On Sunday 14 August 2005 03:38, Ingo Molnar wrote:
> * Blaisorblade <[email protected]> wrote:
> > Ok, I've been working for the past two weeks learning well the Linux
> > VM, understanding the Ingo's remap_file_pages protection support and
> > its various weakness (due to lack of time on his part), and splitting
> > and finishing it.
> > Here follow a series of 39 _little_ patches against the git-commit-id
> > 889371f61fd5bb914d0331268f12432590cf7e85, which means between
> > 2.6.13-rc4 and -rc5.
> > Actually, the first 7 ones are unrelated trivial cleanups which
> > somehow get in the way on this work and that can probably be merged
> > even now (many are just comment fixes).
> > Since I was a VM newbie until two weeks ago, I've separated my changes
> > into many little patches.
> hi. Great work! I'm wondering about this comment in
Thanks for your appreciation.
> rfp-fix-unmap-linear.patch:
> > Additionally, add a missing TLB flush in both locations. However,
> > there'is some excess of flushes in these functions.
> excess TLB flushes one of the reasons of bad UML performance, so you
> should really review them and not do spurious TLB flushes.
After a bit of thought I realized that there was no spurious flush in those
function, and that I didn't need to add any, because after setting a PTE as
missing and flushing the TLB, I can freely alter it if I don't make it
present again (right?), without other TLB flushes.
--
Inform me of my mistakes, so I can keep imitating Homer Simpson's "Doh!".
Paolo Giarrusso, aka Blaisorblade (Skype ID "PaoloGiarrusso", ICQ 215621894)
http://www.user-mode-linux.org/~blaisorblade
___________________________________
Yahoo! Messenger: chiamate gratuite in tutto il mondo
http://it.beta.messenger.yahoo.com
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
| |
 |