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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-devel] [PATCH] migration: not send zero page header in ram bulk stage |
| Date: | Wed, 20 Jan 2016 10:55:31 +0100 |
| User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 |
On 19/01/2016 04:17, Li, Liang Z wrote: > > Paolo is right, for VM in destination, QEMU may write VM's memory before > > VM starts. > > So your assumption that "VM's RAM pages are initialized to zero" is > > incorrect. > > This patch will break LM. > > Which portion of the VM's RAM pages will be written by QEMU? Do you know some > exact information? > I can't wait for Paolo's response. It is basically anything that uses rom_add_file_fixed or rom_add_blob_fixed with an address that points into RAM. Paolo
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