rebase patches on top of Ubuntu-6.2.0-39.40

[pve-kernel.git] / patches / kernel / 0013-Revert-nSVM-Check-for-reserved-encodings-of-TLB_CONT.patch

diff --git a/patches/kernel/0013-Revert-nSVM-Check-for-reserved-encodings-of-TLB_CONT.patch b/patches/kernel/0013-Revert-nSVM-Check-for-reserved-encodings-of-TLB_CONT.patch
new file mode 100644 (file)
index 0000000..2ad8c3a
--- /dev/null
+++ b/patches/kernel/0013-Revert-nSVM-Check-for-reserved-encodings-of-TLB_CONT.patch
@@ -0,0 +1,46 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: Stefan Sterz <s.sterz@proxmox.com>
+Date: Wed, 18 Oct 2023 10:45:45 +0200
+Subject: [PATCH] Revert "nSVM: Check for reserved encodings of TLB_CONTROL in
+ nested VMCB"
+
+This reverts commit 174a921b6975ef959dd82ee9e8844067a62e3ec1.
+
+Signed-off-by: Stefan Sterz <s.sterz@proxmox.com>
+---
+ arch/x86/kvm/svm/nested.c | 15 ---------------
+ 1 file changed, 15 deletions(-)
+
+diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c
+index add65dd59756..61a6c0235519 100644
+--- a/arch/x86/kvm/svm/nested.c
++++ b/arch/x86/kvm/svm/nested.c
+@@ -242,18 +242,6 @@ static bool nested_svm_check_bitmap_pa(struct kvm_vcpu *vcpu, u64 pa, u32 size)
+           kvm_vcpu_is_legal_gpa(vcpu, addr + size - 1);
+ }
+ 
+-static bool nested_svm_check_tlb_ctl(struct kvm_vcpu *vcpu, u8 tlb_ctl)
+-{
+-      /* Nested FLUSHBYASID is not supported yet.  */
+-      switch(tlb_ctl) {
+-              case TLB_CONTROL_DO_NOTHING:
+-              case TLB_CONTROL_FLUSH_ALL_ASID:
+-                      return true;
+-              default:
+-                      return false;
+-      }
+-}
+-
+ static bool __nested_vmcb_check_controls(struct kvm_vcpu *vcpu,
+                                        struct vmcb_ctrl_area_cached *control)
+ {
+@@ -273,9 +261,6 @@ static bool __nested_vmcb_check_controls(struct kvm_vcpu *vcpu,
+                                          IOPM_SIZE)))
+               return false;
+ 
+-      if (CC(!nested_svm_check_tlb_ctl(vcpu, control->tlb_ctl)))
+-              return false;
+-
+       return true;
+ }
+