RE: [PATCH 1/2] block:hdev: support BLKSECDISCARD

[Qi, Yadong]

> What is the use case for exposing secure erase in qemu?  The whole concept for
> a LBA based secure erase is generally not a very smart idea for flash based
> media..
Hi, Christoph
We got a user requirement: support BLKSECDISCARD in VM. Which is:
ioctl(BLKSECDISCARD) in guest -> qemu backend perform secure discard
on native block device accordingly.
This is a requirement to meet the security level of the project.
So I sent out these patches to see whether qemu could accept such changes.