summaryrefslogtreecommitdiff
path: root/drivers/hv/hv.c
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/hv/hv.c')
-rw-r--r--drivers/hv/hv.c79
1 files changed, 37 insertions, 42 deletions
diff --git a/drivers/hv/hv.c b/drivers/hv/hv.c
index 51e5018ac9b2..36d9ba097ff5 100644
--- a/drivers/hv/hv.c
+++ b/drivers/hv/hv.c
@@ -45,8 +45,8 @@ int hv_init(void)
* This involves a hypercall.
*/
int hv_post_message(union hv_connection_id connection_id,
- enum hv_message_type message_type,
- void *payload, size_t payload_size)
+ enum hv_message_type message_type,
+ void *payload, size_t payload_size)
{
struct hv_input_post_message *aligned_msg;
unsigned long flags;
@@ -86,7 +86,7 @@ int hv_post_message(union hv_connection_id connection_id,
status = HV_STATUS_INVALID_PARAMETER;
} else {
status = hv_do_hypercall(HVCALL_POST_MESSAGE,
- aligned_msg, NULL);
+ aligned_msg, NULL);
}
local_irq_restore(flags);
@@ -111,7 +111,7 @@ int hv_synic_alloc(void)
hv_context.hv_numa_map = kcalloc(nr_node_ids, sizeof(struct cpumask),
GFP_KERNEL);
- if (hv_context.hv_numa_map == NULL) {
+ if (!hv_context.hv_numa_map) {
pr_err("Unable to allocate NUMA map\n");
goto err;
}
@@ -120,11 +120,11 @@ int hv_synic_alloc(void)
hv_cpu = per_cpu_ptr(hv_context.cpu_context, cpu);
tasklet_init(&hv_cpu->msg_dpc,
- vmbus_on_msg_dpc, (unsigned long) hv_cpu);
+ vmbus_on_msg_dpc, (unsigned long)hv_cpu);
if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
hv_cpu->post_msg_page = (void *)get_zeroed_page(GFP_ATOMIC);
- if (hv_cpu->post_msg_page == NULL) {
+ if (!hv_cpu->post_msg_page) {
pr_err("Unable to allocate post msg page\n");
goto err;
}
@@ -147,14 +147,14 @@ int hv_synic_alloc(void)
if (!ms_hyperv.paravisor_present && !hv_root_partition) {
hv_cpu->synic_message_page =
(void *)get_zeroed_page(GFP_ATOMIC);
- if (hv_cpu->synic_message_page == NULL) {
+ if (!hv_cpu->synic_message_page) {
pr_err("Unable to allocate SYNIC message page\n");
goto err;
}
hv_cpu->synic_event_page =
(void *)get_zeroed_page(GFP_ATOMIC);
- if (hv_cpu->synic_event_page == NULL) {
+ if (!hv_cpu->synic_event_page) {
pr_err("Unable to allocate SYNIC event page\n");
free_page((unsigned long)hv_cpu->synic_message_page);
@@ -203,14 +203,13 @@ err:
return ret;
}
-
void hv_synic_free(void)
{
int cpu, ret;
for_each_present_cpu(cpu) {
- struct hv_per_cpu_context *hv_cpu
- = per_cpu_ptr(hv_context.cpu_context, cpu);
+ struct hv_per_cpu_context *hv_cpu =
+ per_cpu_ptr(hv_context.cpu_context, cpu);
/* It's better to leak the page if the encryption fails. */
if (ms_hyperv.paravisor_present && hv_isolation_type_tdx()) {
@@ -262,23 +261,23 @@ void hv_synic_free(void)
*/
void hv_synic_enable_regs(unsigned int cpu)
{
- struct hv_per_cpu_context *hv_cpu
- = per_cpu_ptr(hv_context.cpu_context, cpu);
+ struct hv_per_cpu_context *hv_cpu =
+ per_cpu_ptr(hv_context.cpu_context, cpu);
union hv_synic_simp simp;
union hv_synic_siefp siefp;
union hv_synic_sint shared_sint;
union hv_synic_scontrol sctrl;
/* Setup the Synic's message page */
- simp.as_uint64 = hv_get_register(HV_REGISTER_SIMP);
+ simp.as_uint64 = hv_get_msr(HV_MSR_SIMP);
simp.simp_enabled = 1;
if (ms_hyperv.paravisor_present || hv_root_partition) {
/* Mask out vTOM bit. ioremap_cache() maps decrypted */
u64 base = (simp.base_simp_gpa << HV_HYP_PAGE_SHIFT) &
~ms_hyperv.shared_gpa_boundary;
- hv_cpu->synic_message_page
- = (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
+ hv_cpu->synic_message_page =
+ (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
if (!hv_cpu->synic_message_page)
pr_err("Fail to map synic message page.\n");
} else {
@@ -286,18 +285,18 @@ void hv_synic_enable_regs(unsigned int cpu)
>> HV_HYP_PAGE_SHIFT;
}
- hv_set_register(HV_REGISTER_SIMP, simp.as_uint64);
+ hv_set_msr(HV_MSR_SIMP, simp.as_uint64);
/* Setup the Synic's event page */
- siefp.as_uint64 = hv_get_register(HV_REGISTER_SIEFP);
