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[PATCH v10 26/59] i386/xen: implement HVMOP_set_param
From: |
David Woodhouse |
Subject: |
[PATCH v10 26/59] i386/xen: implement HVMOP_set_param |
Date: |
Wed, 1 Feb 2023 14:31:15 +0000 |
From: Ankur Arora <ankur.a.arora@oracle.com>
This is the hook for adding the HVM_PARAM_CALLBACK_IRQ parameter in a
subsequent commit.
Signed-off-by: Ankur Arora <ankur.a.arora@oracle.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
[dwmw2: Split out from another commit]
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
---
target/i386/kvm/xen-emu.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c
index 55dc2ac012..67c5832d09 100644
--- a/target/i386/kvm/xen-emu.c
+++ b/target/i386/kvm/xen-emu.c
@@ -489,6 +489,36 @@ static bool kvm_xen_hcall_memory_op(struct kvm_xen_exit
*exit, X86CPU *cpu,
return true;
}
+static bool handle_set_param(struct kvm_xen_exit *exit, X86CPU *cpu,
+ uint64_t arg)
+{
+ CPUState *cs = CPU(cpu);
+ struct xen_hvm_param hp;
+ int err = 0;
+
+ /* No need for 32/64 compat handling */
+ qemu_build_assert(sizeof(hp) == 16);
+
+ if (kvm_copy_from_gva(cs, arg, &hp, sizeof(hp))) {
+ err = -EFAULT;
+ goto out;
+ }
+
+ if (hp.domid != DOMID_SELF && hp.domid != xen_domid) {
+ err = -ESRCH;
+ goto out;
+ }
+
+ switch (hp.index) {
+ default:
+ return false;
+ }
+
+out:
+ exit->u.hcall.result = err;
+ return true;
+}
+
static int kvm_xen_hcall_evtchn_upcall_vector(struct kvm_xen_exit *exit,
X86CPU *cpu, uint64_t arg)
{
@@ -530,6 +560,9 @@ static bool kvm_xen_hcall_hvm_op(struct kvm_xen_exit *exit,
X86CPU *cpu,
ret = -ENOSYS;
break;
+ case HVMOP_set_param:
+ return handle_set_param(exit, cpu, arg);
+
default:
return false;
}
--
2.39.0
- [PATCH v10 07/59] xen-platform: exclude vfio-pci from the PCI platform unplug, (continued)
- [PATCH v10 38/59] hw/xen: Implement EVTCHNOP_reset, David Woodhouse, 2023/02/01
- [PATCH v10 11/59] i386/xen: implement HYPERVISOR_sched_op, SCHEDOP_shutdown, David Woodhouse, 2023/02/01
- [PATCH v10 26/59] i386/xen: implement HVMOP_set_param,
David Woodhouse <=
- [PATCH v10 16/59] i386/xen: manage and save/restore Xen guest long_mode setting, David Woodhouse, 2023/02/01
- [PATCH v10 12/59] i386/xen: Implement SCHEDOP_poll and SCHEDOP_yield, David Woodhouse, 2023/02/01
- [PATCH v10 09/59] i386/xen: handle guest hypercalls, David Woodhouse, 2023/02/01
- [PATCH v10 35/59] hw/xen: Implement EVTCHNOP_alloc_unbound, David Woodhouse, 2023/02/01
[PATCH v10 51/59] hw/xen: Add xen_xenstore device for xenstore emulation, David Woodhouse, 2023/02/01
[PATCH v10 47/59] i386/xen: handle PV timer hypercalls, David Woodhouse, 2023/02/01