riscv/qemu: QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org - qemu

QEMU main repository: Please see https://www.qemu.org/docs/master/devel/submitting-a-patch.html for how to submit changes to QEMU. Pull Requests are ignored. Please only use release tarballs from the QEMU website. http://www.qemu.org

emulation kvm qemu virtualization

History

Leonardo Bras 5b1d9bab2d multifd: Implement zero copy write in multifd migration (multifd-zero-copy) Implement zero copy send on nocomp_send_write(), by making use of QIOChannel writev + flags & flush interface. Change multifd_send_sync_main() so flush_zero_copy() can be called after each iteration in order to make sure all dirty pages are sent before a new iteration is started. It will also flush at the beginning and at the end of migration. Also make it return -1 if flush_zero_copy() fails, in order to cancel the migration process, and avoid resuming the guest in the target host without receiving all current RAM. This will work fine on RAM migration because the RAM pages are not usually freed, and there is no problem on changing the pages content between writev_zero_copy() and the actual sending of the buffer, because this change will dirty the page and cause it to be re-sent on a next iteration anyway. A lot of locked memory may be needed in order to use multifd migration with zero-copy enabled, so disabling the feature should be necessary for low-privileged users trying to perform multifd migrations. Signed-off-by: Leonardo Bras <leobras@redhat.com> Reviewed-by: Peter Xu <peterx@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20220513062836.965425-9-leobras@redhat.com> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>		4 years ago
..
block-dirty-bitmap.c	migration: block-dirty-bitmap: add missing qemu_mutex_lock_iothread	5 years ago
block.c	block: rename bdrv_invalidate_cache_all, blk_invalidate_cache and test_sync_op_invalidate_cache	4 years ago
block.h	migration: disable auto-converge during bulk block migration	9 years ago
channel.c	migration: Add migrate_use_tls() helper	4 years ago
channel.h	migration: Route errors down through migration_channel_connect	8 years ago
colo-failover.c	qemu/atomic.h: rename atomic_ to qatomic_	6 years ago
colo.c	COLO: Move some trace code behind qemu_mutex_unlock_iothread()	4 years ago
dirtyrate.c	Use g_new() & friends where that makes obvious sense	4 years ago
dirtyrate.h	migration/dirtyrate: introduce struct and adjust DirtyRateStat	4 years ago
exec.c	migration: unify incoming processing	8 years ago
exec.h	migration: Export exec.c functions in its own file	9 years ago
fd.c	monitor: Use getter/setter functions for cur_mon	6 years ago
fd.h	migration: Fix fd protocol for incoming defer	7 years ago
global_state.c	migration: Silence compiler warning in global_state_store_running()	6 years ago
meson.build	meson, configure: move RDMA options to meson	4 years ago
migration.c	multifd: Implement zero copy write in multifd migration (multifd-zero-copy)	4 years ago
migration.h	migration: Add migrate_use_tls() helper	4 years ago
multifd-zlib.c	Use g_new() & friends where that makes obvious sense	4 years ago
multifd-zstd.c	multifd: recv side only needs the RAMBlock host address	4 years ago
multifd.c	multifd: Implement zero copy write in multifd migration (multifd-zero-copy)	4 years ago
multifd.h	multifd: Implement zero copy write in multifd migration (multifd-zero-copy)	4 years ago
page_cache.c	migration: Fix cache_init()'s "Failed to allocate" error messages	5 years ago
page_cache.h	migration: Clean up signed vs. unsigned XBZRLE cache-size	5 years ago
postcopy-ram.c	Replace qemu_real_host_page variables with inlined functions	4 years ago
postcopy-ram.h	migration: Add postcopy_thread_create()	4 years ago
qemu-file-channel.c	migration: Move the yank unregister of channel_close out	5 years ago
qemu-file-channel.h	migration: Export qemu-file-channel.c functions in its own file	9 years ago
qemu-file.c	include: Move qemu_madvise() and related #defines to new qemu/madvise.h	4 years ago
qemu-file.h	migration: Teach QEMUFile to be QIOChannel-aware	5 years ago
ram.c	multifd: multifd_send_sync_main now returns negative on error	4 years ago
ram.h	migration: Export ram_load_postcopy()	4 years ago
rdma.c	QIOChannel: Add flags on io_writev and introduce io_flush callback	4 years ago
rdma.h	migration: Export rdma.c functions in its own file	9 years ago
savevm.c	migration: Allow migrate-recover to run multiple times	4 years ago
savevm.h	migration: Add blocker information	5 years ago
socket.c	multifd: Implement zero copy write in multifd migration (multifd-zero-copy)	4 years ago
socket.h	migration: unify the framework of socket-type channel	6 years ago
target.c	migration: Move populate_vfio_info() into a separate file	5 years ago
tls.c	migration: fix use of TLS PSK credentials with a UNIX socket	4 years ago
tls.h	migration: Fix Lesser GPL version number	5 years ago
trace-events	migration: Tracepoint change in postcopy-run bottom half	4 years ago
trace.h	trace: switch position of headers to what Meson requires	6 years ago
vmstate-types.c	Move CPU softfloat unions to cpu-float.h	4 years ago
vmstate.c	migration: Remove load_state_old and minimum_version_id_old	4 years ago
xbzrle.c	migration: Create migration/xbzrle.h	9 years ago
xbzrle.h	migration: Create migration/xbzrle.h	9 years ago
yank_functions.c	migration: Move the yank unregister of channel_close out	5 years ago
yank_functions.h	migration: Move the yank unregister of channel_close out	5 years ago