On Thu, Oct 01, 2020 at 09:22:33AM +0200, Thomas Huth wrote: > /home/travis/build/huth/kvm-unit-tests/lib/arm64/spinlock.c:29:12: error: > value size does not match register size specified by the constraint and > modifier [-Werror,-Wasm-operand-widths] > : "=&r" (val), "=&r" (fail) > ^ > /home/travis/build/huth/kvm-unit-tests/lib/arm64/spinlock.c:27:9: note: use > constraint modifier "w" > " mov %0, #1\n" > ^~ > %w0 > > Use the "w" modifier as suggested to fix the issue. > > Signed-off-by: Thomas Huth <thuth@xxxxxxxxxx> > --- > lib/arm64/spinlock.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/lib/arm64/spinlock.c b/lib/arm64/spinlock.c > index fac4fc9..258303d 100644 > --- a/lib/arm64/spinlock.c > +++ b/lib/arm64/spinlock.c > @@ -24,7 +24,7 @@ void spin_lock(struct spinlock *lock) > asm volatile( > "1: ldaxr %w0, [%2]\n" > " cbnz %w0, 1b\n" > - " mov %0, #1\n" > + " mov %w0, #1\n" > " stxr %w1, %w0, [%2]\n" > : "=&r" (val), "=&r" (fail) > : "r" (&lock->v) > -- > 2.18.2 > Reviewed-by: Andrew Jones <drjones@xxxxxxxxxx> Tested-by: Andrew Jones <drjones@xxxxxxxxxx>
