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For some reason gcc-3.4.5 on sparc64 does: WARNING: "____ilog2_NaN" [drivers/infiniband/hw/mthca/ib_mthca.ko] undefined! Points to note: (1) The asm volatile flush/flushw are just markers for viewing what comes out in the assembly; removing them has no effect on the result. (2) Changing almost anything else in dwh__mthca_arbel_init_srq_context() or dwh__mthca_alloc_srq() causes the problem to go away. The compiler command line issued by the kernel build is: /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/bin/sparc64-unknown-linux-gnu-gcc -fno-strict-aliasing -fno-common -Os -m64 -mno-fpu -mcpu=ultrasparc -mcmodel=medlow -ffixed-g4 -ffixed-g5 -fcall-used-g7 -Wa,--undeclared-regs -pg -fno-omit-frame-pointer -fno-optimize-sibling-calls -fasynchronous-unwind-tables -g -c -o drivers/infiniband/hw/mthca/.tmp_mthca_srq.o drivers/infiniband/hw/mthca/mthca_srq.c This can be reduced to this whilst still retaining the problem: /opt/crosstool/gcc-3.4.5-glibc-2.3.6/sparc64-unknown-linux-gnu/bin/sparc64-unknown-linux-gnu-gcc -m64 -c -o drivers/infiniband/hw/mthca/mthca_srq.o drivers/infiniband/hw/mthca/mthca_srq.c -Os Removing -Os or changing it to -O or -O0 thru -O6 gets rid of the problem. This patch to the kernel code fixes the problem: Cc: "David S. Miller" <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Roland Dreier <rolandd@cisco.com> |
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.. | ||
Kconfig | ||
Makefile | ||
mthca_allocator.c | ||
mthca_av.c | ||
mthca_catas.c | ||
mthca_cmd.c | ||
mthca_cmd.h | ||
mthca_config_reg.h | ||
mthca_cq.c | ||
mthca_dev.h | ||
mthca_doorbell.h | ||
mthca_eq.c | ||
mthca_mad.c | ||
mthca_main.c | ||
mthca_mcg.c | ||
mthca_memfree.c | ||
mthca_memfree.h | ||
mthca_mr.c | ||
mthca_pd.c | ||
mthca_profile.c | ||
mthca_profile.h | ||
mthca_provider.c | ||
mthca_provider.h | ||
mthca_qp.c | ||
mthca_reset.c | ||
mthca_srq.c | ||
mthca_uar.c | ||
mthca_user.h | ||
mthca_wqe.h |