46 lines
1.1 KiB
C++
46 lines
1.1 KiB
C++
/*
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* \brief Pistachio-specific part of region-map implementation
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* \author Norman Feske
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* \date 2009-04-10
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*/
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/*
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* Copyright (C) 2009-2013 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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#include <base/printf.h>
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/* core includes */
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#include <rm_session_component.h>
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/* Pistachio includes */
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namespace Pistachio {
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#include <l4/types.h>
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#include <l4/space.h>
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}
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using namespace Genode;
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void Rm_client::unmap(addr_t core_local_base, addr_t virt_base, size_t size)
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{
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/*
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* Pistachio's 'unmap' syscall unmaps the specified flexpage from all
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* address spaces to which we mapped the pages. We cannot target this
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* operation to a specific L4 task. Hence, we unmap the dataspace from
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* all tasks, not only for this RM client.
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*/
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using namespace Pistachio;
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L4_Word_t page_size = get_page_size();
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addr_t addr = core_local_base;
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for (; addr < core_local_base + size; addr += page_size) {
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L4_Fpage_t fp = L4_Fpage(addr, page_size);
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L4_Unmap(L4_FpageAddRightsTo(&fp, L4_FullyAccessible));
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}
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}
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