Changeset 8b420fa in mainline for kernel/arch/sparc64/include

Timestamp:

2016-06-08T21:41:43Z (10 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

741b2fb1

Parents:

7510326

Message:

Make explicitly sure the userspace window buffer is properly aligned

Do not rely on the implementation of kernel malloc() to assure this.
Instead, create a dedicated slab cache with the proper alignment for
its objects and allocate UWB's from there.

Location:

kernel/arch/sparc64/include/arch

Files:

• proc/thread.h (modified) (1 diff)
• trap/regwin.h (modified) (1 diff)

kernel/arch/sparc64/include/arch/proc/thread.h

@@ -38 +38 @@
 #include <typedefs.h>
 #include <arch/arch.h>
+#include <mm/slab.h>
+
+extern slab_cache_t *uwb_cache;
 
 typedef struct {

kernel/arch/sparc64/include/arch/trap/regwin.h

@@ -77 +77 @@
 #define UWB_SIZE        ((NWINDOWS - 1) * STACK_WINDOW_SAVE_AREA_SIZE)
 #define UWB_ALIGNMENT   1024
-#define UWB_ASIZE       ALIGN_UP(UWB_SIZE, UWB_ALIGNMENT)
 
 #ifdef __ASM__