On 11/9/23 06:37, Andreas Schwab wrote:
On Jul 31 2023, Daniel Henrique Barboza wrote:
Existing userspaces can be affected by this error code change. We
checked a few. As of current upstream code, crosvm doesn't check for any
particular errno code when using kvm_(get|set)_one_reg(). Neither does
QEMU.
That may break qemu:
$ qemu-system-riscv64 -cpu rv64 -machine virt,accel=kvm
qemu-system-riscv64: Unable to read ISA_EXT KVM register ssaia, error -1
Which QEMU version are you using? This is a problem that was fixed upstream by:
commit 608bdebb6075b757e5505f6bbc60c45a54a1390b
Author: Daniel Henrique Barboza <dbarboza@xxxxxxxxxxxxxxxx>
Date: Tue Oct 3 10:21:48 2023 -0300
target/riscv/kvm: support KVM_GET_REG_LIST
If you're getting this error with upstream QEMU let me know and I'll take a look
there.
Thanks,
Daniel
