Skip to content

Comments

Clear the AC flag before capturing it#43

Open
tandasat wants to merge 1 commit intoionescu007:masterfrom
tandasat:clear_ac_flag
Open

Clear the AC flag before capturing it#43
tandasat wants to merge 1 commit intoionescu007:masterfrom
tandasat:clear_ac_flag

Conversation

@tandasat
Copy link
Contributor

@tandasat tandasat commented Dec 4, 2019

On some systems, the AC flag was already set when it is captured by SimpleVisor. This results in skipping initialization of the hypervisor and The SHV failed to initialize (0xFFFFFFFD) Failed CPU: 0 error because the subsequent check after capturing believes the hypervisor was already set up.

I found my VM (18362.1.amd64fre.19h1_release.190318-1202) hit this case.

This change clears the flag prior to capturing and checking the flag, ensuring initialization happens.

@supperpiccle
Copy link

I also ran into this exact problem in my testing.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment

Labels

None yet

Projects

None yet

Development

Successfully merging this pull request may close these issues.

2 participants