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ANDROID: KVM: arm64: Reserve all args for req_mmio

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Make unused args for ARM_SMCCC_KVM_FUNC_DEV_REQ_MMIO to be 0 as
they may be used in the future.

Bug: 357781595
Change-Id: Iea52c8b623ef8ee732b4799b395e0a112248d2b9
Signed-off-by: Mostafa Saleh <smostafa@google.com>
This commit is contained in:
Mostafa Saleh
2025-05-14 13:25:51 +00:00
parent 42cfdfb46c
commit e48193bfcf
1 changed files with 3 additions and 2 deletions
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5
arch/arm64/kvm/hyp/nvhe/device/device.c
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@@ -280,8 +280,9 @@ bool pkvm_device_request_mmio(struct pkvm_hyp_vcpu *hyp_vcpu, u64 *exit_code)
u64 token;
s8 level;
/* arg2 and arg3 reserved for future use. */
if (smccc_get_arg2(vcpu) || smccc_get_arg3(vcpu) || !PAGE_ALIGNED(ipa))
/* args 2..6 reserved for future use. */
if (smccc_get_arg2(vcpu) || smccc_get_arg3(vcpu) || smccc_get_arg4(vcpu) ||
smccc_get_arg5(vcpu) || smccc_get_arg6(vcpu) || !PAGE_ALIGNED(ipa))
goto out_inval;
ret = pkvm_get_guest_pa_request(hyp_vcpu, ipa, PAGE_SIZE,