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[Qemu-devel] [PATCH v9 10/56] Add QEMU_MADV_NOHUGEPAGE
From: |
Dr. David Alan Gilbert (git) |
Subject: |
[Qemu-devel] [PATCH v9 10/56] Add QEMU_MADV_NOHUGEPAGE |
Date: |
Thu, 5 Nov 2015 18:10:37 +0000 |
From: "Dr. David Alan Gilbert" <address@hidden>
Add QEMU_MADV_NOHUGEPAGE as an OS-independent version of
MADV_NOHUGEPAGE.
We include sys/mman.h before making the test to ensure
that we pick up the system defines.
Signed-off-by: Dr. David Alan Gilbert <address@hidden>
Reviewed-by: Juan Quintela <address@hidden>
Reviewed-by: Amit Shah <address@hidden>
---
include/qemu/osdep.h | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/include/qemu/osdep.h b/include/qemu/osdep.h
index ab2d5d9..861d84b 100644
--- a/include/qemu/osdep.h
+++ b/include/qemu/osdep.h
@@ -139,6 +139,8 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#if defined(CONFIG_MADVISE)
+#include <sys/mman.h>
+
#define QEMU_MADV_WILLNEED MADV_WILLNEED
#define QEMU_MADV_DONTNEED MADV_DONTNEED
#ifdef MADV_DONTFORK
@@ -171,6 +173,11 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#else
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
#endif
+#ifdef MADV_NOHUGEPAGE
+#define QEMU_MADV_NOHUGEPAGE MADV_NOHUGEPAGE
+#else
+#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
+#endif
#elif defined(CONFIG_POSIX_MADVISE)
@@ -182,6 +189,7 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
+#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
#else /* no-op */
@@ -193,6 +201,7 @@ void qemu_anon_ram_free(void *ptr, size_t size);
#define QEMU_MADV_DODUMP QEMU_MADV_INVALID
#define QEMU_MADV_DONTDUMP QEMU_MADV_INVALID
#define QEMU_MADV_HUGEPAGE QEMU_MADV_INVALID
+#define QEMU_MADV_NOHUGEPAGE QEMU_MADV_INVALID
#endif
--
2.5.0
- [Qemu-devel] [PATCH v9 01/56] Add postcopy documentation, (continued)
- [Qemu-devel] [PATCH v9 01/56] Add postcopy documentation, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 04/56] Move page_size_init earlier, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 05/56] qemu_ram_block_from_host, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 06/56] qemu_ram_block_by_name, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 08/56] Add qemu_get_buffer_in_place to avoid copies some of the time, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 07/56] Rename mis->file to from_src_file, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 09/56] Add wrapper for setting blocking status on a QEMUFile, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 10/56] Add QEMU_MADV_NOHUGEPAGE,
Dr. David Alan Gilbert (git) <=
- [Qemu-devel] [PATCH v9 11/56] ram_debug_dump_bitmap: Dump a migration bitmap as text, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 12/56] ram_load: Factor out host_from_stream_offset call and check, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 13/56] migrate_init: Call from savevm, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 16/56] Return path: Open a return path on QEMUFile for sockets, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 15/56] Add Linux userfaultfd.h header, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 14/56] Rename save_live_complete to save_live_complete_precopy, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 17/56] Return path: socket_writev_buffer: Block even on non-blocking fd's, Dr. David Alan Gilbert (git), 2015/11/05
- [Qemu-devel] [PATCH v9 18/56] Migration commands, Dr. David Alan Gilbert (git), 2015/11/05