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KVM: s390: Add explicit padding to struct kvm_s390_keyop 

The newly added structure causes a warning about implied padding:

./usr/include/linux/kvm.h:1247:1: error: padding struct size to alignment boundary with 6 bytes [-Werror=padded]

The padding can lead to leaking kernel data and ABI incompatibilies
when used on x86. Neither of these is a problem in this specific
patch, but it's best to avoid it and use explicit padding fields
in general.

Fixes: 0ee4ddc164 ("KVM: s390: Storage key manipulation IOCTL")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Claudio Imbrenda <imbrenda@linux.ibm.com>
This commit is contained in:
Arnd Bergmann 2026-02-06 10:17:30 +01:00 committed by Claudio Imbrenda
parent 52940a34a8
commit f7ab71f178
1 changed files with 1 additions and 0 deletions
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include/uapi/linux/kvm.h
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@ -1227,6 +1227,7 @@ struct kvm_s390_keyop {
__u64 guest_addr;
__u8 key;
__u8 operation;
__u8 pad[6];
};
/*