+ siefp.as_uint64 = hv_get_msr(HV_MSR_SIEFP);
siefp.siefp_enabled = 1;
if (ms_hyperv.paravisor_present || hv_root_partition) {
/* Mask out vTOM bit. ioremap_cache() maps decrypted */
u64 base = (siefp.base_siefp_gpa << HV_HYP_PAGE_SHIFT) &
~ms_hyperv.shared_gpa_boundary;
- hv_cpu->synic_event_page
- = (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
+ hv_cpu->synic_event_page =
+ (void *)ioremap_cache(base, HV_HYP_PAGE_SIZE);
if (!hv_cpu->synic_event_page)
pr_err("Fail to map synic event page.\n");
} else {
@@ -305,13 +304,12 @@ void hv_synic_enable_regs(unsigned int cpu)
>> HV_HYP_PAGE_SHIFT;
}
- hv_set_register(HV_REGISTER_SIEFP, siefp.as_uint64);
+ hv_set_msr(HV_MSR_SIEFP, siefp.as_uint64);
/* Setup the shared SINT. */
if (vmbus_irq != -1)
enable_percpu_irq(vmbus_irq, 0);
- shared_sint.as_uint64 = hv_get_register(HV_REGISTER_SINT0 +
- VMBUS_MESSAGE_SINT);
+ shared_sint.as_uint64 = hv_get_msr(HV_MSR_SINT0 + VMBUS_MESSAGE_SINT);
shared_sint.vector = vmbus_interrupt;
shared_sint.masked = false;
@@ -326,14 +324,13 @@ void hv_synic_enable_regs(unsigned int cpu)
#else
shared_sint.auto_eoi = 0;
#endif
- hv_set_register(HV_REGISTER_SINT0 + VMBUS_MESSAGE_SINT,
- shared_sint.as_uint64);
+ hv_set_msr(HV_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
/* Enable the global synic bit */
- sctrl.as_uint64 = hv_get_register(HV_REGISTER_SCONTROL);
+ sctrl.as_uint64 = hv_get_msr(HV_MSR_SCONTROL);
sctrl.enable = 1;
- hv_set_register(HV_REGISTER_SCONTROL, sctrl.as_uint64);
+ hv_set_msr(HV_MSR_SCONTROL, sctrl.as_uint64);
}
int hv_synic_init(unsigned int cpu)
@@ -345,29 +342,24 @@ int hv_synic_init(unsigned int cpu)
return 0;
}
-/*
- * hv_synic_cleanup - Cleanup routine for hv_synic_init().
- */
void hv_synic_disable_regs(unsigned int cpu)
{
- struct hv_per_cpu_context *hv_cpu
- = per_cpu_ptr(hv_context.cpu_context, cpu);
+ struct hv_per_cpu_context *hv_cpu =
+ per_cpu_ptr(hv_context.cpu_context, cpu);
union hv_synic_sint shared_sint;
union hv_synic_simp simp;
union hv_synic_siefp siefp;
union hv_synic_scontrol sctrl;
- shared_sint.as_uint64 = hv_get_register(HV_REGISTER_SINT0 +
- VMBUS_MESSAGE_SINT);
+ shared_sint.as_uint64 = hv_get_msr(HV_MSR_SINT0 + VMBUS_MESSAGE_SINT);
shared_sint.masked = 1;
/* Need to correctly cleanup in the case of SMP!!! */
/* Disable the interrupt */
- hv_set_register(HV_REGISTER_SINT0 + VMBUS_MESSAGE_SINT,
- shared_sint.as_uint64);
+ hv_set_msr(HV_MSR_SINT0 + VMBUS_MESSAGE_SINT, shared_sint.as_uint64);
- simp.as_uint64 = hv_get_register(HV_REGISTER_SIMP);
+ simp.as_uint64 = hv_get_msr(HV_MSR_SIMP);
/*
* In Isolation VM, sim and sief pages are allocated by
* paravisor. These pages also will be used by kdump
@@ -382,9 +374,9 @@ void hv_synic_disable_regs(unsigned int cpu)
simp.base_simp_gpa = 0;
}
- hv_set_register(HV_REGISTER_SIMP, simp.as_uint64);
+ hv_set_msr(HV_MSR_SIMP, simp.as_uint64);
- siefp.as_uint64 = hv_get_register(HV_REGISTER_SIEFP);
+ siefp.as_uint64 = hv_get_msr(HV_MSR_SIEFP);
siefp.siefp_enabled = 0;
if (ms_hyperv.paravisor_present || hv_root_partition) {
@@ -394,12 +386,12 @@ void hv_synic_disable_regs(unsigned int cpu)
siefp.base_siefp_gpa = 0;
}
- hv_set_register(HV_REGISTER_SIEFP, siefp.as_uint64);
+ hv_set_msr(HV_MSR_SIEFP, siefp.as_uint64);
/* Disable the global synic bit */
- sctrl.as_uint64 = hv_get_register(HV_REGISTER_SCONTROL);
+ sctrl.as_uint64 = hv_get_msr(HV_MSR_SCONTROL);
sctrl.enable = 0;
- hv_set_register(HV_REGISTER_SCONTROL, sctrl.as_uint64);
+ hv_set_msr(HV_MSR_SCONTROL, sctrl.as_uint64);
if (vmbus_irq != -1)
disable_percpu_irq(vmbus_irq);
@@ -441,6 +433,9 @@ retry:
return pending;
}
+/*
+ * hv_synic_cleanup - Cleanup routine for hv_synic_init().
+ */
int hv_synic_cleanup(unsigned int cpu)
{
struct vmbus_channel *channel, *sc;
generated by cgit (git 2.34.1) at 2025-07-25 18:54:19 +0000