diff mbox series

[RFC,11/12] arm/kvm: handle guest exit of hypercall

Message ID 1569338511-3572-12-git-send-email-guoheyi@huawei.com (mailing list archive)
State New, archived
Headers show
Series Add SDEI support for arm64 | expand

Commit Message

Heyi Guo Sept. 24, 2019, 3:21 p.m. UTC 
Add support to handle guest exit of hypercall, and forward to SDEI
dispatcher if SDEI is enabled and it is an SDEI request.

Signed-off-by: Heyi Guo <guoheyi@huawei.com>
Cc: Peter Maydell <peter.maydell@linaro.org>
Cc: Dave Martin <Dave.Martin@arm.com>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: James Morse <james.morse@arm.com>
---
 target/arm/kvm.c | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)
diff mbox series

Patch

diff --git a/target/arm/kvm.c b/target/arm/kvm.c
index b2eaa50..97a67b1 100644
--- a/target/arm/kvm.c
+++ b/target/arm/kvm.c
@@ -30,6 +30,7 @@ 
 #include "hw/boards.h"
 #include "hw/irq.h"
 #include "qemu/log.h"
+#include "sdei.h"
 
 const KVMCapabilityInfo kvm_arch_required_capabilities[] = {
     KVM_CAP_LAST_INFO
@@ -668,6 +669,19 @@  MemTxAttrs kvm_arch_post_run(CPUState *cs, struct kvm_run *run)
 }
 
 
+static void kvm_arm_handle_hypercall(CPUState *cs, struct kvm_run *run)
+{
+    uint32_t func_id = run->hypercall.args[0];
+
+    if (sdei_enabled &&
+        func_id >= SDEI_1_0_FN_BASE && func_id <= SDEI_MAX_REQ) {
+        sdei_handle_request(cs, run);
+    } else {
+        run->hypercall.args[0] = -1;
+    }
+}
+
+
 int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
 {
     int ret = 0;
@@ -678,6 +692,9 @@  int kvm_arch_handle_exit(CPUState *cs, struct kvm_run *run)
             ret = EXCP_DEBUG;
         } /* otherwise return to guest */
         break;
+    case KVM_EXIT_HYPERCALL:
+        kvm_arm_handle_hypercall(cs, run);
+        break;
     default:
         qemu_log_mask(LOG_UNIMP, "%s: un-handled exit reason %d\n",
                       __func__, run->exit_reason);