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smccc: kvm_guest: Align with DISCOVER_IMPL_CPUS ABI

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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: 86edf6bdcf ("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>
This commit is contained in:
Oliver Upton 2025-03-27 09:36:15 -07:00
parent 369c012268
commit acfcaf90db
1 changed files with 1 additions and 1 deletions
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2
drivers/firmware/smccc/kvm_guest.c
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@ -95,7 +95,7 @@ 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;