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[RFC PATCH 09/12] linux-headers/kvm.h: add capability to forward hyperca
From: |
Heyi Guo |
Subject: |
[RFC PATCH 09/12] linux-headers/kvm.h: add capability to forward hypercall |
Date: |
Tue, 24 Sep 2019 23:21:48 +0800 |
To keep backward compatibility, we add new KVM capability
"KVM_CAP_FORWARD_HYPERCALL" to probe whether KVM supports forwarding
hypercall to userspace.
The capability should be enabled explicitly, for we don't want user
space application to deal with unexpected hypercall exits. We also use
an additional argument to pass exception bit mask, to request KVM to
forward all hypercalls except the classes specified in the bit mask.
Currently only PSCI can be set as exception, so that we can still keep
consistent with the original PSCI processing flow.
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>
Cc: "Michael S. Tsirkin" <address@hidden>
Cc: Cornelia Huck <address@hidden>
Cc: Paolo Bonzini <address@hidden>
---
linux-headers/linux/kvm.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h
index 18892d6..20e8a68 100644
--- a/linux-headers/linux/kvm.h
+++ b/linux-headers/linux/kvm.h
@@ -711,6 +711,8 @@ struct kvm_enable_cap {
__u8 pad[64];
};
+#define KVM_CAP_FORWARD_HYPERCALL_EXCL_PSCI (1 << 0)
+
/* for KVM_PPC_GET_PVINFO */
#define KVM_PPC_PVINFO_FLAGS_EV_IDLE (1<<0)
@@ -995,6 +997,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_ARM_SVE 170
#define KVM_CAP_ARM_PTRAUTH_ADDRESS 171
#define KVM_CAP_ARM_PTRAUTH_GENERIC 172
+#define KVM_CAP_FORWARD_HYPERCALL 174
#ifdef KVM_CAP_IRQ_ROUTING
--
1.8.3.1
- Re: [RFC PATCH 01/12] linux-headers: import arm_sdei.h, (continued)
- [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 10/12] arm/sdei: check KVM cap and enable SDEI, 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 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 11/12] arm/kvm: handle guest exit of hypercall, Heyi Guo, 2019/09/24
- [RFC PATCH 12/12] virt/acpi: add SDEI table if SDEI is enabled, Heyi Guo, 2019/09/24
- [RFC PATCH 09/12] linux-headers/kvm.h: add capability to forward hypercall,
Heyi Guo <=
- [RFC PATCH 08/12] arm/sdei: add support to register interrupt bind notifier, Heyi Guo, 2019/09/24
- [RFC PATCH 03/12] arm/sdei: add support to handle SDEI requests from guest, Heyi Guo, 2019/09/24
- Re: [RFC PATCH 00/12] Add SDEI support for arm64, no-reply, 2019/09/25
- Re: [RFC PATCH 00/12] Add SDEI support for arm64, no-reply, 2019/09/25
- Re: [RFC PATCH 00/12] Add SDEI support for arm64, Peter Maydell, 2019/09/30