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Mem: Fill out the comment that describes the LOCKED request flag.

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This commit is contained in:
Gabe Black 2009-04-19 22:00:24 -07:00
parent bd6f2bb538
commit 9e9a34fed1
1 changed files with 6 additions and 1 deletions
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7
src/mem/request.hh
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@ -75,7 +75,12 @@ class Request : public FastAlloc
static const FlagsType NO_FAULT = 0x00002000;
/** The request should not cause a memory access. */
static const FlagsType NO_ACCESS = 0x00004000;
/** This request will lock or unlock the accessed memory. */
/** This request will lock or unlock the accessed memory. When used with
* a load, the access locks the particular chunk of memory. When used
* with a store, it unlocks. The rule is that locked accesses have to be
* made up of a locked load, some operation on the data, and then a locked
* store.
*/
static const FlagsType LOCKED = 0x00008000;
/** The request should be prefetched into the exclusive state. */
static const FlagsType PF_EXCLUSIVE = 0x00010000;