linux/arch/x86
Joao Martins 23200b7a30 KVM: x86/xen: intercept xen hypercalls if enabled
Add a new exit reason for emulator to handle Xen hypercalls.

Since this means KVM owns the ABI, dispense with the facility for the
VMM to provide its own copy of the hypercall pages; just fill them in
directly using VMCALL/VMMCALL as we do for the Hyper-V hypercall page.

This behaviour is enabled by a new INTERCEPT_HCALL flag in the
KVM_XEN_HVM_CONFIG ioctl structure, and advertised by the same flag
being returned from the KVM_CAP_XEN_HVM check.

Rename xen_hvm_config() to kvm_xen_write_hypercall_page() and move it
to the nascent xen.c while we're at it, and add a test case.

Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
2021-02-04 14:18:45 +00:00
..
boot EFI updates collected by Ard Biesheuvel: 2020-12-24 12:40:07 -08:00
configs * A defconfig fix, from Daniel Díaz. 2020-09-20 15:06:43 -07:00
crypto Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2020-12-14 12:18:19 -08:00
entry epoll: wire up syscall epoll_pwait2 2020-12-19 11:18:38 -08:00
events Perf updates: 2020-12-14 17:34:12 -08:00
hyperv hyperv-fixes for 5.10-rc3 2020-11-05 11:32:03 -08:00
ia32 x86/ia32_signal: Propagate __user annotation properly 2020-12-11 19:44:31 +01:00
include KVM: x86/xen: intercept xen hypercalls if enabled 2021-02-04 14:18:45 +00:00
kernel x86/reboot: Force all cpus to exit VMX root if VMX is supported 2021-02-04 05:27:31 -05:00
kvm KVM: x86/xen: intercept xen hypercalls if enabled 2021-02-04 14:18:45 +00:00
lib Scheduler updates: 2020-12-14 18:29:11 -08:00
math-emu treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mm KVM: SVM: Treat SVM as unsupported when running as an SEV guest 2021-02-03 04:30:37 -05:00
net bpf: x64: Do not emit sub/add 0, %rsp when !stack_depth 2020-09-29 16:47:39 -07:00
oprofile x86/oprofile: Avoid TIF_IA32 when checking 64bit mode 2020-10-26 13:46:46 +01:00
pci ARM: SoC drivers for v5.11 2020-12-16 16:38:41 -08:00
platform Yet another large set of x86 interrupt management updates: 2020-12-14 18:59:53 -08:00
power
purgatory crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
ras
realmode x86/head/64: Don't call verify_cpu() on starting APs 2020-09-09 11:33:20 +02:00
tools x86/insn: Make inat-tables.c suitable for pre-decompression code 2020-09-07 19:45:24 +02:00
um arch/um: partially revert the conversion to __section() macro 2020-10-26 15:39:37 -07:00
video
xen EFI updates collected by Ard Biesheuvel: 2020-12-24 12:40:07 -08:00
.gitignore
Kbuild
Kconfig fanotify: Fix sys_fanotify_mark() on native x86-32 2020-12-28 11:58:59 +01:00
Kconfig.assembler
Kconfig.cpu
Kconfig.debug x86, libnvdimm/test: Remove COPY_MC_TEST 2020-10-26 18:08:35 +01:00
Makefile - Fix the vmlinux size check on 64-bit along with adding useful clarifications on the topic 2020-12-14 13:54:50 -08:00
Makefile_32.cpu
Makefile.um