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base: add support to unconstrain virtual space

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Issue #2507.
This commit is contained in:
Alexander Boettcher 2017-08-23 11:02:12 +02:00 committed by Christian Helmuth
parent 812a0c9eed
commit 830f6934f9
7 changed files with 24 additions and 8 deletions
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7
repos/base/include/pd_session/connection.h
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@ -23,17 +23,18 @@ namespace Genode { struct Pd_connection; }
struct Genode::Pd_connection : Connection<Pd_session>, Pd_session_client
{
enum { RAM_QUOTA = 24*1024*sizeof(long)};
enum Virt_space { UNCONSTRAIN = 0, CONSTRAIN = 1 };
/**
* Constructor
*
* \param label session label
*/
Pd_connection(Env &env, char const *label = "")
Pd_connection(Env &env, char const *label = "", Virt_space space = CONSTRAIN)
:
Connection<Pd_session>(env, session(env.parent(),
"ram_quota=%u, cap_quota=%u, label=\"%s\"",
RAM_QUOTA, CAP_QUOTA, label)),
"ram_quota=%u, cap_quota=%u, label=\"%s\", virt_space=%u",
RAM_QUOTA, CAP_QUOTA, label, space)),
Pd_session_client(cap())
{ }

1
repos/base/src/core/include/core_env.h
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@ -67,6 +67,7 @@ class Genode::Core_env : public Env_deprecated
Session::Diag{false},
*platform()->ram_alloc(),
Ram_dataspace_factory::any_phys_range(),
Ram_dataspace_factory::Virt_range { platform()->vm_start(), platform()->vm_size() },
_region_map,
*((Pager_entrypoint *)nullptr),
"" /* args to native PD */)

12
repos/base/src/core/include/pd_root.h
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@ -44,6 +44,17 @@ class Genode::Pd_root : public Genode::Root_component<Genode::Pd_session_compone
: Ram_dataspace_factory::any_phys_range();
}
static Ram_dataspace_factory::Virt_range _virt_range_from_args(char const *args)
{
addr_t const constrained = Arg_string::find_arg(args, "virt_space").ulong_value(Genode::Pd_connection::Virt_space::CONSTRAIN);
if (!constrained)
return Ram_dataspace_factory::Virt_range { 0x1000, 0UL - 0x2000 };
return Ram_dataspace_factory::Virt_range { platform()->vm_start(),
platform()->vm_size() };
}
protected:
Pd_session_component *_create_session(const char *args)
@ -55,6 +66,7 @@ class Genode::Pd_root : public Genode::Root_component<Genode::Pd_session_compone
session_diag_from_args(args),
_phys_alloc,
_phys_range_from_args(args),
_virt_range_from_args(args),
_local_rm, _pager_ep, args);
}

4
repos/base/src/core/include/pd_session_component.h
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@ -108,6 +108,7 @@ class Genode::Pd_session_component : public Session_object<Pd_session>
public:
typedef Ram_dataspace_factory::Phys_range Phys_range;
typedef Ram_dataspace_factory::Virt_range Virt_range;
/**
* Constructor
@ -118,6 +119,7 @@ class Genode::Pd_session_component : public Session_object<Pd_session>
Diag diag,
Range_allocator &phys_alloc,
Phys_range phys_range,
Virt_range virt_range,
Region_map &local_rm,
Pager_entrypoint &pager_ep,
char const *args)
@ -131,7 +133,7 @@ class Genode::Pd_session_component : public Session_object<Pd_session>
_rpc_cap_factory(_sliced_heap),
_native_pd(*this, args),
_address_space(ep, _sliced_heap, pager_ep,
platform()->vm_start(), platform()->vm_size()),
virt_range.start, virt_range.size),
_stack_area (ep, _sliced_heap, pager_ep, 0, stack_area_virtual_size()),
_linker_area(ep, _sliced_heap, pager_ep, 0, LINKER_AREA_SIZE)
{

3
repos/base/src/core/include/ram_dataspace_factory.h
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@ -33,9 +33,10 @@ class Genode::Ram_dataspace_factory : public Ram_allocator,
public:
struct Phys_range { addr_t start, end; };
static Phys_range any_phys_range() { return { 0UL, ~0UL }; }
struct Virt_range { addr_t start, size; };
/*
* Dimension '_ds_slab' such that slab blocks (including the
* meta-data overhead of the sliced-heap blocks) are page sized.

3
repos/os/src/drivers/platform/spec/x86/device_pd.cc
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@ -64,9 +64,8 @@ void Platform::Device_pd::assign_pci(Genode::Io_mem_dataspace_capability io_mem_
using namespace Genode;
Dataspace_client ds_client(io_mem_cap);
addr_t const phys = ds_client.phys_addr();
addr_t page = _address_space.attach_at(io_mem_cap, phys);
addr_t page = _address_space.attach(io_mem_cap);
/* sanity check */
if (!page)

2
repos/os/src/drivers/platform/spec/x86/device_pd.h
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@ -89,7 +89,7 @@ class Platform::Device_pd
Device_pd(Genode::Env &env,
Genode::Session_label const &label)
:
_pd(env, label.string()),
_pd(env, label.string(), Genode::Pd_connection::Virt_space::UNCONSTRAIN),
_label(label),
_address_space(env, _pd.address_space())
{ }