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-rw-r--r--arch/um/include/sysdep-i386/kernel-offsets.h2
-rw-r--r--arch/um/include/sysdep-x86_64/kernel-offsets.h2
-rw-r--r--arch/um/os-Linux/process.c4
3 files changed, 6 insertions, 2 deletions
diff --git a/arch/um/include/sysdep-i386/kernel-offsets.h b/arch/um/include/sysdep-i386/kernel-offsets.h
index 82f96c574144..2c13de321f2f 100644
--- a/arch/um/include/sysdep-i386/kernel-offsets.h
+++ b/arch/um/include/sysdep-i386/kernel-offsets.h
@@ -1,6 +1,7 @@
1#include <linux/stddef.h> 1#include <linux/stddef.h>
2#include <linux/sched.h> 2#include <linux/sched.h>
3#include <linux/elf.h> 3#include <linux/elf.h>
4#include <asm/mman.h>
4 5
5#define DEFINE(sym, val) \ 6#define DEFINE(sym, val) \
6 asm volatile("\n->" #sym " %0 " #val : : "i" (val)) 7 asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -16,6 +17,7 @@
16void foo(void) 17void foo(void)
17{ 18{
18 OFFSET(HOST_TASK_DEBUGREGS, task_struct, thread.arch.debugregs); 19 OFFSET(HOST_TASK_DEBUGREGS, task_struct, thread.arch.debugregs);
20 DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE);
19#ifdef CONFIG_MODE_TT 21#ifdef CONFIG_MODE_TT
20 OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid); 22 OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
21#endif 23#endif
diff --git a/arch/um/include/sysdep-x86_64/kernel-offsets.h b/arch/um/include/sysdep-x86_64/kernel-offsets.h
index 5ce93abd0b54..939cc475757a 100644
--- a/arch/um/include/sysdep-x86_64/kernel-offsets.h
+++ b/arch/um/include/sysdep-x86_64/kernel-offsets.h
@@ -4,6 +4,7 @@
4#include <linux/time.h> 4#include <linux/time.h>
5#include <linux/elf.h> 5#include <linux/elf.h>
6#include <asm/page.h> 6#include <asm/page.h>
7#include <asm/mman.h>
7 8
8#define DEFINE(sym, val) \ 9#define DEFINE(sym, val) \
9 asm volatile("\n->" #sym " %0 " #val : : "i" (val)) 10 asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -18,6 +19,7 @@
18 19
19void foo(void) 20void foo(void)
20{ 21{
22 DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE);
21#ifdef CONFIG_MODE_TT 23#ifdef CONFIG_MODE_TT
22 OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid); 24 OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
23#endif 25#endif
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 8176b0b52047..2064e8400d94 100644
--- a/arch/um/os-Linux/process.c
+++ b/arch/um/os-Linux/process.c
@@ -190,7 +190,7 @@ int os_unmap_memory(void *addr, int len)
190} 190}
191 191
192#ifndef MADV_REMOVE 192#ifndef MADV_REMOVE
193#define MADV_REMOVE 0x5 /* remove these pages & resources */ 193#define MADV_REMOVE KERNEL_MADV_REMOVE
194#endif 194#endif
195 195
196int os_drop_memory(void *addr, int length) 196int os_drop_memory(void *addr, int length)
@@ -216,7 +216,7 @@ int can_drop_memory(void)
216 } 216 }
217 217
218 addr = mmap64(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE, 218 addr = mmap64(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
219 MAP_PRIVATE, fd, 0); 219 MAP_SHARED, fd, 0);
220 if(addr == MAP_FAILED){ 220 if(addr == MAP_FAILED){
221 printk("Mapping test memory file failed, err = %d\n", -errno); 221 printk("Mapping test memory file failed, err = %d\n", -errno);
222 return 0; 222 return 0;