Re: [RFC/RFT PATCH 0/2] x86: sgx_vepc: implement ioctl to EREMOVE all pages

Yang Zhong
2021-09-14T07:24:36Z

On Mon, Sep 13, 2021 at 09:11:51AM -0400, Paolo Bonzini wrote:
> Based on discussions from the previous week(end), this series implements
> a ioctl that performs EREMOVE on all pages mapped by a /dev/sgx_vepc
> file descriptor. Other possibilities, such as closing and reopening
> the device, are racy.
>
> The patches are untested, but I am posting them because they are simple
> and so that Yang Zhong can try using them in QEMU.
>

Paolo, i re-implemented one reset patch in the Qemu side to call this ioctl(),
and did some tests on Windows and Linux guest, the Windows/Linux guest reboot
work well.

So, it is time for me to send this reset patch to Qemu community? or wait for
this kernel patchset merged? thanks!

Yang

> Paolo
>
> Paolo Bonzini (2):
> x86: sgx_vepc: extract sgx_vepc_remove_page
> x86: sgx_vepc: implement SGX_IOC_VEPC_REMOVE ioctl
>
> arch/x86/include/uapi/asm/sgx.h | 2 ++
> arch/x86/kernel/cpu/sgx/virt.c | 48 ++++++++++++++++++++++++++++++---
> 2 files changed, 47 insertions(+), 3 deletions(-)
>
> --
> 2.27.0