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[RFC PATCH 10/12] arm/sdei: check KVM cap and enable SDEI
From: |
Heyi Guo |
Subject: |
[RFC PATCH 10/12] arm/sdei: check KVM cap and enable SDEI |
Date: |
Tue, 24 Sep 2019 23:21:49 +0800 |
Check KVM hypercall forward capability and enable it, and set global
flag "sdei_enabled" to true if everything works well.
Signed-off-by: Heyi Guo <address@hidden>
Cc: Peter Maydell <address@hidden>
Cc: Dave Martin <address@hidden>
Cc: Marc Zyngier <address@hidden>
Cc: Mark Rutland <address@hidden>
Cc: James Morse <address@hidden>
---
target/arm/sdei.c | 17 +++++++++++++++++
target/arm/sdei.h | 2 ++
2 files changed, 19 insertions(+)
diff --git a/target/arm/sdei.c b/target/arm/sdei.c
index efdb681..000545e 100644
--- a/target/arm/sdei.c
+++ b/target/arm/sdei.c
@@ -43,6 +43,7 @@
#define TYPE_QEMU_SDEI "qemu_sdei"
#define QEMU_SDEI(obj) OBJECT_CHECK(QemuSDEState, (obj), TYPE_QEMU_SDEI)
+bool sdei_enabled;
static QemuSDEState *sde_state;
typedef struct QemuSDEIBindNotifyEntry {
@@ -1465,6 +1466,7 @@ static const VMStateDescription vmstate_sde_state = {
static void sdei_initfn(Object *obj)
{
QemuSDEState *s = QEMU_SDEI(obj);
+ KVMState *kvm = KVM_STATE(current_machine->accelerator);
if (sde_state) {
error_report("Only one SDEI dispatcher is allowed!");
@@ -1474,6 +1476,21 @@ static void sdei_initfn(Object *obj)
qemu_sde_init(s);
qemu_register_reset(qemu_sde_reset, s);
+
+ if (kvm_check_extension(kvm, KVM_CAP_FORWARD_HYPERCALL)) {
+ int ret;
+ ret = kvm_vm_enable_cap(kvm, KVM_CAP_FORWARD_HYPERCALL, 0,
+ KVM_CAP_FORWARD_HYPERCALL_EXCL_PSCI);
+ if (ret < 0) {
+ error_report("Enable hypercall forwarding failed: %s",
+ strerror(-ret));
+ abort();
+ }
+ sdei_enabled = true;
+ info_report("qemu sdei enabled");
+ } else {
+ info_report("KVM does not support forwarding hypercall.");
+ }
}
static void qemu_sde_class_init(ObjectClass *klass, void *data)
diff --git a/target/arm/sdei.h b/target/arm/sdei.h
index feaaf1a..95e7d8d 100644
--- a/target/arm/sdei.h
+++ b/target/arm/sdei.h
@@ -29,6 +29,8 @@
#define SDEI_MAX_REQ SDEI_1_0_FN(0x12)
+extern bool sdei_enabled;
+
void sdei_handle_request(CPUState *cs, struct kvm_run *run);
/*
--
1.8.3.1
- [RFC PATCH 00/12] Add SDEI support for arm64, Heyi Guo, 2019/09/24
- [RFC PATCH 01/12] linux-headers: import arm_sdei.h, Heyi Guo, 2019/09/24
- [RFC PATCH 10/12] arm/sdei: check KVM cap and enable SDEI,
Heyi Guo <=
- [RFC PATCH 04/12] arm/sdei: add system reset callback, Heyi Guo, 2019/09/24
- [RFC PATCH 06/12] core/irq: add qemu_irq_remove_intercept interface, Heyi Guo, 2019/09/24
- [RFC PATCH 02/12] arm/sdei: add virtual device framework, Heyi Guo, 2019/09/24
- [RFC PATCH 07/12] arm/sdei: override qemu_irq handler when binding interrupt, Heyi Guo, 2019/09/24
- [RFC PATCH 03/12] arm/sdei: add support to handle SDEI requests from guest, Heyi Guo, 2019/09/24
- [RFC PATCH 05/12] arm/sdei: add support to trigger event by GIC interrupt ID, Heyi Guo, 2019/09/24
- [RFC PATCH 09/12] linux-headers/kvm.h: add capability to forward hypercall, Heyi Guo, 2019/09/24
- [RFC PATCH 08/12] arm/sdei: add support to register interrupt bind notifier, Heyi Guo, 2019/09/24
- [RFC PATCH 11/12] arm/kvm: handle guest exit of hypercall, Heyi Guo, 2019/09/24