From: Oliver Upton <oliver.upton@linux.dev> mainline inclusion from mainline-v6.15-rc2 commit acfcaf90db1fa833236d9f8249b6099cf638e5d1 category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/IBN3WI Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h... ---------------------------------------------------------------------- The ABI of the hypercall requires that R2 and R3 are 0. Explicitly pass 0 for these parameters. Cc: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Fixes: 86edf6bdcf05 ("smccc/kvm_guest: Enable errata based on implementation CPUs") Reviewed-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com> Link: https://lore.kernel.org/r/20250327163613.2516073-1-oliver.upton@linux.dev Signed-off-by: Oliver Upton <oliver.upton@linux.dev> --- drivers/firmware/smccc/kvm_guest.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/firmware/smccc/kvm_guest.c b/drivers/firmware/smccc/kvm_guest.c index 5f52751a664d..3b9fb6b6ae0e 100644 --- a/drivers/firmware/smccc/kvm_guest.c +++ b/drivers/firmware/smccc/kvm_guest.c @@ -92,7 +92,7 @@ void __init kvm_arm_target_impl_cpu_init(void) for (i = 0; i < max_cpus; i++) { arm_smccc_1_1_invoke(ARM_SMCCC_VENDOR_HYP_KVM_DISCOVER_IMPL_CPUS_FUNC_ID, - i, &res); + i, 0, 0, &res); if (res.a0 != SMCCC_RET_SUCCESS) { pr_warn("Discovering target implementation CPUs failed\n"); goto mem_free; -- 2.33.0