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
..
accel.h	accel: make configure_accelerator return void	10 years ago
arch_init.h	audio: Move arch_init audio code to hw/audio/soundhw.c	9 years ago
balloon.h	Clean up ill-advised or unusual header guards	10 years ago
block-backend.h	block: Add errp to b{lk,drv}_truncate()	9 years ago
blockdev.h	blockdev: Make orphaned -drive fatal	10 years ago
bt.h	Clean up header guards that don't match their file name	10 years ago
cpus.h	migration: Mark CPU states dirty before incoming migration/loadvm	9 years ago
cryptodev.h	cryptodev: wrap the ready flag	10 years ago
device_tree.h	Clean up ill-advised or unusual header guards	10 years ago
dma.h	dma-helpers: explicitly pass alignment into DMA helpers	10 years ago
dump-arch.h	dump: allow target to set the physical base	11 years ago
dump.h	dump: Acquire BQL around vm_start() in dump thread	9 years ago
hax.h	migration: Mark CPU states dirty before incoming migration/loadvm	9 years ago
hostmem.h	hostmem: introduce host_memory_backend_mr_inited()	9 years ago
hw_accel.h	migration: Mark CPU states dirty before incoming migration/loadvm	9 years ago
iothread.h	iothread: add poll-grow and poll-shrink parameters	10 years ago
kvm.h	migration: Mark CPU states dirty before incoming migration/loadvm	9 years ago
kvm_int.h	kvm-all: add support for multiple address spaces	11 years ago
memory_mapping.h	Use scripts/clean-includes to drop redundant qemu/typedefs.h	11 years ago
numa.h	numa: remove node_cpu bitmaps as they are no longer used	9 years ago
os-posix.h	util: drop old utimensat() compat code	9 years ago
os-win32.h	log: Add locking to large logging blocks	10 years ago
qtest.h	include: Clean up includes	11 years ago
replay.h	shutdown: Preserve shutdown cause through replay	9 years ago
reset.h	hw: move reset handlers from vl.c to hw/core	10 years ago
rng-random.h	rng-random: rename RndRandom to RngRandom	10 years ago
rng.h	rng: switch request queue to QSIMPLEQ	11 years ago
seccomp.h	include: Clean up includes	11 years ago
sysemu.h	migration: Create include for migration snapshots	9 years ago
tpm.h	TPM: fix build with tpm disabled	11 years ago
tpm_backend.h	Clean up header guards that don't match their file name	10 years ago
tpm_backend_int.h	Clean up header guards that don't match their file name	10 years ago
watchdog.h	watchdog: introduction of get_watchdog_action	11 years ago
xen-mapcache.h	xen/mapcache: store dma information in revmapcache entries for debugging	9 years ago