* Copyright 2010, Ingo Weinhold, ingo_weinhold@gmx.de.
* Distributed under the terms of the MIT License.
*/
#ifndef KERNEL_ARCH_X86_X86_VM_TRANSLATION_MAP_H
#define KERNEL_ARCH_X86_X86_VM_TRANSLATION_MAP_H
#include <vm/VMTranslationMap.h>
#define PAGE_INVALIDATE_CACHE_SIZE 64
struct X86PagingStructures;
class TranslationMapPhysicalPageMapper;
struct X86VMTranslationMap : VMTranslationMap {
X86VMTranslationMap();
virtual ~X86VMTranslationMap();
status_t Init(bool kernel);
virtual bool Lock() final;
virtual void Unlock() final;
virtual addr_t MappedSize() const final;
virtual void Flush() final;
virtual X86PagingStructures* PagingStructures() const = 0;
inline void InvalidatePage(addr_t address);
protected:
TranslationMapPhysicalPageMapper* fPageMapper;
int fInvalidPagesCount;
addr_t fInvalidPages[PAGE_INVALIDATE_CACHE_SIZE];
bool fIsKernelMap;
};
void
X86VMTranslationMap::InvalidatePage(addr_t address)
{
if (fInvalidPagesCount < PAGE_INVALIDATE_CACHE_SIZE)
fInvalidPages[fInvalidPagesCount] = address;
fInvalidPagesCount++;
}
#endif
