From: David Hildenbrand <david@redhat.com>
To: qemu-devel@nongnu.org
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>,
Eduardo Habkost <ehabkost@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>,
David Hildenbrand <david@redhat.com>,
"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
Igor Mammedov <imammedo@redhat.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Marek Kedzierski <mkedzier@redhat.com>
Subject: [PATCH v1 0/3] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc()
Date: Wed, 14 Jul 2021 13:23:03 +0200 [thread overview]
Message-ID: <20210714112306.67793-1-david@redhat.com> (raw)
#1 adds support for MADV_POPULATE_WRITE, #2 cleans up the code to avoid
global variables and prepare for concurrency and #3 makes os_mem_prealloc()
safe to be called from multiple threads concurrently.
Details regarding MADV_POPULATE_WRITE can be found in introducing upstream
Linux commit 4ca9b3859dac ("mm/madvise: introduce
MADV_POPULATE_(READ|WRITE) to prefault page tables") and in the latest man
page patch [1].
[1] https://lkml.kernel.org/r/20210712083917.16361-1-david@redhat.com
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Cc: Marek Kedzierski <mkedzier@redhat.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
David Hildenbrand (3):
util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc()
util/oslib-posix: Introduce and use MemsetContext for
touch_all_pages()
util/oslib-posix: Support concurrent os_mem_prealloc() invocation
include/qemu/osdep.h | 7 ++
util/oslib-posix.c | 167 ++++++++++++++++++++++++++++++-------------
2 files changed, 126 insertions(+), 48 deletions(-)
--
2.31.1
next reply other threads:[~2021-07-14 11:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-14 11:23 David Hildenbrand [this message]
2021-07-14 11:23 ` [PATCH v1 1/3] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc() David Hildenbrand
2021-07-20 14:08 ` Daniel P. Berrangé
2021-07-20 14:34 ` David Hildenbrand
2021-07-14 11:23 ` [PATCH v1 2/3] util/oslib-posix: Introduce and use MemsetContext for touch_all_pages() David Hildenbrand
2021-07-20 14:27 ` Daniel P. Berrangé
2021-07-14 11:23 ` [PATCH v1 3/3] util/oslib-posix: Support concurrent os_mem_prealloc() invocation David Hildenbrand
2021-07-20 14:22 ` Daniel P. Berrangé
2021-07-20 14:27 ` David Hildenbrand
2021-07-20 14:31 ` Daniel P. Berrangé
2021-07-20 14:35 ` David Hildenbrand
2021-07-20 13:55 ` [PATCH v1 0/3] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc() Pankaj Gupta
2021-07-20 13:58 ` Pankaj Gupta
2021-07-20 14:45 ` Daniel P. Berrangé
2021-07-21 8:23 ` David Hildenbrand
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