-----Original Message----- From: Robert Love [mailto:rml@xxxxxxxxxx] Sent: Saturday, October 16, 2004 1:46 AM To: Perfect Stranger Cc: Kernel newbies Subject: Re: disabling/masking interrupts > 2- can non-maskable interrupts be disabled (in the case that the two > operations (disable/mask) are not the same) ? >No. Well, atleast in the case of x86, the NMI interrupt can be masked using one of the I/O port bits (i think port num 0x70 or 0x71). > 3- how can disabled interrupts be unlost ?? and how do the PIC sends > them again to the CPU as they are enabled again ? >No, they are not lost. They are queued in the interrupt controller and >they pop when you re-enable interrupts. This is true only for level triggered interrupts and not for edge triggered, right ? -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/ -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
