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[PATCH v1 0/3] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_
From: |
David Hildenbrand |
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 |
#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
- [PATCH v1 0/3] util/oslib-posix: Support MADV_POPULATE_WRITE for os_mem_prealloc(),
David Hildenbrand <=