21de42c45d
The new core-internal 'Address_space' interface enables cores RM service to flush mappings of a PD in which a given 'Rm_client' thread resides. Prior this patch, each platform invented their own way to flush mappings in the respective 'rm_session_support.cc' implementation. However, those implementations used to deal poorly with some corner cases. In particular, if a PD session was destroyed prior a RM session, the RM session would try to use no longer existing PD session. The new 'Address_space' uses the just added weak-pointer mechanism to deal with this issue. Furthermore, the generic 'Rm_session_component::detach' function has been improved to avoid duplicated unmap operations for platforms that implement the 'Address_space' interface. Therefore, it is related to issue #595. Right now, this is OKL4 only, but other platforms will follow.
34 lines
863 B
C++
34 lines
863 B
C++
/*
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* \brief Interface for flushing mapping from a protection domain
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* \author Norman Feske
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* \date 2013-03-07
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*/
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/*
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* Copyright (C) 2013 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU General Public License version 2.
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*/
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#ifndef _CORE__INCLUDE__ADDRESS_SPACE_H_
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#define _CORE__INCLUDE__ADDRESS_SPACE_H_
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#include <base/stdint.h>
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#include <lifetime.h>
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namespace Genode { struct Address_space; }
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struct Genode::Address_space : Genode::Volatile_object<Genode::Address_space>
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{
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/**
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* Flush memory mappings of virtual address range
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*
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* \param virt_addr start address of range to flush
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* \param size size of range in bytes, must be a multiple of page size
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*/
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virtual void flush(addr_t virt_addr, size_t size) = 0;
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};
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#endif /* _CORE__INCLUDE__ADDRESS_SPACE_H_ */
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