diff options
| author | Zhenyu Wang <zhenyuw@linux.intel.com> | 2016-12-27 09:47:04 +0300 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-02-07 12:21:44 +0300 |
| commit | 3de49a7314c9e17d71e97af4ed4b0564609e9ba7 (patch) | |
| tree | 4162dd5249dcd201d4623b735239d94dba5397dd /drivers/gpu/drm/i915/gvt/kvmgt.c | |
| parent | d2896e34eb6f10b4f76b42df34b7e075b203c5ff (diff) | |
| download | linux-3de49a7314c9e17d71e97af4ed4b0564609e9ba7.tar.xz | |
drm/i915/gvt: remove detect_host() MPT hook
We only depend on pvinfo register for GVT-g state detection,
not require hypervisor host detect any more.
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/kvmgt.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/kvmgt.c | 32 |
1 files changed, 0 insertions, 32 deletions
diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index f29d2a27ccb1..080ca77abd22 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -1248,37 +1248,6 @@ static void kvmgt_page_track_flush_slot(struct kvm *kvm, spin_unlock(&kvm->mmu_lock); } -static bool kvmgt_check_guest(void) -{ - unsigned int eax, ebx, ecx, edx; - char s[12]; - unsigned int *i; - - eax = KVM_CPUID_SIGNATURE; - ebx = ecx = edx = 0; - - asm volatile ("cpuid" - : "+a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx) - : - : "cc", "memory"); - i = (unsigned int *)s; - i[0] = ebx; - i[1] = ecx; - i[2] = edx; - - return !strncmp(s, "KVMKVMKVM", strlen("KVMKVMKVM")); -} - -/** - * NOTE: - * It's actually impossible to check if we are running in KVM host, - * since the "KVM host" is simply native. So we only dectect guest here. - */ -static int kvmgt_detect_host(void) -{ - return kvmgt_check_guest() ? -ENODEV : 0; -} - static bool __kvmgt_vgpu_exist(struct intel_vgpu *vgpu, struct kvm *kvm) { struct intel_vgpu *itr; @@ -1453,7 +1422,6 @@ static unsigned long kvmgt_virt_to_pfn(void *addr) } struct intel_gvt_mpt kvmgt_mpt = { - .detect_host = kvmgt_detect_host, .host_init = kvmgt_host_init, .host_exit = kvmgt_host_exit, .attach_vgpu = kvmgt_attach_vgpu, |