-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 On 19/02/2016 18:54, Valdis.Kletnieks@xxxxxx wrote: > la can get changed here - but there's 2 cases to consider. If it's > in a 32-bit kernel, anding with -1 is a no-op. > > Now if we're on a 64-bit kernel, the 'and' clears the high 32 > bits. > > But under what conditions is 'la' a 64-bit quantity that has any > bits set in the high 32 bits (meaning it's a pointer to something > over the 4G line) - but it's still valid to smash those bits? That can happen for example if there is a non-zero segment base. Then the linear address wraps at 4G. Paolo -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJWx1cxAAoJEL/70l94x66DFBcIAIkWZ7KaTyh3gfy5Cur7aukA 8NkEKvxZxO46lQAiKxf5ORTdBCdtZDjUjbxTVJoguITK/nnXuBLQIP/aeDhfHdhz BTYumgH+QV+kmZfn7mwgY5omS05Qx08DmdpQ1jyu1Y1aPVBv6FlsoWcHFrA+oXI2 wtit0OejbPJ9gT4dv1S/etuJvzdINQ/Y4fh/ulkyJJRIw5vvEgW+PN81UNCiSust w1zkljlfoU4he54IWHa0R1Am/uQBmWRuhvzaMZVKdkGlrN/jJo4ObR5DX+qPujPB sGSw2HTh8p4IuLwAJ0PvZZPNag+6vdOv9jxJuFpRNQGZLYY5eHL1IFVHaESv0vQ= =ssTD -----END PGP SIGNATURE----- -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
