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[PATCH v1 03/15] vhost: Add vhost_get_max_memslots()
From: |
David Hildenbrand |
Subject: |
[PATCH v1 03/15] vhost: Add vhost_get_max_memslots() |
Date: |
Fri, 16 Jun 2023 11:26:42 +0200 |
Let's add vhost_get_max_memslots(), to perform a similar task as
kvm_get_max_memslots().
Signed-off-by: David Hildenbrand <david@redhat.com>
---
hw/virtio/vhost-stub.c | 5 +++++
hw/virtio/vhost.c | 11 +++++++++++
include/hw/virtio/vhost.h | 1 +
3 files changed, 17 insertions(+)
diff --git a/hw/virtio/vhost-stub.c b/hw/virtio/vhost-stub.c
index c175148fce..2722af5580 100644
--- a/hw/virtio/vhost-stub.c
+++ b/hw/virtio/vhost-stub.c
@@ -2,6 +2,11 @@
#include "hw/virtio/vhost.h"
#include "hw/virtio/vhost-user.h"
+unsigned int vhost_get_max_memslots(void)
+{
+ return UINT_MAX;
+}
+
bool vhost_has_free_slot(void)
{
return true;
diff --git a/hw/virtio/vhost.c b/hw/virtio/vhost.c
index b2c1646ca4..4b912709e8 100644
--- a/hw/virtio/vhost.c
+++ b/hw/virtio/vhost.c
@@ -55,6 +55,17 @@ static unsigned int used_shared_memslots;
static QLIST_HEAD(, vhost_dev) vhost_devices =
QLIST_HEAD_INITIALIZER(vhost_devices);
+unsigned int vhost_get_max_memslots(void)
+{
+ unsigned int max = UINT_MAX;
+ struct vhost_dev *hdev;
+
+ QLIST_FOREACH(hdev, &vhost_devices, entry) {
+ max = MIN(max, hdev->vhost_ops->vhost_backend_memslots_limit(hdev));
+ }
+ return max;
+}
+
bool vhost_has_free_slot(void)
{
unsigned int free = UINT_MAX;
diff --git a/include/hw/virtio/vhost.h b/include/hw/virtio/vhost.h
index f7f10c8fb7..fb8fdf07f9 100644
--- a/include/hw/virtio/vhost.h
+++ b/include/hw/virtio/vhost.h
@@ -315,6 +315,7 @@ uint64_t vhost_get_features(struct vhost_dev *hdev, const
int *feature_bits,
*/
void vhost_ack_features(struct vhost_dev *hdev, const int *feature_bits,
uint64_t features);
+unsigned int vhost_get_max_memslots(void);
bool vhost_has_free_slot(void);
int vhost_net_set_backend(struct vhost_dev *hdev,
--
2.40.1
- [PATCH v1 00/15] virtio-mem: Expose device memory through multiple memslots, David Hildenbrand, 2023/06/16
- [PATCH v1 01/15] memory-device: Track the required memslots in DeviceMemoryState, David Hildenbrand, 2023/06/16
- [PATCH v1 02/15] kvm: Add stub for kvm_get_max_memslots(), David Hildenbrand, 2023/06/16
- [PATCH v1 03/15] vhost: Add vhost_get_max_memslots(),
David Hildenbrand <=
- [PATCH v1 04/15] memory-device, vhost: Add a memslot soft limit for memory devices, David Hildenbrand, 2023/06/16
- [PATCH v1 05/15] kvm: Return number of free memslots, David Hildenbrand, 2023/06/16
- [PATCH v1 06/15] vhost: Return number of free memslots, David Hildenbrand, 2023/06/16
- [PATCH v1 07/15] memory-device: Support memory devices that statically consume multiple memslots, David Hildenbrand, 2023/06/16
- [PATCH v1 08/15] memory-device: Track the actually used memslots in DeviceMemoryState, David Hildenbrand, 2023/06/16
- [PATCH v1 09/15] memory-device, vhost: Support memory devices that dynamically consume multiple memslots, David Hildenbrand, 2023/06/16
- [PATCH v1 10/15] pc-dimm: Provide pc_dimm_get_free_slots() to query free ram slots, David Hildenbrand, 2023/06/16
- [PATCH v1 11/15] memory-device: Support memory-devices with auto-detection of the number of memslots, David Hildenbrand, 2023/06/16
- [PATCH v1 12/15] memory: Clarify mapping requirements for RamDiscardManager, David Hildenbrand, 2023/06/16
- [PATCH v1 13/15] virtio-mem: Expose device memory via multiple memslots if enabled, David Hildenbrand, 2023/06/16