[PATCH] powerpc: Export kvm_guest static key, for bcachefs six locks

bcachefs's six locks need kvm_guest, via
 ower_on_cpu() ->  vcpu_is_preempted() -> is_kvm_guest()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: linuxppc-dev@lists.ozlabs.org
---
 arch/powerpc/kernel/firmware.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/kernel/firmware.c b/arch/powerpc/kernel/firmware.c
index 20328f72f9f2..8987eee33dc8 100644
--- a/arch/powerpc/kernel/firmware.c
+++ b/arch/powerpc/kernel/firmware.c

@@ -23,6 +23,8 @@ EXPORT_SYMBOL_GPL(powerpc_firmware_features);
 
 #if defined(CONFIG_PPC_PSERIES) || defined(CONFIG_KVM_GUEST)
 DEFINE_STATIC_KEY_FALSE(kvm_guest);
+EXPORT_SYMBOL_GPL(kvm_guest);
+
 int __init check_kvm_guest(void)
 {
 	struct device_node *hyper_node;

-- 
2.40.1

Kent Overstreet [off-list ref] writes:

bcachefs's six locks need kvm_guest, via
 ower_on_cpu() ->  vcpu_is_preempted() -> is_kvm_guest()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: linuxppc-dev@lists.ozlabs.org
---
 arch/powerpc/kernel/firmware.c | 2 ++
 1 file changed, 2 insertions(+)

Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

I'm happy for you to take this via your tree.

cheers

On Thu, Sep 14, 2023 at 12:26:53PM +1000, Michael Ellerman wrote:

Kent Overstreet [off-list ref] writes:

quoted

bcachefs's six locks need kvm_guest, via
 ower_on_cpu() ->  vcpu_is_preempted() -> is_kvm_guest()

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: linuxppc-dev@lists.ozlabs.org
---
 arch/powerpc/kernel/firmware.c | 2 ++
 1 file changed, 2 insertions(+)

Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)

I'm happy for you to take this via your tree.

Thanks!