-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 6/5/07, Neo Jia wrote:
hi, I just found the code in 2.6.17 under function enable_sep_cpu, which is going to setup the esp1 as "tss->esp1 = sizeof(struct tss_struct) + (unsigned long) tss;", which will be used as a privilege stack when calling sysenter. I noticed that there is unsigned long stack[64] at the bottom of struct tss_struct, which works as an emergency stack. Are we just going to use that once as the kernel stack for sysenter? If yes, will that be a problem since the stack is only 256 bytes?
When do we actually use emregency stack? Is it used for stack unwinding when we hit a panic or something like that? Any help? Thanks - --psr -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: http://firegpg.tuxfamily.org iD8DBQFGZjA0ky6Gd9lpXlERAsHPAJ0Ynoo5jUD3/ScoHHdVXjn7fSbL0gCbBg+o Kerk3eOjayi1uFsMj/R0Ekk= =WB2j -----END PGP SIGNATURE-----
Thanks, Neo -- I would remember that if researchers were not ambitious probably today we haven't the technology we are using! -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
-- play the game -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
