Changeset 635 for trunk/hal/x86_64

Timestamp:

Jun 26, 2019, 11:42:37 AM (5 years ago)

Author:

alain

Message:

This version is a major evolution: The physical memory allocators,
defined in the kmem.c, ppm.c, and kcm.c files have been modified
to support remote accesses. The RPCs that were previously user
to allocate physical memory in a remote cluster have been removed.
This has been done to cure a dead-lock in case of concurrent page-faults.

This version 2.2 has been tested on a (4 clusters / 2 cores per cluster)
TSAR architecture, for both the "sort" and the "fft" applications.

File:

• trunk/hal/x86_64/core/hal_gpt.c (modified) (2 diffs)

trunk/hal/x86_64/core/hal_gpt.c

@@ -282 +282 @@
         /* allocate a physical page for L4 */
         kmem_req_t req;
-        req.type  = KMEM_PAGE;
+        req.type  = KMEM_PPM;
         req.size  = 1;
         req.flags = AF_KERNEL | AF_ZERO;
@@ -330 +330 @@
         xptr_t page_xp;
 
-        req.type  = KMEM_PAGE;
+        req.type  = KMEM_PPM;
         req.size  = 0;
         req.flags = AF_KERNEL | AF_ZERO;