Re: [PATCH] x86/entry/ia32: Ensure s32 is sign extended to s64
From: Florian Weimer <hidden>
Date: 2021-09-27 18:51:36
Also in:
linux-s390, lkml, ltp
* Richard Palethorpe:
+#define __SC_COMPAT_CAST(t, a) \ + (__typeof(__builtin_choose_expr(__TYPE_IS_L(t), 0, 0U))) \ + (unsigned int)a
So this casts to int (triggering sign extension) if the type on the 64-bit kernel side is long? But not in other cases (unsigned long, pointer)? Just double-checking. Thanks, Florian