mirror of https://github.com/ipxe/ipxe.git
c89a446cf0
As noted in the comments, UEFI manages to combines the all of the worst aspects of both a polling design (inefficiency and inability to sleep until something interesting happens) and of an interrupt-driven design (the complexity of code that could be preempted at any time, thanks to UEFI timers). This causes problems in particular for UEFI USB keyboards: the keyboard driver calls UsbAsyncInterruptTransfer() to set up a periodic timer which is used to poll the USB bus. This poll may interrupt a critical section within iPXE, typically resulting in list corruption and either a hang or reboot. Work around this problem by mirroring the BIOS design, in which we run with interrupts disabled almost all of the time. Signed-off-by: Michael Brown <mcb30@ipxe.org> |
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| arch | ||
| bin | ||
| config | ||
| core | ||
| crypto | ||
| doc | ||
| drivers | ||
| hci | ||
| image | ||
| include | ||
| interface | ||
| libgcc | ||
| net | ||
| scripts | ||
| tests | ||
| usr | ||
| util | ||
| .gitignore | ||
| Makefile | ||
| Makefile.efi | ||
| Makefile.housekeeping | ||
| doxygen.cfg | ||