"Ying Chu" <[EMAIL PROTECTED]> writes: > A simple code running on PIII 800,kernel 2.6.20 with SEP enabled > causes a segmentation fault.
SYSENTER has a hardcoded return address, that is why you cannot be used anywhere but in the vsyscall trampoline. In addition it doesn't work on x86-64 for 32bit processes for AMD. The only system call method supported without the vDSO is int 0x80. Better you just use the vDSO. > More, when i enabled Kdb and set "bp sysenter_entry",it went with a > catastrophic error errupted. The stack and some other kernel state are not set up yet at this point. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
