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Ensure the restartable atomic sequence is in userland, for real.

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This commit is contained in:
maxv 2016-07-01 12:49:22 +00:00
parent ce6ad8e69c
commit 5852a7fce9
1 changed files with 10 additions and 14 deletions
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24
sys/kern/kern_ras.c
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@ -1,4 +1,4 @@
/* $NetBSD: kern_ras.c,v 1.36 2013/09/14 20:46:27 martin Exp $ */
/* $NetBSD: kern_ras.c,v 1.37 2016/07/01 12:49:22 maxv Exp $ */
/*-
* Copyright (c) 2002, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: kern_ras.c,v 1.36 2013/09/14 20:46:27 martin Exp $");
__KERNEL_RCSID(0, "$NetBSD: kern_ras.c,v 1.37 2016/07/01 12:49:22 maxv Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -197,18 +197,19 @@ ras_install(void *addr, size_t len)
int nras, error;
proc_t *p;
if (len == 0)
return EINVAL;
endaddr = (char *)addr + len;
/* do not warn about < NULL pointer comparision */
/* Do not warn about < NULL pointer comparison */
__WARNING_PUSH_LESS_NULL_PTR
if (addr < (void *)VM_MIN_ADDRESS ||
endaddr > (void *)VM_MAXUSER_ADDRESS)
return (EINVAL);
if (addr < (void *)VM_MIN_ADDRESS || addr > (void *)VM_MAXUSER_ADDRESS)
return EINVAL;
if (endaddr < addr)
return EINVAL;
__WARNING_POP_LESS_NULL_PTR
if (len <= 0)
return (EINVAL);
newrp = kmem_alloc(sizeof(*newrp), KM_SLEEP);
newrp->ras_startaddr = addr;
newrp->ras_endaddr = endaddr;
@ -278,7 +279,6 @@ ras_purge(void *addr, size_t len)
int
sys_rasctl(struct lwp *l, const struct sys_rasctl_args *uap, register_t *retval)
{
#if defined(__HAVE_RAS)
/* {
syscallarg(void *) addr;
@ -317,11 +317,7 @@ sys_rasctl(struct lwp *l, const struct sys_rasctl_args *uap, register_t *retval)
}
return (error);
#else
return (EOPNOTSUPP);
#endif
}