From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36098) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZAZjt-0003Ou-SZ for qemu-devel@nongnu.org; Thu, 02 Jul 2015 04:20:58 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZAZjr-0002zZ-5a for qemu-devel@nongnu.org; Thu, 02 Jul 2015 04:20:57 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48403) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZAZjr-0002zU-06 for qemu-devel@nongnu.org; Thu, 02 Jul 2015 04:20:55 -0400 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id 7696FB1F96 for ; Thu, 2 Jul 2015 08:20:54 +0000 (UTC) From: Paolo Bonzini Date: Thu, 2 Jul 2015 10:20:42 +0200 Message-Id: <1435825251-674-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH for-2.4 0/9 v3] KVM: Do I/O outside BQL whenever possible List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: famz@redhat.com This is the rebased and updated version of the patches I posted a couple months ago (well before soft freeze :)). This version introduces a qemu_mutex_iothread_locked() primitive in order to avoid recursive locking of the BQL. The previous attempts, which used functions such as address_space_rw_unlocked, required the introduction of a multitude of *_unlocked functions (e.g. address_space_ldl_unlocked or dma_buf_write_unlocked). Note that adding unlocked access to TCG would require reverting commit 3b64349 (memory: Replace io_mem_read/write with memory_region_dispatch_read/write, 2015-04-26). Paolo v2->v3: Fix grammar consistency in patch 3 [Fam] Fix bad rebase in patch 5 [Fam] Jan Kiszka (4): memory: Add global-locking property to memory regions memory: let address_space_rw/ld*/st* run outside the BQL kvm: First step to push iothread lock out of inner run loop kvm: Switch to unlocked PIO Paolo Bonzini (5): main-loop: use qemu_mutex_lock_iothread consistently main-loop: introduce qemu_mutex_iothread_locked exec: pull qemu_flush_coalesced_mmio_buffer() into address_space_rw/ld*/st* acpi: mark PMTIMER as unlocked kvm: Switch to unlocked MMIO cpus.c | 19 ++++++++++--- exec.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++ hw/acpi/core.c | 1 + include/exec/memory.h | 26 ++++++++++++++++++ include/qemu/main-loop.h | 10 +++++++ kvm-all.c | 8 ++++-- memory.c | 23 ++++++++-------- stubs/iothread-lock.c | 5 ++++ target-i386/kvm.c | 24 +++++++++++++++++ target-mips/kvm.c | 4 +++ target-ppc/kvm.c | 7 +++++ target-s390x/kvm.c | 3 +++ 12 files changed, 182 insertions(+), 17 deletions(-) -- 2.4.3