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android-kvm / kvmtool / f6108d72e977cce00e7bc824acd1d73da8cc9729
commitf6108d72e977cce00e7bc824acd1d73da8cc9729[log] [tgz]
authorJean-Philippe Brucker <jean-philippe.brucker@arm.com>Fri Nov 03 11:38:41 2017 +0000
committerWill Deacon <will.deacon@arm.com>Fri Nov 03 14:37:00 2017 +0000
treef862a7e0b19036498461a8f1005439f56defa7c1
parent37b8e06be3ce63d4b50a5066446ca0cb5c61ba43 [diff]
Add GICv2m support

GICv2m is a small extension to the GICv2 architecture, specified in the
Server Base System Architecture (SBSA). It adds a set of register to
converts MSIs into SPIs, effectively enabling MSI support for pre-GICv3
platforms.

Implement a GICv2m emulation entirely in userspace. Add a thin translation
layer in irq.c to catch the MSI->SPI routing setup of the guest, and then
transform irqfd injection of MSI into the associated SPI. There shouldn't
be any significant runtime overhead compared to gicv3-its.

The device can be enabled by passing "--irqchip gicv2m" to kvmtool.

Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
10 files changed
tree: f862a7e0b19036498461a8f1005439f56defa7c1
  1. arm/
  2. config/
  3. disk/
  4. Documentation/
  5. guest/
  6. hw/
  7. include/
  8. mips/
  9. net/
  10. powerpc/
  11. tests/
  12. ui/
  13. util/
  14. virtio/
  15. x86/
  16. .gitignore
  17. builtin-balloon.c
  18. builtin-debug.c
  19. builtin-help.c
  20. builtin-list.c
  21. builtin-pause.c
  22. builtin-resume.c
  23. builtin-run.c
  24. builtin-sandbox.c
  25. builtin-setup.c
  26. builtin-stat.c
  27. builtin-stop.c
  28. builtin-version.c
  29. code16gcc.h
  30. COPYING
  31. CREDITS-Git
  32. devices.c
  33. framebuffer.c
  34. guest_compat.c
  35. INSTALL
  36. ioeventfd.c
  37. ioport.c
  38. irq.c
  39. kvm-cmd.c
  40. kvm-cpu.c
  41. kvm-ipc.c
  42. kvm.c
  43. main.c
  44. Makefile
  45. mmio.c
  46. pci.c
  47. README
  48. symbol.c
  49. term.c