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  • Anton Anton anjo
1 author
  1. May 19, 2017
  3. Jan 24, 2017
    • Marek Vasut's avatar
      nios2: Add support for Nios-II R1 · e671711c
      Marek Vasut authored 
      
Add remaining bits of the Altera NiosII R1 support into qemu, which
is documentation, MAINTAINERS file entry, configure bits, arch_init
and configuration files for both linux-user (userland binaries) and
softmmu (hardware emulation).

Signed-off-by: default avatarMarek Vasut <marex@denx.de>
Cc: Chris Wulff <crwulff@gmail.com>
Cc: Jeff Da Silva <jdasilva@altera.com>
Cc: Ley Foon Tan <lftan@altera.com>
Cc: Sandra Loosemore <sandra@codesourcery.com>
Cc: Yves Vandervennet <yvanderv@altera.com>
Reviewed-by: default avatarAlexander Graf <agraf@suse.de>
Message-Id: <20170118220146.489-8-marex@denx.de>
Signed-off-by: default avatarRichard Henderson <rth@twiddle.net>
      e671711c
  5. Jan 23, 2017
  7. Jan 16, 2017
  9. Sep 23, 2016
    • Fam Zheng's avatar
      util: Add UUID API · cea25275
      Fam Zheng authored 
      
A number of different places across the code base use CONFIG_UUID. Some
of them are soft dependency, some are not built if libuuid is not
available, some come with dummy fallback, some throws runtime error.

It is hard to maintain, and hard to reason for users.

Since UUID is a simple standard with only a small number of operations,
it is cleaner to have a central support in libqemuutil. This patch adds
qemu_uuid_* functions that all uuid users in the code base can
rely on. Except for qemu_uuid_generate which is new code, all other
functions are just copy from existing fallbacks from other files.

Note that qemu_uuid_parse is moved without updating the function
signature to use QemuUUID, to keep this patch simple.

Signed-off-by: default avatarFam Zheng <famz@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Reviewed-by: default avatarJeff Cody <jcody@redhat.com>
Message-Id: <1474432046-325-2-git-send-email-famz@redhat.com>
      cea25275
  11. May 23, 2016
  13. May 19, 2016
  15. Mar 22, 2016
  17. Feb 04, 2016
    • Peter Maydell's avatar
      all: Clean up includes · d38ea87a
      Peter Maydell authored 
      
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.

This commit was created with scripts/clean-includes.

Signed-off-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Message-id: 1454089805-5470-16-git-send-email-peter.maydell@linaro.org
      d38ea87a
  19. Jan 13, 2016
    • Markus Armbruster's avatar
      error: Use error_reportf_err() where it makes obvious sense · c29b77f9
      Markus Armbruster authored 
      
Done with this Coccinelle semantic patch

    @@
    expression FMT, E, S;
    expression list ARGS;
    @@
    -    error_report(FMT, ARGS, error_get_pretty(E));
    +    error_reportf_err(E, FMT/*@@@*/, ARGS);
    (
    -    error_free(E);
    |
	 exit(S);
    |
	 abort();
    )

followed by a replace of '%s"/*@@@*/' by '"' and some line rewrapping,
because I can't figure out how to make Coccinelle transform strings.

We now use the error whole instead of just its message obtained with
error_get_pretty().  This avoids suppressing its hint (see commit
50b7b000), but I can't see how the errors touched in this commit could
come with hints.

Signed-off-by: default avatarMarkus Armbruster <armbru@redhat.com>
Message-Id: <1450452927-8346-12-git-send-email-armbru@redhat.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
      c29b77f9
  21. Aug 13, 2015
  23. Jun 12, 2015
  25. Jun 05, 2015
  27. Jun 02, 2015
  29. May 07, 2015
  31. May 06, 2015
  33. Mar 26, 2015
  35. Mar 17, 2015
  37. Mar 16, 2015
  39. Feb 18, 2015
  41. Feb 16, 2015
  43. Jan 15, 2015
    • ChenLiang's avatar
      xbzrle: optimize XBZRLE to decrease the cache misses · 27af7d6e
      ChenLiang authored 
      
Avoid hot pages being replaced by others to remarkably decrease cache
misses

Sample results with the test program which quote from xbzrle.txt ran in
vm:(migrate bandwidth:1GE and xbzrle cache size 8MB)

the test program:

include <stdlib.h>
include <stdio.h>
int main()
 {
        char *buf = (char *) calloc(4096, 4096);
        while (1) {
            int i;
            for (i = 0; i < 4096 * 4; i++) {
                buf[i * 4096 / 4]++;
            }
            printf(".");
        }
 }

before this patch:
virsh qemu-monitor-command test_vm '{"execute": "query-migrate"}'
{"return":{"expected-downtime":1020,"xbzrle-cache":{"bytes":1108284,
"cache-size":8388608,"cache-miss-rate":0.987013,"pages":18297,"overflow":8,
"cache-miss":1228737},"status":"active","setup-time":10,"total-time":52398,
"ram":{"total":12466991104,"remaining":1695744,"mbps":935.559472,
"transferred":5780760580,"dirty-sync-counter":271,"duplicate":2878530,
"dirty-pages-rate":29130,"skipped":0,"normal-bytes":5748592640,
"normal":1403465}},"id":"libvirt-706"}

18k pages sent compressed in 52 seconds.
cache-miss-rate is 98.7%, totally miss.

after optimizing:
virsh qemu-monitor-command test_vm '{"execute": "query-migrate"}'
{"return":{"expected-downtime":2054,"xbzrle-cache":{"bytes":5066763,
"cache-size":8388608,"cache-miss-rate":0.485924,"pages":194823,"overflow":0,
"cache-miss":210653},"status":"active","setup-time":11,"total-time":18729,
"ram":{"total":12466991104,"remaining":3895296,"mbps":937.663549,
"transferred":1615042219,"dirty-sync-counter":98,"duplicate":2869840,
"dirty-pages-rate":58781,"skipped":0,"normal-bytes":1588404224,
"normal":387794}},"id":"libvirt-266"}

194k pages sent compressed in 18 seconds.
The value of cache-miss-rate decrease to 48.59%.

Signed-off-by: default avatarChenLiang <chenliang88@huawei.com>
Signed-off-by: default avatarGonglei <arei.gonglei@huawei.com>
Reviewed-by: default avatarEric Blake <eblake@redhat.com>
Signed-off-by: default avatarAmit Shah <amit.shah@redhat.com>
      27af7d6e