49 lines
1.3 KiB
C++
49 lines
1.3 KiB
C++
/*
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* \brief Fiasco-specific part of RM-session 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) 2009-2012 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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/* core includes */
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#include <rm_session_component.h>
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/* Fiasco includes */
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namespace Fiasco {
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#include <l4/sys/syscalls.h>
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#include <l4/sys/types.h>
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}
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using namespace Genode;
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static const bool verbose_unmap = false;
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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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* Fiasco's 'unmap' syscall unmaps the specified flexpage from all address
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* spaces to which we mapped the pages. We cannot target this operation to
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* a specific L4 task. Hence, we unmap the dataspace from all tasks, not
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* only for this RM client.
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*/
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if (verbose_unmap) {
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Fiasco::l4_threadid_t tid; tid.raw = badge();
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printf("RM client %p (%x.%x) unmap core-local [%lx,%lx)\n",
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this, tid.id.task, tid.id.lthread, core_local_base, core_local_base + size);
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}
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using namespace Fiasco;
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addr_t addr = core_local_base;
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for (; addr < core_local_base + size; addr += L4_PAGESIZE)
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l4_fpage_unmap(l4_fpage(addr, L4_LOG2_PAGESIZE, 0, 0),
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L4_FP_FLUSH_PAGE);
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}
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