| commit | 238ec4efeee4461d5cff2ed3e5a15a3ab850959b | [log] [tgz] |
|---|---|---|
| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | Mon Oct 25 16:10:07 2010 +0200 |
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | Mon Oct 25 16:10:14 2010 +0200 |
| tree | d9efb4be22cc550c7559c29627a48d66413c645a | |
| parent | 229aebb873e29726b91e076161649cf45154b0bf [diff] |
[S390] zero page cache synonyms If the zero page is mapped to virtual user space addresses that differ only in bit 2^12 or 2^13 we get L1 cache synonyms which can affect performance. Follow the mips model and use multiple zero pages to avoid the synonyms. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>