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authorMichael Kelley <mikelley@microsoft.com>2017-12-22 21:19:02 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-01-09 19:58:41 +0300
commit4a5f3cde4d51c7afce859aed9d74d197751896d5 (patch)
tree2852c1443bb0cd05f2f8066807fac1333c7ca801 /drivers/hv
parentf5cb779ba16334b45ba8946d6bfa6d9834d1527f (diff)
downloadlinux-4a5f3cde4d51c7afce859aed9d74d197751896d5.tar.xz
Drivers: hv: vmbus: Remove x86-isms from arch independent drivers
hv_is_hypercall_page_setup() is used to check if Hyper-V is initialized, but a 'hypercall page' is an x86 implementation detail that isn't necessarily present on other architectures. Rename to the architecture independent hv_is_hyperv_initialized() and add check that x86_hyper is pointing to Hyper-V. Use this function instead of direct references to x86-specific data structures in vmbus_drv.c, and remove now redundant call in hv_init(). Also remove 'x86' from the string name passed to cpuhp_setup_state(). Signed-off-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/hv')
-rw-r--r--drivers/hv/hv.c3
-rw-r--r--drivers/hv/vmbus_drv.c5
2 files changed, 2 insertions, 6 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 8267439dd1ee..fe96aab9e794 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -49,9 +49,6 @@ struct hv_context hv_context = {
*/
int hv_init(void)
{
- if (!hv_is_hypercall_page_setup())
- return -ENOTSUPP;
-
hv_context.cpu_context = alloc_percpu(struct hv_per_cpu_context);
if (!hv_context.cpu_context)
return -ENOMEM;
diff --git a/drivers/hv/vmbus_drv.c b/drivers/hv/vmbus_drv.c
index 610223f0e945..398643bb67e2 100644
--- a/drivers/hv/vmbus_drv.c
+++ b/drivers/hv/vmbus_drv.c
@@ -37,7 +37,6 @@
#include <linux/sched/task_stack.h>
#include <asm/hyperv.h>
-#include <asm/hypervisor.h>
#include <asm/mshyperv.h>
#include <linux/notifier.h>
#include <linux/ptrace.h>
@@ -1053,7 +1052,7 @@ static int vmbus_bus_init(void)
* Initialize the per-cpu interrupt state and
* connect to the host.
*/
- ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "x86/hyperv:online",
+ ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "hyperv/vmbus:online",
hv_synic_init, hv_synic_cleanup);
if (ret < 0)
goto err_alloc;
@@ -1717,7 +1716,7 @@ static int __init hv_acpi_init(void)
{
int ret, t;
- if (x86_hyper_type != X86_HYPER_MS_HYPERV)
+ if (!hv_is_hyperv_initialized())
return -ENODEV;
init_completion(&probe_event);