summaryrefslogtreecommitdiff
path: root/arch/x86
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/hyperv/hv_init.c31
-rw-r--r--arch/x86/include/asm/hyperv-tlfs.h17
-rw-r--r--arch/x86/include/asm/mshyperv.h13
-rw-r--r--arch/x86/kernel/cpu/mshyperv.c6
4 files changed, 50 insertions, 17 deletions
diff --git a/arch/x86/hyperv/hv_init.c b/arch/x86/hyperv/hv_init.c
index 1ff420217298..20c876c7c5bf 100644
--- a/arch/x86/hyperv/hv_init.c
+++ b/arch/x86/hyperv/hv_init.c
@@ -333,7 +333,7 @@ void __init hyperv_init(void)
* Register Hyper-V specific clocksource.
*/
#ifdef CONFIG_HYPERV_TSCPAGE
- if (ms_hyperv.features & HV_X64_MSR_REFERENCE_TSC_AVAILABLE) {
+ if (ms_hyperv.features & HV_MSR_REFERENCE_TSC_AVAILABLE) {
union hv_x64_msr_hypercall_contents tsc_msr;
tsc_pg = __vmalloc(PAGE_SIZE, GFP_KERNEL, PAGE_KERNEL);
@@ -362,7 +362,7 @@ register_msr_cs:
*/
hyperv_cs = &hyperv_cs_msr;
- if (ms_hyperv.features & HV_X64_MSR_TIME_REF_COUNT_AVAILABLE)
+ if (ms_hyperv.features & HV_MSR_TIME_REF_COUNT_AVAILABLE)
clocksource_register_hz(&hyperv_cs_msr, NSEC_PER_SEC/100);
return;
@@ -426,6 +426,33 @@ void hyperv_report_panic(struct pt_regs *regs, long err)
}
EXPORT_SYMBOL_GPL(hyperv_report_panic);
+/**
+ * hyperv_report_panic_msg - report panic message to Hyper-V
+ * @pa: physical address of the panic page containing the message
+ * @size: size of the message in the page
+ */
+void hyperv_report_panic_msg(phys_addr_t pa, size_t size)
+{
+ /*
+ * P3 to contain the physical address of the panic page & P4 to
+ * contain the size of the panic data in that page. Rest of the
+ * registers are no-op when the NOTIFY_MSG flag is set.
+ */
+ wrmsrl(HV_X64_MSR_CRASH_P0, 0);
+ wrmsrl(HV_X64_MSR_CRASH_P1, 0);
+ wrmsrl(HV_X64_MSR_CRASH_P2, 0);
+ wrmsrl(HV_X64_MSR_CRASH_P3, pa);
+ wrmsrl(HV_X64_MSR_CRASH_P4, size);
+
+ /*
+ * Let Hyper-V know there is crash data available along with
+ * the panic message.
+ */
+ wrmsrl(HV_X64_MSR_CRASH_CTL,
+ (HV_CRASH_CTL_CRASH_NOTIFY | HV_CRASH_CTL_CRASH_NOTIFY_MSG));
+}
+EXPORT_SYMBOL_GPL(hyperv_report_panic_msg);
+
bool hv_is_hyperv_initialized(void)
{
union hv_x64_msr_hypercall_contents hypercall_msr;
diff --git a/arch/x86/include/asm/hyperv-tlfs.h b/arch/x86/include/asm/hyperv-tlfs.h
index b8c89265baf0..6ced78af48da 100644
--- a/arch/x86/include/asm/hyperv-tlfs.h
+++ b/arch/x86/include/asm/hyperv-tlfs.h
@@ -35,9 +35,9 @@
/* VP Runtime (HV_X64_MSR_VP_RUNTIME) available */
#define HV_X64_MSR_VP_RUNTIME_AVAILABLE (1 << 0)
/* Partition Reference Counter (HV_X64_MSR_TIME_REF_COUNT) available*/
-#define HV_X64_MSR_TIME_REF_COUNT_AVAILABLE (1 << 1)
+#define HV_MSR_TIME_REF_COUNT_AVAILABLE (1 << 1)
/* Partition reference TSC MSR is available */
-#define HV_X64_MSR_REFERENCE_TSC_AVAILABLE (1 << 9)
+#define HV_MSR_REFERENCE_TSC_AVAILABLE (1 << 9)
/* A partition's reference time stamp counter (TSC) page */
#define HV_X64_MSR_REFERENCE_TSC 0x40000021
@@ -60,7 +60,7 @@
* Synthetic Timer MSRs (HV_X64_MSR_STIMER0_CONFIG through
* HV_X64_MSR_STIMER3_COUNT) available
*/
-#define HV_X64_MSR_SYNTIMER_AVAILABLE (1 << 3)
+#define HV_MSR_SYNTIMER_AVAILABLE (1 << 3)
/*
* APIC access MSRs (HV_X64_MSR_EOI, HV_X64_MSR_ICR and HV_X64_MSR_TPR)
* are available
@@ -86,7 +86,7 @@
#define HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE (1 << 10)
/* stimer Direct Mode is available */
-#define HV_X64_STIMER_DIRECT_MODE_AVAILABLE (1 << 19)
+#define HV_STIMER_DIRECT_MODE_AVAILABLE (1 << 19)
/*
* Feature identification: EBX indicates which flags were specified at
@@ -160,9 +160,9 @@
#define HV_X64_RELAXED_TIMING_RECOMMENDED (1 << 5)
/*
- * Virtual APIC support
+ * Recommend not using Auto End-Of-Interrupt feature
*/
-#define HV_X64_DEPRECATING_AEOI_RECOMMENDED (1 << 9)
+#define HV_DEPRECATING_AEOI_RECOMMENDED (1 << 9)
/*
* Recommend using cluster IPI hypercalls.
