2021-01-19 09:11:06

by Christophe Leroy

Subject: [PATCH] powerpc/kvm: Force selection of CONFIG_PPC_FPU

book3s/32 kvm is designed with the assumption that
an FPU is always present.

Force selection of FPU support in the kernel when
build KVM.

Reported-by: kernel test robot <[email protected]>
Fixes: 7d68c8916950 ("powerpc/32s: Allow deselecting CONFIG_PPC_FPU on mpc832x")
Signed-off-by: Christophe Leroy <[email protected]>
---
arch/powerpc/kvm/Kconfig | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index 549591d9aaa2..e45644657d49 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -54,6 +54,7 @@ config KVM_BOOK3S_32
select KVM
select KVM_BOOK3S_32_HANDLER
select KVM_BOOK3S_PR_POSSIBLE
+ select PPC_FPU
help
Support running unmodified book3s_32 guest kernels
in virtual machines on book3s_32 host processors.
--
2.25.0

2021-02-03 11:46:50

by Michael Ellerman

Subject: Re: [PATCH] powerpc/kvm: Force selection of CONFIG_PPC_FPU

On Tue, 19 Jan 2021 06:36:52 +0000 (UTC), Christophe Leroy wrote:
> book3s/32 kvm is designed with the assumption that
> an FPU is always present.
>
> Force selection of FPU support in the kernel when
> build KVM.

Applied to powerpc/next.

[1/1] powerpc/kvm: Force selection of CONFIG_PPC_FPU
https://git.kernel.org/powerpc/c/27f699579b64dbf27caf31e5c0eac567ec0aa8b8

cheers