++--------
1 file changed, 13 insertions(+), 8 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 5ca11488d67..77d62d2dcdf 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -826,17 +826,12 @@ static void vfio_listener_release(VFIOContainer *container)
}
}
-struct vfio_info_cap_header *
-vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id)
+static struct vfio_info_cap_header *
+vfio_get_cap(void *ptr, uint32_t cap_offset, uint16_t id)
{
struct vfio_info_cap_header *hdr;
- void *ptr = info;
-
- if (!(info->flags & VFIO_REGION_INFO_FLAG_CAPS)) {
- return NULL;
- }
- for (hdr = ptr + info->cap_offset; hdr != ptr; hdr = ptr + hdr->next) {
+ for (hdr = ptr + cap_offset; hdr != ptr; hdr = ptr + hdr->next) {
if (hdr->id == id) {
return hdr;
}
@@ -845,6 +840,16 @@ vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id)
return NULL;
}
+struct vfio_info_cap_header *
+vfio_get_region_info_cap(struct vfio_region_info *info, uint16_t id)
+{
+ if (!(info->flags & VFIO_REGION_INFO_FLAG_CAPS)) {
+ return NULL;
+ }
+
+ return vfio_get_cap((void *)info, info->cap_offset, id);
+}
+
static int vfio_setup_region_sparse_mmaps(VFIORegion *region,
struct vfio_region_info *info)
{
--
2.27.0