Convert %llx to %lx as appropriate in guest asserts. The guest printf
implementation treats them the same as KVM selftests are 64-bit only, but
strictly adhering to the correct format will allow annotating the
underlying helpers with __printf() without introducing new warnings in the
build.
Link: https://lore.kernel.org/r/20231129224916.532431-3-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
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