CacheRangeFlush

Other versions of this page are also available for the following:

• Windows Embedded CE 6.0 R3

8/28/2008

This function is called by device drivers and applications to flush a specified range of the cache.

Syntax

void CacheRangeFlush(
  LPVOID pAddr,
  DWORD dwLength,
  DWORD dwFlags
);

Parameters

• pAddr
  [in] Starting virtual address where the cache operation is to be performed in. The cache operation is specified by the value in dwFlags.

• dwLength
  [in] Specifies the length, in bytes.

• dwFlags
  [in] Specifies the operation to be performed. The following table shows possible values.

  Value	Description
  CACHE_SYNC_ALL	Perform all of the above operations.
  CACHE_SYNC_DISCARD	Write back and discard cached data.
  CACHE_SYNC_FLUSH_D_TLB	Flush the data TLB.
  CACHE_SYNC_FLUSH_I_TLB	Flush the instruction translation look-aside buffer (TLB).
  CACHE_SYNC_FLUSH_TLB	Flush both the instruction TLB and the data TLB.
  CACHE_SYNC_INSTRUCTIONS	Discard all cached instructions.
  CACHE_SYNC_L2_DISCARD	Write back and discard the L2 cache.
  CACHE_SYNC_L2_WRITEBACK	Write back the L2 cache.
  CACHE_SYNC_WRITEBACK	Write back cached data.

Return Value

None.

Remarks

If pAddr and dwLength are set to zero, this applies to all addresses. For example, the call CacheRangeFlush(0, 0, CACHE_SYNC_FLUSH_TLB) flushes the data in the TLB. CacheRangeFlush(0, 0, CACHE_SYNC_DISCARD) writes back and discards everything in the data cache.

Requirements

See Also

Reference

Kernel Functions

Other Resources

OEMCacheRangeFlush