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| author | Jack Steiner | 2009-04-03 01:59:12 +0200 |
|---|---|---|
| committer | Linus Torvalds | 2009-04-03 04:05:07 +0200 |
| commit | 7b8274e93fbabc7534aa51f95551c30aecdd0066 (patch) | |
| tree | f1cfc0e87b07a4094ee06d2dc73673635b4b1775 /drivers/misc/sgi-gru/grufault.c | |
| parent | sgi-gru: fix bugs related to module unload of the GRU driver (diff) | |
| download | kernel-qcow2-linux-7b8274e93fbabc7534aa51f95551c30aecdd0066.tar.gz kernel-qcow2-linux-7b8274e93fbabc7534aa51f95551c30aecdd0066.tar.xz kernel-qcow2-linux-7b8274e93fbabc7534aa51f95551c30aecdd0066.zip | |
sgi-gru: support multiple pagesizes in GRU
Add multiple pagesize support to the GRU driver.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-gru/grufault.c')
| -rw-r--r-- | drivers/misc/sgi-gru/grufault.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/grufault.c b/drivers/misc/sgi-gru/grufault.c index 15507d31e62b..ab118558552e 100644 --- a/drivers/misc/sgi-gru/grufault.c +++ b/drivers/misc/sgi-gru/grufault.c @@ -360,6 +360,13 @@ static int gru_try_dropin(struct gru_thread_state *gts, if (ret == -2) goto failupm; + if (!(gts->ts_sizeavail & GRU_SIZEAVAIL(pageshift))) { + gts->ts_sizeavail |= GRU_SIZEAVAIL(pageshift); + if (atomic || !gru_update_cch(gts, 0)) { + gts->ts_force_cch_reload = 1; + goto failupm; + } + } gru_cb_set_istatus_active(cb); tfh_write_restart(tfh, gpa, GAA_RAM, vaddr, asid, write, GRU_PAGESIZE(pageshift)); @@ -535,6 +542,14 @@ int gru_handle_user_call_os(unsigned long cb) gts->ts_force_unload = 1; } + /* + * CCH may contain stale data if ts_force_cch_reload is set. + */ + if (gts->ts_gru && gts->ts_force_cch_reload) { + gru_update_cch(gts, 0); + gts->ts_force_cch_reload = 0; + } + ret = -EAGAIN; cbrnum = thread_cbr_number(gts, ucbnum); if (gts->ts_force_unload) { |