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fix REQ-2, REQ-6, REQ-8

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This commit is contained in:
Tomoki Shirasawa
2016-02-23 16:32:17 +09:00
parent ebce1cb031
commit 863a5c5e5f
10 changed files with 99 additions and 74 deletions
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19
kernel/host.c
View File

@@ -398,16 +398,19 @@ static int process_msg_prepare_process(unsigned long rphys)
vm->region.user_start = pn->user_start;
vm->region.user_end = pn->user_end;
/* TODO: review this code
if(vm->region.user_end > USER_END)
vm->region.user_end = USER_END;
vm->region.map_start =
(vm->region.user_start +
(vm->region.user_end - vm->region.user_start) / 3) &
LARGE_PAGE_MASK;
*/
vm->region.map_start = (USER_END / 3) & LARGE_PAGE_MASK;
vm->region.map_end = proc->vm->region.map_start;
if(vm->region.user_start != 0UL ||
vm->region.user_end < TASK_UNMAPPED_BASE){
vm->region.map_start =
(vm->region.user_start +
(vm->region.user_end - vm->region.user_start) / 3) &
LARGE_PAGE_MASK;
}
else{
vm->region.map_start = TASK_UNMAPPED_BASE;
}
vm->region.map_end = vm->region.map_start;
memcpy(proc->rlimit, pn->rlimit, sizeof(struct rlimit) * MCK_RLIM_MAX);
/* TODO: Clear it at the proper timing */

54
kernel/include/futex.h
View File

@@ -99,6 +99,8 @@
#ifdef __KERNEL__
#define __user
/* We don't deal with uaccess at the moment, because x86 can access
* userspace directly, we rely on glibc and the app developers.
*/
@@ -106,42 +108,14 @@
#include <arch/uaccess.h>
#endif
#include <asm.h>
#include <errno.h>
#define __user
#include <arch-futex.h>
#if 0
#include <arch/processor.h>
#include <arch/system.h>
#endif
#define __futex_atomic_op1(insn, ret, oldval, uaddr, oparg) \
asm volatile("1:\t" insn "\n" \
"2:\t.section .fixup,\"ax\"\n" \
"3:\tmov\t%3, %1\n" \
"\tjmp\t2b\n" \
"\t.previous\n" \
_ASM_EXTABLE(1b, 3b) \
: "=r" (oldval), "=r" (ret), "+m" (*uaddr) \
: "i" (-EFAULT), "0" (oparg), "1" (0))
#define __futex_atomic_op2(insn, ret, oldval, uaddr, oparg) \
asm volatile("1:\tmovl %2, %0\n" \
"\tmovl\t%0, %3\n" \
"\t" insn "\n" \
"2:\tlock; cmpxchgl %3, %2\n" \
"\tjnz\t1b\n" \
"3:\t.section .fixup,\"ax\"\n" \
"4:\tmov\t%5, %1\n" \
"\tjmp\t3b\n" \
"\t.previous\n" \
_ASM_EXTABLE(1b, 4b) \
_ASM_EXTABLE(2b, 4b) \
: "=&a" (oldval), "=&r" (ret), \
"+m" (*uaddr), "=&r" (tem) \
: "r" (oparg), "i" (-EFAULT), "1" (0))
static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
{
int op = (encoded_op >> 28) & 7;
@@ -206,28 +180,6 @@ static inline int futex_atomic_op_inuser(int encoded_op, int __user *uaddr)
return ret;
}
static inline int futex_atomic_cmpxchg_inatomic(int __user *uaddr, int oldval,
int newval)
{
#ifdef __UACCESS__
if (!access_ok(VERIFY_WRITE, uaddr, sizeof(int)))
return -EFAULT;
#endif
asm volatile("1:\tlock; cmpxchgl %3, %1\n"
"2:\t.section .fixup, \"ax\"\n"
"3:\tmov %2, %0\n"
"\tjmp 2b\n"
"\t.previous\n"
_ASM_EXTABLE(1b, 3b)
: "=a" (oldval), "+m" (*uaddr)
: "i" (-EFAULT), "r" (newval), "0" (oldval)
: "memory"
);
return oldval;
}
#endif // __KERNEL__
#endif // _ASM_X86_FUTEX_H

11
kernel/listeners.c
View File

@@ -17,6 +17,7 @@
#include <ihk/debug.h>
#include <ihk/ikc.h>
#include <ikc/master.h>
#include <arch/cpu.h>
//#define DEBUG_LISTENERS
@@ -28,16 +29,6 @@
#define ekprintf(...) kprintf(__VA_ARGS__)
#endif
static unsigned long read_tsc(void)
{
unsigned int low, high;
asm volatile("rdtsc" : "=a"(low), "=d"(high));
return (low | ((unsigned long)high << 32));
}
void testmem(void *v, unsigned long size)
{
unsigned long i, st, ed, s = 0;

3
kernel/process.c
View File

@@ -1701,7 +1701,7 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
int s_ind = 0;
int arg_ind;
unsigned long size;
unsigned long end = thread->vm->region.user_end;
unsigned long end;
unsigned long start;
int rc;
unsigned long vrflag;
@@ -1713,6 +1713,7 @@ int init_process_stack(struct thread *thread, struct program_load_desc *pn,
struct process *proc = thread->proc;
/* create stack range */
end = STACK_TOP(&thread->vm->region);
minsz = PAGE_SIZE;
size = proc->rlimit[MCK_RLIMIT_STACK].rlim_cur & PAGE_MASK;
if (size > (USER_END / 2)) {