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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2023-12-05 11:36:16 +0100 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2023-12-07 09:34:01 -0800 |
| commit | cfef5af3cb0e57501dcac2816ab11a20c074866d (patch) | |
| tree | f1acfb6f3b3c37ff9e0c05544e789c76886e6a78 /arch/x86/include | |
| parent | 87562052c965ba7de6dc490434e53691fe46c898 (diff) | |
| download | linux-stable-cfef5af3cb0e57501dcac2816ab11a20c074866d.tar.gz linux-stable-cfef5af3cb0e57501dcac2816ab11a20c074866d.tar.bz2 linux-stable-cfef5af3cb0e57501dcac2816ab11a20c074866d.zip | |
KVM: x86: Move Hyper-V partition assist page out of Hyper-V emulation context
Hyper-V partition assist page is used when KVM runs on top of Hyper-V and
is not used for Windows/Hyper-V guests on KVM, this means that 'hv_pa_pg'
placement in 'struct kvm_hv' is unfortunate. As a preparation to making
Hyper-V emulation optional, move 'hv_pa_pg' to 'struct kvm_arch' and put it
under CONFIG_HYPERV.
While on it, introduce hv_get_partition_assist_page() helper to allocate
partition assist page. Move the comment explaining why we use a single page
for all vCPUs from VMX and expand it a bit.
No functional change intended.
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Tested-by: Jeremi Piotrowski <jpiotrowski@linux.microsoft.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Link: https://lore.kernel.org/r/20231205103630.1391318-3-vkuznets@redhat.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
Diffstat (limited to 'arch/x86/include')
| -rw-r--r-- | arch/x86/include/asm/kvm_host.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index b0ca65632f2c..86069b985d22 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1125,7 +1125,6 @@ struct kvm_hv { */ unsigned int synic_auto_eoi_used; - struct hv_partition_assist_pg *hv_pa_pg; struct kvm_hv_syndbg hv_syndbg; }; @@ -1447,6 +1446,7 @@ struct kvm_arch { #if IS_ENABLED(CONFIG_HYPERV) hpa_t hv_root_tdp; spinlock_t hv_root_tdp_lock; + struct hv_partition_assist_pg *hv_pa_pg; #endif /* * VM-scope maximum vCPU ID. Used to determine the size of structures |