Vitaly Kuznetsov 8f014550df KVM: x86: hyper-v: Make Hyper-V emulation enablement conditional ... Hyper-V emulation is enabled in KVM unconditionally. This is bad at least from security standpoint as it is an extra attack surface. Ideally, there should be a per-VM capability explicitly enabled by VMM but currently it is not the case and we can't mandate one without breaking backwards compatibility. We can, however, check guest visible CPUIDs and only enable Hyper-V emulation when "Hv#1" interface was exposed in HYPERV_CPUID_INTERFACE. Note, VMMs are free to act in any sequence they like, e.g. they can try to set MSRs first and CPUIDs later so we still need to allow the host to read/write Hyper-V specific MSRs unconditionally. Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com> Message-Id: <20210126134816.1880136-14-vkuznets@redhat.com> [Add selftest vcpu_set_hv_cpuid API to avoid breaking xen_vmcall_test. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-02-09 08:39:56 -05:00
..
arm64	kselftest/arm64: check GCR_EL1 after context switch	2020-12-22 12:55:08 -08:00
bpf	Merge https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf	2021-01-07 15:10:27 -08:00
breakpoints	selftests: breakpoints: do not use ksft_exit_skip after ksft_set_plan	2020-07-06 15:47:48 -06:00
capabilities
cgroup	selftests/cgroup: Fix build on older distros	2020-11-10 15:13:25 -07:00
clone3	selftests/clone3: Fix build error	2020-12-07 14:34:55 -07:00
core	selftests/core: add regression test for CLOSE_RANGE_UNSHARE | CLOSE_RANGE_CLOEXEC	2020-12-19 16:23:19 +01:00
cpu-hotplug
cpufreq
dma	selftests/dma: add test application for DMA_MAP_BENCHMARK	2020-11-27 10:33:42 +01:00
dmabuf-heaps
drivers	Networking fixes for 5.11-rc3, including fixes from netfilter, wireless	2021-01-05 12:38:56 -08:00
efivarfs
exec	tools/testing/selftests: add self-test for verifying load alignment	2020-10-16 11:11:21 -07:00
filesystems	selftests/filesystems: expand epoll with epoll_pwait2	2020-12-19 11:18:38 -08:00
firmware	linux-kselftest-next-5.10-rc1	2020-10-15 15:14:32 -07:00
fpu
ftrace	selftests/ftrace: check for do_sys_openat2 in user-memory test	2020-10-27 16:45:51 -06:00
futex
gpio	selftests/gpio: Add to CLEAN rule rather than overriding	2020-11-10 14:40:13 -07:00
ia64
intel_pstate	selftests: intel_pstate: ftime() is deprecated	2020-11-10 14:41:32 -07:00
ipc
ir
kcmp
kexec
kmod	selftests: kmod: use variable NAME in kmod_test_0001()	2020-08-12 10:58:01 -07:00
kselftest	tweewide: Fix most Shebang lines	2020-12-08 23:30:04 +09:00
kvm	KVM: x86: hyper-v: Make Hyper-V emulation enablement conditional	2021-02-09 08:39:56 -05:00
lib
livepatch	selftests/livepatch: Do not check order when using "comm" for dmesg checking	2020-08-27 15:27:24 +02:00
lkdtm	powerpc updates for 5.11	2020-12-17 13:34:25 -08:00
locking
media_tests
membarrier
memfd	selftests/memfd: Fix implicit declaration warnings	2020-11-10 14:42:04 -07:00
memory-hotplug
mincore	selftests: add mincore() tests	2020-08-07 11:33:27 -07:00
mount	selftests: mount: add nosymfollow tests	2020-08-27 16:06:47 -04:00
