Changeset 0af7a09 in mainline for kernel/arch/sparc64/src/cpu/cpu.c

Timestamp:

2006-12-21T08:02:01Z (19 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

b84ce45

Parents:

730376d

Message:

sparc64 work:

• No need to lock kernel stack and userspace window buffer into DTLB.

File:

• kernel/arch/sparc64/src/cpu/cpu.c (modified) (2 diffs)

kernel/arch/sparc64/src/cpu/cpu.c

@@ -41 +41 @@
 #include <arch/types.h>
 #include <arch/drivers/tick.h>
-#include <arch/mm/page.h>
-#include <arch/mm/tlb.h>
-#include <macros.h>
 
 /** Perform sparc64 specific initialization of the processor structure for the
@@ -81 +78 @@
         CPU->arch.clock_frequency = clock_frequency;
         tick_init();
-        
-        /*
-         * Lock CPU stack in DTLB.
-         */
-        uintptr_t base = ALIGN_DOWN(config.base, 1 << KERNEL_PAGE_WIDTH);
-                 
-        if (!overlaps((uintptr_t) CPU->stack, PAGE_SIZE, base, (1 <<
-                KERNEL_PAGE_WIDTH))) {
-                /*
-                 * Kernel stack of this processor is not locked in DTLB.
-                 * First, demap any already existing mappings.
-                 * Second, create a locked mapping for it.
-                 */
-                dtlb_demap(TLB_DEMAP_PAGE, TLB_DEMAP_NUCLEUS, (uintptr_t)
-                        CPU->stack);
-                dtlb_insert_mapping((uintptr_t) CPU->stack, KA2PA(CPU->stack),
-                        PAGESIZE_8K, true, true);
-        }
 }