From: Paolo Bonzini <pbonzini@redhat.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>,
qemu-devel@nongnu.org, qemu-block@nongnu.org
Cc: mlin@kernel.org, famz@redhat.com, ming.lei@canonical.com,
stefanha@redhat.com, mst@redhat.com
Subject: Re: [Qemu-devel] [RFC PATCH 00/40] Sneak peek of virtio and dataplane changes for 2.6
Date: Wed, 9 Dec 2015 21:35:06 +0100 [thread overview]
Message-ID: <5668907A.80604@redhat.com> (raw)
In-Reply-To: <5656E158.3090505@redhat.com>
On 26/11/2015 11:39, Paolo Bonzini wrote:
> I would really prefer to get rid of vring.c as soon as the infrastructure
> makes it possible---even if it's faster. We know what makes virtio.c
> slower, and it's simpler to fix virtio.c than to convert all the other
> models to vring.c _plus_ make vring.c safe for migration.
I've now pushed some optimizations of exec.c to the same place (branch
dataplane, git://github.com/bonzini/qemu.git). Basically if the length
of an address_space_read is constant, and the target ends up being RAM,
the compiler can inline address_space_read in the caller and in
particular eliminate the memcpy.
Paolo
next prev parent reply other threads:[~2015-12-09 20:35 UTC|newest]
Thread overview: 56+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-24 18:00 [Qemu-devel] [RFC PATCH 00/40] Sneak peek of virtio and dataplane changes for 2.6 Paolo Bonzini
2015-11-24 18:00 ` [Qemu-devel] [PATCH 01/40] 9pfs: allocate pdus with g_malloc/g_free Paolo Bonzini
2015-11-30 2:27 ` Fam Zheng
2015-11-30 2:33 ` Fam Zheng
2015-11-30 16:35 ` Greg Kurz
2015-11-24 18:00 ` [Qemu-devel] [PATCH 02/40] virtio: move VirtQueueElement at the beginning of the structs Paolo Bonzini
2015-11-24 18:00 ` [Qemu-devel] [PATCH 03/40] virtio: move allocation to virtqueue_pop/vring_pop Paolo Bonzini
2015-11-30 3:00 ` Fam Zheng
2015-11-24 18:00 ` [Qemu-devel] [PATCH 04/40] virtio: introduce qemu_get/put_virtqueue_element Paolo Bonzini
2015-11-24 18:00 ` [Qemu-devel] [PATCH 05/40] virtio: read/write the VirtQueueElement a field at a time Paolo Bonzini
2015-11-30 9:47 ` Fam Zheng
2015-11-30 10:37 ` Paolo Bonzini
2015-11-24 18:00 ` [Qemu-devel] [PATCH 06/40] virtio: introduce virtqueue_alloc_element Paolo Bonzini
2015-11-24 18:00 ` [Qemu-devel] [PATCH 07/40] virtio: slim down allocation of VirtQueueElements Paolo Bonzini
2015-11-30 3:24 ` Fam Zheng
2015-11-30 8:36 ` Paolo Bonzini
2015-11-24 18:00 ` [Qemu-devel] [PATCH 08/40] vring: " Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 09/40] vring: make vring_enable_notification return void Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 10/40] virtio: combine the read of a descriptor Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 11/40] virtio: add AioContext-specific function for host notifiers Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 12/40] virtio: export vring_notify as virtio_should_notify Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 13/40] virtio-blk: fix "disabled data plane" mode Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 14/40] virtio-blk: do not use vring in dataplane Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 15/40] virtio-scsi: " Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 16/40] vring: remove Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 17/40] iothread: release AioContext around aio_poll Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 18/40] qemu-thread: introduce QemuRecMutex Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 19/40] aio: convert from RFifoLock to QemuRecMutex Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 20/40] aio: rename bh_lock to list_lock Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 21/40] qemu-thread: introduce QemuLockCnt Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 22/40] aio: make ctx->list_lock a QemuLockCnt, subsuming ctx->walking_bh Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 23/40] qemu-thread: optimize QemuLockCnt with futexes on Linux Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 24/40] aio: tweak walking in dispatch phase Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 25/40] aio-posix: remove walking_handlers, protecting AioHandler list with list_lock Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 26/40] aio-win32: " Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 27/40] aio: document locking Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 28/40] aio: push aio_context_acquire/release down to dispatching Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 29/40] quorum: use atomics for rewrite_count Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 30/40] quorum: split quorum_fifo_aio_cb from quorum_aio_cb Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 31/40] qed: introduce qed_aio_start_io and qed_aio_next_io_cb Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 32/40] block: explicitly acquire aiocontext in callbacks that need it Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 33/40] block: explicitly acquire aiocontext in bottom halves " Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 34/40] block: explicitly acquire aiocontext in timers " Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 35/40] block: explicitly acquire aiocontext in aio callbacks " Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 36/40] aio: update locking documentation Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 37/40] async: optimize aio_bh_poll Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 38/40] aio-posix: partially inline aio_dispatch into aio_poll Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 39/40] async: remove unnecessary inc/dec pairs Paolo Bonzini
2015-11-24 18:01 ` [Qemu-devel] [PATCH 40/40] dma-helpers: avoid lock inversion with AioContext Paolo Bonzini
2015-11-26 9:36 ` [Qemu-devel] [RFC PATCH 00/40] Sneak peek of virtio and dataplane changes for 2.6 Christian Borntraeger
2015-11-26 9:41 ` Christian Borntraeger
2015-11-26 10:39 ` Paolo Bonzini
2015-12-09 20:35 ` Paolo Bonzini [this message]
2015-12-16 12:54 ` Christian Borntraeger
2015-12-16 14:40 ` Christian Borntraeger
2015-12-16 17:42 ` Paolo Bonzini
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