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

David Gibson 75e972dab5 migration: Mark CPU states dirty before incoming migration/loadvm As a rule, CPU internal state should never be updated when !cpu->kvm_vcpu_dirty (or the HAX equivalent). If that is done, then subsequent calls to cpu_synchronize_state() - usually safe and idempotent - will clobber state. However, we routinely do this during a loadvm or incoming migration. Usually this is called shortly after a reset, which will clear all the cpu dirty flags with cpu_synchronize_all_post_reset(). Nothing is expected to set the dirty flags again before the cpu state is loaded from the incoming stream. This means that it isn't safe to call cpu_synchronize_state() from a post_load handler, which is non-obvious and potentially inconvenient. We could cpu_synchronize_all_state() before the loadvm, but that would be overkill since a) we expect the state to already be synchronized from the reset and b) we expect to completely rewrite the state with a call to cpu_synchronize_all_post_init() at the end of qemu_loadvm_state(). To clear this up, this patch introduces cpu_synchronize_pre_loadvm() and associated helpers, which simply marks the cpu state as dirty without actually changing anything. i.e. it says we want to discard any existing KVM (or HAX) state and replace it with what we're going to load. Cc: Juan Quintela <quintela@redhat.com> Cc: Dave Gilbert <dgilbert@redhat.com> Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Juan Quintela <quintela@redhat.com>		9 years ago
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Makefile.objs	migration: Make savevm.c target independent	9 years ago
block.c	migration: Move include/migration/block.h into migration/	9 years ago
block.h	migration: Move include/migration/block.h into migration/	9 years ago
channel.c	migration: Export tls.c functions in its own file	9 years ago
channel.h	migration: Split migration/channel.c for channel operations	9 years ago
colo-comm.c	migration: Remove vmstate.h from migration.h	9 years ago
colo-failover.c	COLO: Implement the process of failover for primary VM	10 years ago
colo.c	migration: Move include/migration/block.h into migration/	9 years ago
exec.c	migration: Export exec.c functions in its own file	9 years ago
exec.h	migration: Export exec.c functions in its own file	9 years ago
fd.c	migration: Export fd.c functions in its own file	9 years ago
fd.h	migration: Export fd.c functions in its own file	9 years ago
migration.c	migration: Move include/migration/block.h into migration/	9 years ago
page_cache.c	migration: Move page_cache.c to migration/	9 years ago
page_cache.h	migration: Move page_cache.c to migration/	9 years ago
postcopy-ram.c	migration: Export ram.c functions in its own file	9 years ago
postcopy-ram.h	migration: Move postcopy stuff to postcopy-ram.c	9 years ago
qemu-file-channel.c	migration: Split qemu-file.h	9 years ago
qemu-file-channel.h	migration: Export qemu-file-channel.c functions in its own file	9 years ago
qemu-file.c	migration: Split qemu-file.h	9 years ago
qemu-file.h	migration: Split qemu-file.h	9 years ago
qjson.c	migration: Move qjson.h to migration/	9 years ago
qjson.h	migration: Move qjson.h to migration/	9 years ago
ram.c	migration: Export ram.c functions in its own file	9 years ago
ram.h	migration: Export ram.c functions in its own file	9 years ago
rdma.c	migration: Export ram.c functions in its own file	9 years ago
rdma.h	migration: Export rdma.c functions in its own file	9 years ago
savevm.c	migration: Mark CPU states dirty before incoming migration/loadvm	9 years ago
savevm.h	migration: Create savevm.h for functions exported from savevm.c	9 years ago
socket.c	migration: Export socket.c functions in its own file	9 years ago
socket.h	migration: Export socket.c functions in its own file	9 years ago
tls.c	migration: Export tls.c functions in its own file	9 years ago
tls.h	migration: Export tls.c functions in its own file	9 years ago
trace-events	migration: Extra tracing	9 years ago
vmstate-types.c	migration: Split qemu-file.h	9 years ago
vmstate.c	migration: Split qemu-file.h	9 years ago
xbzrle.c	migration: Create migration/xbzrle.h	9 years ago
xbzrle.h	migration: Create migration/xbzrle.h	9 years ago