diff options
Diffstat (limited to 'man2/subpage_prot.2')
| -rw-r--r-- | man2/subpage_prot.2 | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/man2/subpage_prot.2 b/man2/subpage_prot.2 index 56def7506a..9256bccf47 100644 --- a/man2/subpage_prot.2 +++ b/man2/subpage_prot.2 @@ -25,7 +25,7 @@ .\" in kernel commit fa28237cfcc5827553044cbd6ee52e33692b0faa .\" both written by Paul Mackerras <paulus@samba.org> .\" -.TH SUBPAGE_PROT 2 2010-10-30 "Linux" "Linux Programmer's Manual" +.TH SUBPAGE_PROT 2 2012-07-13 "Linux" "Linux Programmer's Manual" .SH NAME subpage_prot \- define a subpage protection for an address range .SH SYNOPSIS @@ -33,6 +33,9 @@ subpage_prot \- define a subpage protection for an address range .BI "long subpage_prot(unsigned long " addr ", unsigned long " len , .BI " uint32_t *" map "); .fi + +.IR Note : +There is no glibc wrapper for this system call; see NOTES. .SH DESCRIPTION The PowerPC-specific .BR subpage_prot () @@ -91,6 +94,9 @@ No library support is provided. .SH CONFORMING TO This system call is Linux-specific. .SH NOTES +Glibc does not provide a wrapper for this system call; call it using +.BR syscall (2). + Normal page protections (at the 64-kB page level) also apply; the subpage protection mechanism is an additional constraint, so putting 0 in a 2-bit field won't allow writes to a page that is otherwise |