Merge pull request #14 from tlex/update/qemu-5.0.1
Update QEMU 5.0 to 5.0.1 and drop merged numa patch
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@ -20,8 +20,8 @@ ENV QEMU_KEYS \
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# https://www.qemu.org/download/#source
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# https://download.qemu.org/?C=M;O=D
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ENV QEMU_VERSION 5.0.0
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ENV QEMU_URL https://download.qemu.org/qemu-5.0.0.tar.xz
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ENV QEMU_VERSION 5.0.1
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ENV QEMU_URL https://download.qemu.org/qemu-5.0.1.tar.xz
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RUN set -eux; \
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\
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@ -1,52 +0,0 @@
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From 08ec0d4e2bf3e73229ce7a4e537a57794848d319 Mon Sep 17 00:00:00 2001
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Origin: https://github.com/ehabkost/qemu/commit/08ec0d4e2bf3e73229ce7a4e537a57794848d319
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From: Igor Mammedov <imammedo@redhat.com>
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Date: Thu, 30 Apr 2020 11:46:06 -0400
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Subject: [PATCH] hostmem: don't use mbind() if host-nodes is empty
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Since 5.0 QEMU uses hostmem backend for allocating main guest RAM.
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The backend however calls mbind() which is typically NOP
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in case of default policy/absent host-nodes bitmap.
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However when runing in container with black-listed mbind()
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syscall, QEMU fails to start with error
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"cannot bind memory to host NUMA nodes: Operation not permitted"
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even when user hasn't provided host-nodes to pin to explictly
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(which is the case with -m option)
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To fix issue, call mbind() only in case when user has provided
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host-nodes explicitly (i.e. host_nodes bitmap is not empty).
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That should allow to run QEMU in containers with black-listed
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mbind() without memory pinning. If QEMU provided memory-pinning
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is required user still has to white-list mbind() in container
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configuration.
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Reported-by: Manuel Hohmann <mhohmann@physnet.uni-hamburg.de>
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Signed-off-by: Igor Mammedov <imammedo@redhat.com>
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Message-Id: <20200430154606.6421-1-imammedo@redhat.com>
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Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
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Cc: qemu-stable@nongnu.org
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Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
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---
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backends/hostmem.c | 6 ++++--
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1 file changed, 4 insertions(+), 2 deletions(-)
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diff --git a/backends/hostmem.c b/backends/hostmem.c
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index 4ee43548987..61e3255f5c9 100644
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--- a/backends/hostmem.c
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+++ b/backends/hostmem.c
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@@ -383,8 +383,10 @@ host_memory_backend_memory_complete(UserCreatable *uc, Error **errp)
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assert(sizeof(backend->host_nodes) >=
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BITS_TO_LONGS(MAX_NODES + 1) * sizeof(unsigned long));
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assert(maxnode <= MAX_NODES);
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- if (mbind(ptr, sz, backend->policy,
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- maxnode ? backend->host_nodes : NULL, maxnode + 1, flags)) {
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+
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+ if (maxnode &&
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+ mbind(ptr, sz, backend->policy, backend->host_nodes, maxnode + 1,
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+ flags)) {
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if (backend->policy != MPOL_DEFAULT || errno != ENOSYS) {
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error_setg_errno(errp, errno,
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"cannot bind memory to host NUMA nodes");
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@ -8,8 +8,8 @@
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"version": "4.2.1"
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},
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"5.0": {
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"url": "https://download.qemu.org/qemu-5.0.0.tar.xz",
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"version": "5.0.0"
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"url": "https://download.qemu.org/qemu-5.0.1.tar.xz",
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"version": "5.0.1"
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},
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"5.1": {
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"url": "https://download.qemu.org/qemu-5.1.0.tar.xz",
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