Due to the hypercall page not being allocated in the VTL mode,
the code resorts to using a part of the input page.
Allocate the hypercall output page in the VTL mode thus enabling
it to use it for output and share code with dom0.
Signed-off-by: Roman Kisel <romank@xxxxxxxxxxxxxxxxxxx>
---
drivers/hv/hv_common.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/hv/hv_common.c b/drivers/hv/hv_common.c
index c6ed3ba4bf61..c983cfd4d6c0 100644
--- a/drivers/hv/hv_common.c
+++ b/drivers/hv/hv_common.c
@@ -340,7 +340,7 @@ int __init hv_common_init(void)
BUG_ON(!hyperv_pcpu_input_arg);
/* Allocate the per-CPU state for output arg for root */
- if (hv_root_partition) {
+ if (hv_root_partition || IS_ENABLED(CONFIG_HYPERV_VTL_MODE)) {
hyperv_pcpu_output_arg = alloc_percpu(void *);
BUG_ON(!hyperv_pcpu_output_arg);
}
@@ -435,7 +435,7 @@ int hv_common_cpu_init(unsigned int cpu)
void **inputarg, **outputarg;
u64 msr_vp_index;
gfp_t flags;
- int pgcount = hv_root_partition ? 2 : 1;
+ const int pgcount = (hv_root_partition || IS_ENABLED(CONFIG_HYPERV_VTL_MODE)) ? 2 : 1;
void *mem;
int ret;
@@ -453,7 +453,7 @@ int hv_common_cpu_init(unsigned int cpu)
if (!mem)
return -ENOMEM;
- if (hv_root_partition) {
+ if (hv_root_partition || IS_ENABLED(CONFIG_HYPERV_VTL_MODE)) {
outputarg = (void **)this_cpu_ptr(hyperv_pcpu_output_arg);
*outputarg = (char *)mem + HV_HYP_PAGE_SIZE;
}
--
2.34.1
