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mshv: Use typed hv_stats_page pointers

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Refactor all relevant functions to use struct hv_stats_page pointers
instead of void pointers for stats page mapping and unmapping thus
improving type safety and code clarity across the Hyper-V stats mapping
APIs.

Signed-off-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Signed-off-by: Nuno Das Neves <nunodasneves@linux.microsoft.com>
Acked-by: Stanislav Kinsburskii <skinsburskii@linux.microsoft.com>
Reviewed-by: Michael Kelley <mhklinux@outlook.com>
Signed-off-by: Wei Liu <wei.liu@kernel.org>
This commit is contained in:
Stanislav Kinsburskii 2026-01-28 10:11:41 -08:00 committed by Wei Liu
parent 7538b80e5a
commit 2de4516aa8
3 changed files with 14 additions and 11 deletions
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5
drivers/hv/mshv_root.h
View File

@ -307,8 +307,9 @@ int hv_call_disconnect_port(u64 connection_partition_id,
int hv_call_notify_port_ring_empty(u32 sint_index);
int hv_map_stats_page(enum hv_stats_object_type type,
const union hv_stats_object_identity *identity,
void **addr);
int hv_unmap_stats_page(enum hv_stats_object_type type, void *page_addr,
struct hv_stats_page **addr);
int hv_unmap_stats_page(enum hv_stats_object_type type,
struct hv_stats_page *page_addr,
const union hv_stats_object_identity *identity);
int hv_call_modify_spa_host_access(u64 partition_id, struct page **pages,
u64 page_struct_count, u32 host_access,

12
drivers/hv/mshv_root_hv_call.c
View File

@ -890,9 +890,10 @@ hv_stats_get_area_type(enum hv_stats_object_type type,
* caller should check for this case and instead fallback to the SELF area
* alone.
*/
static int hv_call_map_stats_page(enum hv_stats_object_type type,
const union hv_stats_object_identity *identity,
void **addr)
static int
hv_call_map_stats_page(enum hv_stats_object_type type,
const union hv_stats_object_identity *identity,
struct hv_stats_page **addr)
{
unsigned long flags;
struct hv_input_map_stats_page *input;
@ -942,7 +943,7 @@ static int hv_call_map_stats_page(enum hv_stats_object_type type,
int hv_map_stats_page(enum hv_stats_object_type type,
const union hv_stats_object_identity *identity,
void **addr)
struct hv_stats_page **addr)
{
int ret;
struct page *allocated_page = NULL;
@ -990,7 +991,8 @@ static int hv_call_unmap_stats_page(enum hv_stats_object_type type,
return hv_result_to_errno(status);
}
int hv_unmap_stats_page(enum hv_stats_object_type type, void *page_addr,
int hv_unmap_stats_page(enum hv_stats_object_type type,
struct hv_stats_page *page_addr,
const union hv_stats_object_identity *identity)
{
int ret;

8
drivers/hv/mshv_root_main.c
View File

@ -958,7 +958,7 @@ mshv_vp_release(struct inode *inode, struct file *filp)
}
static void mshv_vp_stats_unmap(u64 partition_id, u32 vp_index,
void *stats_pages[])
struct hv_stats_page *stats_pages[])
{
union hv_stats_object_identity identity = {
.vp.partition_id = partition_id,
@ -973,7 +973,7 @@ static void mshv_vp_stats_unmap(u64 partition_id, u32 vp_index,
}
static int mshv_vp_stats_map(u64 partition_id, u32 vp_index,
void *stats_pages[])
struct hv_stats_page *stats_pages[])
{
union hv_stats_object_identity identity = {
.vp.partition_id = partition_id,
@ -1011,7 +1011,7 @@ mshv_partition_ioctl_create_vp(struct mshv_partition *partition,
struct mshv_create_vp args;
struct mshv_vp *vp;
struct page *intercept_msg_page, *register_page, *ghcb_page;
void *stats_pages[2];
struct hv_stats_page *stats_pages[2];
long ret;
if (copy_from_user(&args, arg, sizeof(args)))
@ -1730,7 +1730,7 @@ static void destroy_partition(struct mshv_partition *partition)
if (hv_scheduler_type == HV_SCHEDULER_TYPE_ROOT)
mshv_vp_stats_unmap(partition->pt_id, vp->vp_index,
(void **)vp->vp_stats_pages);
vp->vp_stats_pages);
if (vp->vp_register_page) {
(void)hv_unmap_vp_state_page(partition->pt_id,