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Re: [Qemu-devel] [PATCH 3/4] migration/savevm: load_header before load_s
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH 3/4] migration/savevm: load_header before load_setup |
Date: |
Tue, 14 May 2019 16:45:41 +0100 |
User-agent: |
Mutt/1.11.4 (2019-03-13) |
* Wei Yang (address@hidden) wrote:
> In migration_thread() and qemu_savevm_state(), we savevm_state in
> following sequence:
>
> qemu_savevm_state_header(f);
> qemu_savevm_state_setup(f);
>
> Then it would be more proper to loadvm_state in the save sequence.
>
> Signed-off-by: Wei Yang <address@hidden>
Yes, OK, I think that makes sense; the loadvm_state_setup
and savevm_state_setup are actually quite different in what they do,
however it does make sense to do the loadvm_state_setup after
we have the configuration loaded, because then potentially it means
we can alter the setup.
Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> ---
> migration/savevm.c | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/migration/savevm.c b/migration/savevm.c
> index 6c61056cde..a80ae83663 100644
> --- a/migration/savevm.c
> +++ b/migration/savevm.c
> @@ -2427,10 +2427,6 @@ int qemu_loadvm_state(QEMUFile *f)
> return -ENOTSUP;
> }
>
> - if (qemu_loadvm_state_setup(f) != 0) {
> - return -EINVAL;
> - }
> -
> if (migrate_get_current()->send_configuration) {
> if (qemu_get_byte(f) != QEMU_VM_CONFIGURATION) {
> error_report("Configuration section missing");
> @@ -2445,6 +2441,10 @@ int qemu_loadvm_state(QEMUFile *f)
> }
> }
>
> + if (qemu_loadvm_state_setup(f) != 0) {
> + return -EINVAL;
> + }
> +
> cpu_synchronize_all_pre_loadvm();
>
> ret = qemu_loadvm_state_main(f, mis);
> --
> 2.19.1
>
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
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