From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Krzysztof Helt" Date: Tue, 13 Jun 2006 06:15:50 +0000 Subject: Odp: vmalloc can clobber framebuffer on sparc32 Message-Id: <448e5816e042a@wp.pl> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable To: sparclinux@vger.kernel.org Dnia 12-06-2006 o godz. 8:43 Bob Breuer napisa=B3(a): > David Miller wrote: > > From: Bob Breuer > > Date: Sun, 11 Jun 2006 20:21:09 -0500 > >=20 > >> David Miller wrote: > >>> But why in the world does the scheduler "lock up" just because the > >>> migration cost is too large? > >> There is an address space collision between the vmalloc area and where > >> the prom maps the framebuffer. > >=20 I run the kernel without the framebuffer (on serial console). I saw many vmalloc warnings trigered in vmap_pte_range() [mm/vmalloc.c line 97].=20 I supposed they were done from measure_one() [kernel/sched.c]. I have only CG6 installed in SS20. I have not the CG14 VRAM. The warnings were triggered from the first call to measure_one(). The calls were done with the smallest size (64K) first so the size should not matter. I hope it helps, Krzysztof. ---------------------------------------------------- CIBELLE na koncertach w Sopocie (23.06) i Warszawie (24.06). Zmys=B3owa bossa nowa, elementy jazzu oraz odrobina elektroniki.=20 http://klik.wp.pl/?adr=3Dhttp%3A%2F%2Fadv.reklama.wp.pl%2Fas%2Fchat_cibelle= .html&sidy2