Commit graph android_kernel_sony_sdm845/arch/sparc64/lib/NGbzero.S
Message SHA1
[SPARC64]: Fix inconsistent .section usage in lib/
A few places missed the "a" specifier for the __ex_table section. Add
these so we avoid generation an additional section at link time.

Latest modpost would otherwise complain like this:

WARNING: vmlinux.o (__ex_table.2): section name inconsistency.
(.[number]+) following section name.
Did you forget to use "ax"/"aw" in a .S file?
Note that for example <linux/init.h> contains
section definitions for use in .S files.
WARNING: vmlinux.o (__ex_table.4): section name inconsistency.
(.[number]+) following section name.
Did you forget to use "ax"/"aw" in a .S file?
Note that for example <linux/init.h> contains
section definitions for use in .S files.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Sam Ravnborg   authored and   David S. Miller   commited 2008-01-31 19:32:44 -08:00
4787083fcc
[SPARC64]: store-init needs trailing membar.
The manual says that it is required and we actually have crash reports
where loads see stale data due to not having membars here.

In one case the networking does:

	memset(skb, 0, offsetof(struct sk_buff, truesize));

and then some code later checks skb->nohdr for zero, but it's still
the value that was there before the memset().

Note that arch/sparc64/lib/xor.S already got this right.

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2007-03-19 13:27:33 -07:00
24d559cac4
[SPARC64]: Optimized TSB table initialization.
We only need to write an invalid tag every 16 bytes,
so taking advantage of this can save many instructions
compared to the simple memset() call we make now.

A prefetching implementation is implemented for sun4u
and a block-init store version if implemented for Niagara.

The next trick is to be able to perform an init and
a copy_tsb() in parallel when growing a TSB table.

Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2006-03-20 01:16:41 -08:00
bb8646d834
[SPARC64]: Niagara optimized memset/bzero/clear_user.
Signed-off-by: David S. Miller <davem@davemloft.net>

David S. Miller   commited 2006-03-20 01:13:50 -08:00
8ca2557c48