From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56288) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z7nUG-000123-41 for qemu-devel@nongnu.org; Wed, 24 Jun 2015 12:25:21 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z7nUC-0003cL-1g for qemu-devel@nongnu.org; Wed, 24 Jun 2015 12:25:20 -0400 Received: from mail-wi0-x230.google.com ([2a00:1450:400c:c05::230]:34806) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z7nUB-0003bJ-Q6 for qemu-devel@nongnu.org; Wed, 24 Jun 2015 12:25:15 -0400 Received: by wicnd19 with SMTP id nd19so139703260wic.1 for ; Wed, 24 Jun 2015 09:25:15 -0700 (PDT) Sender: Paolo Bonzini From: Paolo Bonzini Date: Wed, 24 Jun 2015 18:25:01 +0200 Message-Id: <1435163110-2724-1-git-send-email-pbonzini@redhat.com> Subject: [Qemu-devel] [PATCH for-2.4 v2 0/9] 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: borntraeger@de.ibm.com, 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 v1->v2: fix botched merge in patch 4 [Fam], correct locking in patch 6 [Fam], push down to kvm_arch_handle_exit in patch 6 [Christian] 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 | 72 ++++++++++++++++++++++++++++++++++++++++++++++++ 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, 185 insertions(+), 17 deletions(-) -- 1.8.3.1