Messages in this thread |  | | Date | Thu, 15 Nov 2001 21:22:55 +0000 (GMT) | From | Hugh Dickins <> | Subject | Re: [PATCH] small sym-2 fix |
| |
On Thu, 15 Nov 2001, Gérard Roudier wrote: > > To be serious, the right fix is to have some logical page be some power of > two of the physical page when the physical page is too small. Can we hope > Linux-2.5 to allow this?
It's certainly doable. I have an i386 patch against 2.4.7 which did that, MMUPAGE_SIZE 4kB distinguished from PAGE_SIZE 4kB, 8kB, 16kB or 32kB (but 64kB truncates to 0 in unsigned short b_size, doesn't work so well!); while still presenting the 4kB EXEC_PAGESIZE to userspace.
It's a bit tedious working through each kernel update, to decide which PAGEs should be MMUPAGEs etc, and I didn't see an immediate reward of a huge leap in performance, so I haven't kept it up to date since then.
Hugh
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
|  |