OpenCloudOS-Kernel/arch/x86/hyperv
Sean Christopherson f3e613e72f x86/hyperv: Move required MSRs check to initial platform probing
Explicitly check for MSR_HYPERCALL and MSR_VP_INDEX support when probing
for running as a Hyper-V guest instead of waiting until hyperv_init() to
detect the bogus configuration.  Add messages to give the admin a heads
up that they are likely running on a broken virtual machine setup.

At best, silently disabling Hyper-V is confusing and difficult to debug,
e.g. the kernel _says_ it's using all these fancy Hyper-V features, but
always falls back to the native versions.  At worst, the half baked setup
will crash/hang the kernel.

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Link: https://lore.kernel.org/r/20211104182239.1302956-3-seanjc@google.com
Signed-off-by: Wei Liu <wei.liu@kernel.org>
2021-11-15 12:37:08 +00:00
..
Makefile x86/hyperv: Add new hvcall guest address host visibility support 2021-10-28 11:21:33 +00:00
hv_apic.c x86/hyperv: Avoid erroneously sending IPI to 'self' 2021-10-06 15:56:45 +00:00
hv_init.c x86/hyperv: Move required MSRs check to initial platform probing 2021-11-15 12:37:08 +00:00
hv_proc.c drivers: hv: Create a consistent pattern for checking Hyper-V hypercall status 2021-04-21 09:49:19 +00:00
hv_spinlock.c x86/hyperv: Fix unused variable 'msr_val' warning in hv_qlock_wait 2021-03-24 11:31:04 +00:00
irqdomain.c drivers: hv: Create a consistent pattern for checking Hyper-V hypercall status 2021-04-21 09:49:19 +00:00
ivm.c x86/hyperv: Remove duplicate include 2021-10-28 11:36:34 +00:00
mmu.c The x86 MM changes in this cycle were: 2021-04-29 11:41:43 -07:00
nested.c drivers: hv: Create a consistent pattern for checking Hyper-V hypercall status 2021-04-21 09:49:19 +00:00