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vancouver: keep one cap_session

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Cap_sessions and portals created via the sessions are nowadays freed up during
c++ object destruction. Because of that the exception portals for a vCPU thread
get be revoked as soon as the cap_session object leaves its scope.

Keep one cap_session for the whole lifetime of the vmm to avoid disappearing
exception portals.

Related to #582.
This commit is contained in:
Alexander Boettcher 2013-01-15 15:07:23 +01:00 committed by Norman Feske
parent 47cc2f8590
commit b0d23abaa7
1 changed files with 5 additions and 7 deletions
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12
ports/src/vancouver/main.cc
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@ -349,6 +349,8 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
{
private:
Genode::Cap_connection _cap_session;
/**
* Pointer to corresponding VCPU model
*/
@ -794,12 +796,11 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
using namespace Genode;
/* Create the portal at the desired selector index */
Cap_connection conn;
conn.rcv_window(exc_base + EV);
_cap_session.rcv_window(exc_base + EV);
Native_capability thread(tid().ec_sel);
Native_capability handler =
conn.alloc(thread, (Nova::mword_t)portal_entry,
_cap_session.alloc(thread, (Nova::mword_t)portal_entry,
mtd.value());
if (!handler.valid() ||
@ -812,7 +813,6 @@ class Vcpu_dispatcher : public Genode::Thread<STACK_SIZE>,
Vcpu_dispatcher(VCpu *vcpu,
Guest_memory &guest_memory,
Motherboard &motherboard,
Genode::Cap_connection &cap_session,
bool has_svm,
bool has_vmx)
:
@ -1086,11 +1086,9 @@ class Machine : public StaticReceiver<Machine>
if (verbose_debug)
Logging::printf("OP_VCPU_CREATE_BACKEND\n");
static Genode::Cap_connection cap_session;
Vcpu_dispatcher *vcpu_dispatcher =
new Vcpu_dispatcher(msg.vcpu, _guest_memory,
_motherboard, cap_session,
_motherboard,
_hip->has_svm(), _hip->has_vmx());
msg.value = vcpu_dispatcher->sel_sm_ec();