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| -rw-r--r-- | open_issues/user-space_device_drivers.mdwn | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/open_issues/user-space_device_drivers.mdwn b/open_issues/user-space_device_drivers.mdwn index 43795705..33e75942 100644 --- a/open_issues/user-space_device_drivers.mdwn +++ b/open_issues/user-space_device_drivers.mdwn @@ -27,6 +27,11 @@ Also see [[device drivers and IO systems]]. * *Omega0* paper defines an interface. + * As is can be read in the *Mach 3 Kernel Principles*, there is an *event + object* facility in Mach that can be used for having user-space tasks react + to IRQs. However, at least in GNU Mach, that code (`kern/eventcount.c`) + doesn't seem functional at all and isn't integrated properly in the kernel. + ## DMA * Security considerations. |