> -----Original Message----- > From: qemu-devel-bounces+chen.zhang=intel.com@nongnu.org <qemu- > devel-bounces+chen.zhang=intel.com@nongnu.org> On Behalf Of Lukas > Straub > Sent: Monday, April 3, 2023 1:56 AM > To: qemu-devel <qemu-devel@nongnu.org> > Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>; Juan Quintela > <quintela@redhat.com>; Peter Xu <peterx@redhat.com> > Subject: [PATCH 00/14] migration/ram.c: Refactor compress code > > This series refactors the ram compress code. > > It first removes ram.c dependencies from the core compress code, then > moves it out to its own file. Finally, on the migration destination side the > initialisation and cleanup of compress threads is moved out of ram.c to > migration.c. This allows using COLO with compress enabled. > Nice to see this optimization~ Support the ram compress feature will reduce COLO checkpoint network bandwidth requirements And may improve COLO protected VM's performance. Thanks Chen > This series is based on the following series: > https://lore.kernel.org/qemu- > devel/af76761aa6978071c5b8e9b872b697db465a5520.1680457631.git.lukasstr > aub2@web.de/T/#t > > Lukas Straub (14): > ram.c: Let the compress threads return a CompressResult enum > ram.c: Dont change param->block in the compress thread > ram.c: Reset result after sending queued data > ram.c: Do not call save_page_header() from compress threads > ram.c: Call update_compress_thread_counts from > compress_send_queued_data > ram.c: Remove last ram.c dependency from the core compress code > ram.c: Introduce whitespace (squash with next patch) > ram.c: Move core compression code into its own file > ram.c: Remove whitespace (squash with previous patch) > ram.c: Move core decompression code into its own file > ram compress: Assert that the file buffer matches the result > ram.c: Remove unused include after moving out code > ram-compress.c: Make target independent > migration: Initialize and cleanup decompression in migration.c > > migration/meson.build | 5 +- > migration/migration.c | 9 + > migration/qemu-file.c | 11 + > migration/qemu-file.h | 1 + > migration/ram-compress.c | 483 > ++++++++++++++++++++++++++++++++++++++ > migration/ram-compress.h | 70 ++++++ > migration/ram.c | 490 +++------------------------------------ > 7 files changed, 615 insertions(+), 454 deletions(-) create mode 100644 > migration/ram-compress.c create mode 100644 migration/ram-compress.h > > -- > 2.30.2
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