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mcctrl: use zap_page_range() instead of madvise()

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NAKAMURA Gou
2016-02-24 21:14:48 +09:00
parent a713c2fcaa
commit 2601d8a36f
3 changed files with 19 additions and 12 deletions
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23
executer/kernel/mcctrl/syscall.c
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@ -44,6 +44,7 @@
#include <asm/uaccess.h>
#include <asm/delay.h>
#include <asm/io.h>
#include "config.h"
#include "mcctrl.h"
#include <linux/version.h>
@ -57,6 +58,17 @@
#define dprintk(...)
#endif
#ifdef MCCTRL_KSYM_zap_page_range
static void
(*mcctrl_zap_page_range)(struct vm_area_struct *vma, unsigned long start,
unsigned long size, struct zap_details *details)
#if MCCTRL_KSYM_zap_page_range
= (void *)MCCTRL_KSYM_zap_page_range;
#else
= &zap_page_range;
#endif
#endif
static long pager_call(ihk_os_t os, struct syscall_request *req);
#ifdef SC_DEBUG
@ -1516,6 +1528,10 @@ static int clear_pte_range(uintptr_t start, uintptr_t len)
}
if (addr < end) {
error = zap_vma_ptes(vma, addr, end-addr);
if (error) {
mcctrl_zap_page_range(vma, addr, end-addr, NULL);
error = 0;
}
if (ret == 0) {
ret = error;
}
@ -1663,12 +1679,7 @@ int __do_in_kernel_syscall(ihk_os_t os, struct mcctrl_channel *c, struct syscall
ppd->pid, ppd->rpgtable);
}
error = clear_pte_range(sc->args[0], sc->args[1]);
if (error) {
error = -ENOSYS;
goto out;
}
ret = 0;
ret = clear_pte_range(sc->args[0], sc->args[1]);
break;
case __NR_mprotect: