[Lguest] [PATCH v2 0/2] x86: paravirt related cleanup

[Rusty Russell]

- Xen doesn't need a custom patching function, it can use
paravirt_patch_default()
- Remove lguest completely from the tree. A LKML mail asking for any
users 3 months ago did not reveal any need for keeping lguest [1].

Shit, I didn't see that mail :(

Posting on lkml is a terrible way to find users (you should generally
remove the config option, wait a year, then see, as that gives end users
time to find it).

In this case though, I think it's time. I intended for it to be removed
with the paravirt infrastructure itself, but I think that's getting
closer anyway.

In case the patches make it to the tree there is quite some potential
for further simplification of paravirt stuff. Especially most of the
pv operations can be put under the CONFIG_XEN_PV umbrella.
- drop patch 3 (removal of vsmp support)
- patch 1: remove even more stuff no longer needed without xen_patch()
(Peter Zijlstra)
[1]: https://lkml.org/lkml/2017/5/15/502
paravirt,xen: remove xen_patch()
x86/lguest: remove lguest support
MAINTAINERS | 11 -
arch/x86/Kbuild | 3 -
arch/x86/Kconfig | 2 -
arch/x86/include/asm/lguest.h | 91 -
arch/x86/include/asm/lguest_hcall.h | 74 -
arch/x86/include/asm/processor.h | 2 +-
arch/x86/include/uapi/asm/bootparam.h | 2 +-
arch/x86/kernel/asm-offsets_32.c | 20 -
arch/x86/kernel/head_32.S | 2 -
arch/x86/kernel/platform-quirks.c | 1 -
arch/x86/kvm/Kconfig | 1 -
arch/x86/lguest/Kconfig | 14 -
arch/x86/lguest/Makefile | 2 -
arch/x86/lguest/boot.c | 1558 ---------------
arch/x86/lguest/head_32.S | 192 --
arch/x86/xen/enlighten_pv.c | 59 +-
arch/x86/xen/xen-asm.S | 24 +-
arch/x86/xen/xen-asm.h | 12 -
arch/x86/xen/xen-asm_32.S | 27 +-
arch/x86/xen/xen-asm_64.S | 20 +-
arch/x86/xen/xen-ops.h | 15 +-
drivers/Makefile | 1 -
drivers/block/Kconfig | 2 +-
drivers/char/Kconfig | 2 +-
drivers/char/virtio_console.c | 2 +-
drivers/lguest/Kconfig | 13 -
drivers/lguest/Makefile | 26 -
drivers/lguest/README | 47 -
drivers/lguest/core.c | 398 ----
drivers/lguest/hypercalls.c | 304 ---
drivers/lguest/interrupts_and_traps.c | 706 -------
drivers/lguest/lg.h | 258 ---
drivers/lguest/lguest_user.c | 446 -----
drivers/lguest/page_tables.c | 1239 ------------
drivers/lguest/segments.c | 228 ---
drivers/lguest/x86/core.c | 724 -------
drivers/lguest/x86/switcher_32.S | 388 ----
drivers/net/Kconfig | 2 +-
drivers/tty/hvc/Kconfig | 2 +-
drivers/virtio/Kconfig | 4 +-
include/linux/lguest.h | 73 -
include/linux/lguest_launcher.h | 44 -
include/uapi/linux/virtio_ring.h | 4 +-
tools/Makefile | 11 +-
tools/lguest/.gitignore | 2 -
tools/lguest/Makefile | 14 -
tools/lguest/extract | 58 -
tools/lguest/lguest.c | 3420 ---------------------------------
tools/lguest/lguest.txt | 125 --
49 files changed, 36 insertions(+), 10639 deletions(-)
delete mode 100644 arch/x86/include/asm/lguest.h
delete mode 100644 arch/x86/include/asm/lguest_hcall.h
delete mode 100644 arch/x86/lguest/Kconfig
delete mode 100644 arch/x86/lguest/Makefile
delete mode 100644 arch/x86/lguest/boot.c
delete mode 100644 arch/x86/lguest/head_32.S
delete mode 100644 arch/x86/xen/xen-asm.h
delete mode 100644 drivers/lguest/Kconfig
delete mode 100644 drivers/lguest/Makefile
delete mode 100644 drivers/lguest/README
delete mode 100644 drivers/lguest/core.c
delete mode 100644 drivers/lguest/hypercalls.c
delete mode 100644 drivers/lguest/interrupts_and_traps.c
delete mode 100644 drivers/lguest/lg.h
delete mode 100644 drivers/lguest/lguest_user.c
delete mode 100644 drivers/lguest/page_tables.c
delete mode 100644 drivers/lguest/segments.c
delete mode 100644 drivers/lguest/x86/core.c
delete mode 100644 drivers/lguest/x86/switcher_32.S
delete mode 100644 include/linux/lguest.h
delete mode 100644 include/linux/lguest_launcher.h
delete mode 100644 tools/lguest/.gitignore
delete mode 100644 tools/lguest/Makefile
delete mode 100644 tools/lguest/extract
delete mode 100644 tools/lguest/lguest.c
delete mode 100644 tools/lguest/lguest.txt
--
2.12.3