diff options
| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2015-04-12 22:30:30 +0200 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2015-04-12 22:30:30 +0200 |
| commit | 461c2b68a16ab3314202ec7796fe7eb8a7731f2d (patch) | |
| tree | d2fd155f08d5dff13b6b600db5151da233842347 /sys/src/9/port/sysproc.c | |
| parent | aadbcf0a32c92b1ba4584ad9487854ede43932ca (diff) | |
kernel: fixed segment support (for fpga experiments)
fixed segments are continuous in physical memory but
allocated in user pages. unlike shared segments, they
are not allocated on demand but the pages are allocated
on creation time (devsegment). fixed segments are
never swapped out, segfreed or resized and can only be
destroyed as a whole.
the physical base address can be discovered by userspace
reading the ctl file in devsegment.
Diffstat (limited to 'sys/src/9/port/sysproc.c')
| -rw-r--r-- | sys/src/9/port/sysproc.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/sys/src/9/port/sysproc.c b/sys/src/9/port/sysproc.c index b2e017c12..2dd5fe9e6 100644 --- a/sys/src/9/port/sysproc.c +++ b/sys/src/9/port/sysproc.c @@ -751,6 +751,7 @@ syssegbrk(va_list list) case SG_DATA: case SG_STACK: case SG_PHYSICAL: + case SG_FIXED: error(Ebadarg); default: return (uintptr)ibrk(va_arg(list, uintptr), i); |