Re: [PATCH v2 1/1] migration: skip poisoned memory pages on "ram saving" phase

2023-09-20 Thread William Roche
Thank you Zhijian for your feedback. So I'll try to push this change today. Cheers, William. On 9/20/23 12:04, Zhijian Li (Fujitsu) wrote: On 15/09/2023 19:31, William Roche wrote: On 9/15/23 05:13, Zhijian Li (Fujitsu) wrote: I'm okay with "RDMA isn't touched". BTW, could you share

Re: [PATCH v2 1/1] migration: skip poisoned memory pages on "ram saving" phase

2023-09-20 Thread Zhijian Li (Fujitsu)
On 15/09/2023 19:31, William Roche wrote: > On 9/15/23 05:13, Zhijian Li (Fujitsu) wrote: >> >> >> I'm okay with "RDMA isn't touched". >> BTW, could you share your reproducing program/hacking to poison the page, so >> that >> i am able to take a look the RDMA part later when i'm free. >> >> Not

Re: [PATCH v2 1/1] migration: skip poisoned memory pages on "ram saving" phase

2023-09-17 Thread Zhijian Li (Fujitsu)
On 15/09/2023 19:31, William Roche wrote: > On 9/15/23 05:13, Zhijian Li (Fujitsu) wrote: >> >> >> I'm okay with "RDMA isn't touched". >> BTW, could you share your reproducing program/hacking to poison the page, so >> that >> i am able to take a look the RDMA part later when i'm free. >> >> Not

Re: [PATCH v2 1/1] migration: skip poisoned memory pages on "ram saving" phase

2023-09-15 Thread William Roche
On 9/15/23 05:13, Zhijian Li (Fujitsu) wrote: I'm okay with "RDMA isn't touched". BTW, could you share your reproducing program/hacking to poison the page, so that i am able to take a look the RDMA part later when i'm free. Not sure it's suitable to acknowledge a not touched part. Anyway

Re: [PATCH v2 1/1] migration: skip poisoned memory pages on "ram saving" phase

2023-09-14 Thread Zhijian Li (Fujitsu)
On 15/09/2023 04:20, “William Roche wrote: > From: William Roche > > A memory page poisoned from the hypervisor level is no longer readable. > Thus, it is now treated as a zero-page for the ram saving migration phase. > > The migration of a VM will crash Qemu when it tries to read the >

[PATCH v2 1/1] migration: skip poisoned memory pages on "ram saving" phase

2023-09-14 Thread “William Roche
From: William Roche A memory page poisoned from the hypervisor level is no longer readable. Thus, it is now treated as a zero-page for the ram saving migration phase. The migration of a VM will crash Qemu when it tries to read the memory address space and stumbles on the poisoned page with a