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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 82f96c57414..2c13de321f2 100644
--- a/arch/um/include/sysdep-i386/kernel-offsets.h
+++ b/arch/um/include/sysdep-i386/kernel-offsets.h
@@ -1,6 +1,7 @@
#include <linux/stddef.h>
#include <linux/sched.h>
#include <linux/elf.h>
+#include <asm/mman.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -16,6 +17,7 @@
void foo(void)
{
OFFSET(HOST_TASK_DEBUGREGS, task_struct, thread.arch.debugregs);
+ DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE);
#ifdef CONFIG_MODE_TT
OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
#endif
diff --git a/arch/um/include/sysdep-x86_64/kernel-offsets.h b/arch/um/include/sysdep-x86_64/kernel-offsets.h
index 5ce93abd0b5..939cc475757 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 @@
#include <linux/time.h>
#include <linux/elf.h>
#include <asm/page.h>
+#include <asm/mman.h>
#define DEFINE(sym, val) \
asm volatile("\n->" #sym " %0 " #val : : "i" (val))
@@ -18,6 +19,7 @@
void foo(void)
{
+ DEFINE(KERNEL_MADV_REMOVE, MADV_REMOVE);
#ifdef CONFIG_MODE_TT
OFFSET(HOST_TASK_EXTERN_PID, task_struct, thread.mode.tt.extern_pid);
#endif
diff --git a/arch/um/os-Linux/process.c b/arch/um/os-Linux/process.c
index 8176b0b5204..2064e8400d9 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)
}
#ifndef MADV_REMOVE
-#define MADV_REMOVE 0x5 /* remove these pages & resources */
+#define MADV_REMOVE KERNEL_MADV_REMOVE
#endif
int os_drop_memory(void *addr, int length)
@@ -216,7 +216,7 @@ int can_drop_memory(void)
}
addr = mmap64(NULL, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE,
- MAP_PRIVATE, fd, 0);
+ MAP_SHARED, fd, 0);
if(addr == MAP_FAILED){
printk("Mapping test memory file failed, err = %d\n", -errno);
return 0;