Vladimir Sementsov-Ogievskiy b3b76fc643 util/iov: improve qemu_iovec_is_zero ...

We'll need to check a part of qiov soon, so implement it now.

Optimization with align down to 4 * sizeof(long) is dropped due to:
1. It is strange: it aligns length of the buffer, but where is a
   guarantee that buffer pointer is aligned itself?
2. buffer_is_zero() is a better place for optimizations and it has
   them.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 20190604161514.262241-3-vsementsov@virtuozzo.com
Message-Id: <20190604161514.262241-3-vsementsov@virtuozzo.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
(cherry picked from commit f76889e7b9)
*prereq for 292d06b9
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

2019-11-12 11:59:58 -06:00

..

authz

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

block

block: Only the main loop can change AioContexts

2019-07-22 18:41:43 +02:00

chardev

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

crypto

crypto: Fix LGPL information in the file headers

2019-07-19 14:21:25 +01:00

disas

Clean up a few header guard symbols

2019-06-12 13:20:20 +02:00

exec

linux-user: check valid address in access_ok()

2019-07-18 13:57:28 +02:00

fpu

Supply missing header guards

2019-06-12 13:20:21 +02:00

hw

virtio-net: prevent offloads reset on migration

2019-11-04 08:24:34 -06:00

io

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

libdecnumber

…

migration

vmstate.h: Type check VMSTATE_STRUCT_VARRAY macros

2019-07-26 16:17:56 +01:00

monitor

hw/core: Collect HMP command handlers in hw/core/

2019-07-02 13:37:00 +02:00

net

net/announce: Add optional ID

2019-07-02 10:21:06 +08:00

qapi

qapi: remove qmp_unregister_command()

2019-02-18 14:44:05 +01:00

qemu

util/iov: improve qemu_iovec_is_zero

2019-11-12 11:59:58 -06:00

qom

Include qemu/module.h where needed, drop it from qemu-common.h

2019-06-12 13:18:33 +02:00

scsi

scsi: explicitly list guest-recoverable sense codes

2019-07-15 11:20:42 +02:00

standard-headers

virtio-pmem: sync linux headers

2019-07-04 17:00:32 -04:00

sysemu

hmp: Print if memory section is registered with an accelerator

2019-07-19 19:04:49 +02:00

ui

Supply missing header guards

2019-06-12 13:20:21 +02:00

elf.h

linux-user: elf: ELF_HWCAP for s390x

2019-06-07 14:53:26 +02:00

glib-compat.h

slirp: Move g_spawn_async_with_fds_qemu compatibility to slirp/

2019-02-07 15:49:08 +02:00

qemu-common.h

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

qemu-io.h

Include qemu-common.h exactly where needed

2019-06-12 13:20:20 +02:00

trace-tcg.h

…