[PATCH AUTOSEL 6.3 07/17] arm64/hyperv: Use CPUHP_AP_HYPERV_ONLINE state to fix CPU online sequencing

From: Sasha Levin
Date: Thu Jun 29 2023 - 15:02:15 EST


From: Michael Kelley <mikelley@xxxxxxxxxxxxx>

[ Upstream commit 52ae076c3a9b366b6fa9f7c7e67aed8b28716ed9 ]

State CPUHP_AP_HYPERV_ONLINE has been introduced to correctly sequence the
initialization of hyperv_pcpu_input_arg. Use this new state for Hyper-V
initialization so that hyperv_pcpu_input_arg is allocated early enough.

Signed-off-by: Michael Kelley <mikelley@xxxxxxxxxxxxx>
Reviewed-by: Dexuan Cui <decui@xxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/1684862062-51576-2-git-send-email-mikelley@xxxxxxxxxxxxx
Signed-off-by: Wei Liu <wei.liu@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/arm64/hyperv/mshyperv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/hyperv/mshyperv.c b/arch/arm64/hyperv/mshyperv.c
index a406454578f07..f1b8a04ee9f26 100644
--- a/arch/arm64/hyperv/mshyperv.c
+++ b/arch/arm64/hyperv/mshyperv.c
@@ -67,7 +67,7 @@ static int __init hyperv_init(void)
if (ret)
return ret;

- ret = cpuhp_setup_state(CPUHP_AP_ONLINE_DYN, "arm64/hyperv_init:online",
+ ret = cpuhp_setup_state(CPUHP_AP_HYPERV_ONLINE, "arm64/hyperv_init:online",
hv_common_cpu_init, hv_common_cpu_die);
if (ret < 0) {
hv_common_free();
--
2.39.2