@@ -176,9 +176,10 @@
#define HV_X64_ENLIGHTENED_VMCS_RECOMMENDED (1 << 14)
/*
- * Crash notification flag.
+ * Crash notification flags.
*/
-#define HV_CRASH_CTL_CRASH_NOTIFY (1ULL << 63)
+#define HV_CRASH_CTL_CRASH_NOTIFY_MSG BIT_ULL(62)
+#define HV_CRASH_CTL_CRASH_NOTIFY BIT_ULL(63)
/* MSR used to identify the guest OS. */
#define HV_X64_MSR_GUEST_OS_ID 0x40000000
diff --git a/arch/x86/include/asm/mshyperv.h b/arch/x86/include/asm/mshyperv.h
index 5a7375ed5f7c..406da8d159e3 100644
--- a/arch/x86/include/asm/mshyperv.h
+++ b/arch/x86/include/asm/mshyperv.h
@@ -76,8 +76,10 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
}
}
-#define hv_init_timer(timer, tick) wrmsrl(timer, tick)
-#define hv_init_timer_config(config, val) wrmsrl(config, val)
+#define hv_init_timer(timer, tick) \
+ wrmsrl(HV_X64_MSR_STIMER0_COUNT + (2*timer), tick)
+#define hv_init_timer_config(timer, val) \
+ wrmsrl(HV_X64_MSR_STIMER0_CONFIG + (2*timer), val)
#define hv_get_simp(val) rdmsrl(HV_X64_MSR_SIMP, val)
#define hv_set_simp(val) wrmsrl(HV_X64_MSR_SIMP, val)
@@ -90,8 +92,10 @@ static inline void vmbus_signal_eom(struct hv_message *msg, u32 old_msg_type)
#define hv_get_vp_index(index) rdmsrl(HV_X64_MSR_VP_INDEX, index)
-#define hv_get_synint_state(int_num, val) rdmsrl(int_num, val)
-#define hv_set_synint_state(int_num, val) wrmsrl(int_num, val)
+#define hv_get_synint_state(int_num, val) \
+ rdmsrl(HV_X64_MSR_SINT0 + int_num, val)
+#define hv_set_synint_state(int_num, val) \
+ wrmsrl(HV_X64_MSR_SINT0 + int_num, val)
void hyperv_callback_vector(void);
void hyperv_reenlightenment_vector(void);
@@ -298,6 +302,7 @@ static inline int cpumask_to_vpset(struct hv_vpset *vpset,
void __init hyperv_init(void);
void hyperv_setup_mmu_ops(void);
void hyperv_report_panic(struct pt_regs *regs, long err);
+void hyperv_report_panic_msg(phys_addr_t pa, size_t size);
bool hv_is_hyperv_initialized(void);
void hyperv_cleanup(void);
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 031082c96db8..ad12733f6058 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -41,7 +41,7 @@ static void (*hv_stimer0_handler)(void);
static void (*hv_kexec_handler)(void);
static void (*hv_crash_handler)(struct pt_regs *regs);
-void hyperv_vector_handler(struct pt_regs *regs)
+__visible void __irq_entry hyperv_vector_handler(struct pt_regs *regs)
{
struct pt_regs *old_regs = set_irq_regs(regs);
@@ -50,7 +50,7 @@ void hyperv_vector_handler(struct pt_regs *regs)
if (vmbus_handler)
vmbus_handler();
- if (ms_hyperv.hints & HV_X64_DEPRECATING_AEOI_RECOMMENDED)
+ if (ms_hyperv.hints & HV_DEPRECATING_AEOI_RECOMMENDED)
ack_APIC_irq();
exiting_irq();
@@ -300,7 +300,7 @@ static void __init ms_hyperv_init_platform(void)
hyperv_reenlightenment_vector);
/* Setup the IDT for stimer0 */
- if (ms_hyperv.misc_features & HV_X64_STIMER_DIRECT_MODE_AVAILABLE)
+ if (ms_hyperv.misc_features & HV_STIMER_DIRECT_MODE_AVAILABLE)
alloc_intr_gate(HYPERV_STIMER0_VECTOR,
hv_stimer0_callback_vector);
#endif
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-24 05:41:13 +0300