mqueue
net	selftests: fib_nexthops: Fix wrong mausezahn invocation	2021-01-07 18:47:19 -08:00
netfilter	selftests: netfilter: add selftest for ipip pmtu discovery with enabled connection tracking	2021-01-07 14:42:31 -08:00
nsfs
ntb
openat2	selftests: openat2: add RESOLVE_ conflict test	2020-12-03 10:16:28 +01:00
pid_namespace	selftests: Remove unneeded selftest API headers	2020-07-06 15:59:07 -06:00
pidfd	selftests: pidfd: drop needless linux/kcmp.h inclusion in pidfd_setns_test.c	2020-10-27 17:04:01 -06:00
powerpc	selftests/powerpc: Fix uninitialized variable warning	2020-12-04 01:01:21 +11:00
prctl
proc	selftests: proc: fix warning: _GNU_SOURCE redefined	2020-11-05 10:08:14 -07:00
pstore
ptp	testptp: add new options for perout phase and pulse width	2020-07-20 18:04:59 -07:00
ptrace	selftests: Add missing gitignore entries	2020-09-23 10:19:25 -06:00
rcutorture	Merge branches 'cpuinfo.2020.11.06a', 'doc.2020.11.06a', 'fixes.2020.11.19b', 'lockdep.2020.11.02a', 'tasks.2020.11.06a' and 'torture.2020.11.06a' into HEAD	2020-11-19 19:37:47 -08:00
resctrl
rseq	rseq/selftests: Fix MEMBARRIER_CMD_PRIVATE_EXPEDITED_RSEQ build error under other arch.	2020-12-07 14:09:45 -07:00
rtc
safesetid
seccomp	selftests/seccomp: Update kernel config	2020-12-02 11:20:54 -08:00
sgx	selftests/sgx: Use a statically generated 3072-bit RSA key	2020-11-18 18:26:00 +01:00
sigaltstack	selftests: sigaltstack: do not use ksft_exit_skip after ksft_set_plan	2020-07-06 15:57:15 -06:00
size
sparc64
splice	selftests: splice: Check behavior of full and short splices	2020-08-07 10:50:11 -07:00
static_keys
sync	selftests: sync_test: do not use ksft_exit_skip after ksft_set_plan	2020-07-06 15:57:28 -06:00
syscall_user_dispatch	selftests: Add benchmark for syscall user dispatch	2020-12-02 15:07:57 +01:00
sysctl
tc-testing	tweewide: Fix most Shebang lines	2020-12-08 23:30:04 +09:00
timens	selftests/timens: added selftest for /proc/stat btime	2020-11-03 11:05:40 +01:00
timers	selftests/timers: Turn off timeout setting	2020-08-20 15:49:28 -06:00
tmpfs
tpm2	selftests: tpm: upgrade TPM2 tests from Python 2 to Python 3	2020-07-06 14:20:35 -06:00
uevent	selftests: Remove unneeded selftest API headers	2020-07-06 15:59:07 -06:00
user
vDSO	selftests/vDSO: fix -Wformat warning in vdso_test_correctness	2021-01-04 09:25:45 -07:00
vm	selftests/vm: fix building protection keys test	2020-12-29 15:36:49 -08:00
watchdog
wireguard	Compiler Attributes: remove CONFIG_ENABLE_MUST_CHECK	2020-12-02 13:47:17 +01:00
x86	linux-kselftest-next-5.11-rc1	2020-12-16 00:17:58 -08:00
zram
.gitignore
gen_kselftest_tar.sh
kselftest_deps.sh
kselftest_harness.h	linux-kselftest-fixes-5.10-rc3	2020-11-06 15:42:42 -08:00
kselftest_install.sh
kselftest_module.h
kselftest.h	linux-kselftest-5.9-rc1	2020-08-05 10:28:25 -07:00
lib.mk	selftests: filter kselftest headers from command in lib.mk	2020-10-27 16:51:06 -06:00
Makefile	linux-kselftest-next-5.11-rc1	2020-12-16 00:17:58 -08:00
run_kselftest.sh	selftests/run_kselftest.sh: fix dry-run typo	2020-11-10 14:51:39 -07:00