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KVM: arm64: Add endian casting to kvm_swap_s[12]_desc()

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Keep sparse quiet by explicitly casting endianness conversion
when swapping S1 and S2 descriptors.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202511260246.JQDGsQKa-lkp@intel.com/
Closes: https://lore.kernel.org/oe-kbuild-all/202511260344.9XehvH5Q-lkp@intel.com/
Fixes: c59ca4b5b0c3f ("KVM: arm64: Implement HW access flag management in stage-1 SW PTW")
Fixes: 39db933ba67f8 ("KVM: arm64: nv: Implement HW access flag management in stage-2 SW PTW")
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://msgid.link/20251125204848.1136383-1-maz@kernel.org
Signed-off-by: Oliver Upton <oupton@kernel.org>
This commit is contained in:
Marc Zyngier 2025-11-25 20:48:48 +00:00 committed by Oliver Upton
parent 36fe022f88
commit b0fc8329ec
2 changed files with 8 additions and 8 deletions
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8
arch/arm64/kvm/at.c
View File

@ -386,11 +386,11 @@ static int kvm_swap_s1_desc(struct kvm_vcpu *vcpu, u64 pa, u64 old, u64 new,
struct s1_walk_info *wi)
{
if (wi->be) {
old = cpu_to_be64(old);
new = cpu_to_be64(new);
old = (__force u64)cpu_to_be64(old);
new = (__force u64)cpu_to_be64(new);
} else {
old = cpu_to_le64(old);
new = cpu_to_le64(new);
old = (__force u64)cpu_to_le64(old);
new = (__force u64)cpu_to_le64(new);
}
return __kvm_at_swap_desc(vcpu->kvm, pa, old, new);

8
arch/arm64/kvm/nested.c
View File

@ -224,11 +224,11 @@ static int swap_guest_s2_desc(struct kvm_vcpu *vcpu, phys_addr_t pa, u64 old, u6
struct s2_walk_info *wi)
{
if (wi->be) {
old = cpu_to_be64(old);
new = cpu_to_be64(new);
old = (__force u64)cpu_to_be64(old);
new = (__force u64)cpu_to_be64(new);
} else {
old = cpu_to_le64(old);
new = cpu_to_le64(new);
old = (__force u64)cpu_to_le64(old);
new = (__force u64)cpu_to_le64(new);
}
return __kvm_at_swap_desc(vcpu->kvm, pa, old, new);