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vm_session: track dataspaces used by attach

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Track the dataspaces used by attach and add handling of flushing VM space
when dataspace gets destroyed (not triggered via the vm_session interface).

Issue #3111
This commit is contained in:
Alexander Boettcher
2019-04-02 17:41:30 +02:00
committed by Christian Helmuth
parent 169c51d50d
commit 450c8dc149
23 changed files with 556 additions and 216 deletions
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20
repos/base-foc/src/lib/base/x86/vm_session.cc
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@ -191,6 +191,7 @@ struct Vcpu : Genode::Thread
Signal_context_capability _signal;
Semaphore _wake_up { 0 };
Semaphore &_handler_ready;
Allocator &_alloc;
Vm_session_client::Vcpu_id _id;
addr_t _state { 0 };
addr_t _task { 0 };
@ -1137,12 +1138,16 @@ struct Vcpu : Genode::Thread
Vcpu(Env &env, Signal_context_capability &cap,
Semaphore &handler_ready,
Vm_session_client::Vcpu_id &id, enum Virt type)
Vm_session_client::Vcpu_id &id, enum Virt type,
Allocator &alloc)
:
Thread(env, "vcpu_thread", STACK_SIZE), _signal(cap),
_handler_ready(handler_ready), _id(id), _vm_type(type)
_handler_ready(handler_ready), _alloc(alloc),
_id(id), _vm_type(type)
{ }
Allocator &allocator() const { return _alloc; }
bool match(Vm_session_client::Vcpu_id id) { return id.id == _id.id; }
Genode::Vm_session_client::Vcpu_id id() const { return _id; }
@ -1218,7 +1223,8 @@ Vm_session_client::create_vcpu(Allocator &alloc, Env &env,
/* create thread that switches modes between thread/cpu */
Vcpu * vcpu = new (alloc) Registered<Vcpu>(vcpus, env, handler._cap,
handler._done, id, vm_type);
handler._done, id, vm_type,
alloc);
try {
/* now it gets actually valid - vcpu->cap() becomes valid */
@ -1271,3 +1277,11 @@ Dataspace_capability Vm_session_client::cpu_state(Vcpu_id vcpu_id)
return cap;
}
Vm_session::~Vm_session()
{
vcpus.for_each([&] (Vcpu &vc) {
Allocator &alloc = vc.allocator();
destroy(alloc, &vc);
});
}