Merge branch kvm-arm64/fgt-masks into kvmarm-master/next

* kvm-arm64/fgt-masks: (43 commits)
  : .
  : Large rework of the way KVM deals with trap bits in conjunction with
  : the CPU feature registers. It now draws a direct link between which
  : the feature set, the system registers that need to UNDEF to match
  : the configuration and bits that need to behave as RES0 or RES1 in
  : the trap registers that are visible to the guest.
  :
  : Best of all, these definitions are mostly automatically generated
  : from the JSON description published by ARM under a permissive
  : license.
  : .
  KVM: arm64: Handle TSB CSYNC traps
  KVM: arm64: Add FGT descriptors for FEAT_FGT2
  KVM: arm64: Allow sysreg ranges for FGT descriptors
  KVM: arm64: Add context-switch for FEAT_FGT2 registers
  KVM: arm64: Add trap routing for FEAT_FGT2 registers
  KVM: arm64: Add sanitisation for FEAT_FGT2 registers
  KVM: arm64: Add FEAT_FGT2 registers to the VNCR page
  KVM: arm64: Use HCR_EL2 feature map to drive fixed-value bits
  KVM: arm64: Use HCRX_EL2 feature map to drive fixed-value bits
  KVM: arm64: Allow kvm_has_feat() to take variable arguments
  KVM: arm64: Use FGT feature maps to drive RES0 bits
  KVM: arm64: Validate FGT register descriptions against RES0 masks
  KVM: arm64: Switch to table-driven FGU configuration
  KVM: arm64: Handle PSB CSYNC traps
  KVM: arm64: Use KVM-specific HCRX_EL2 RES0 mask
  KVM: arm64: Remove hand-crafted masks for FGT registers
  KVM: arm64: Use computed FGT masks to setup FGT registers
  KVM: arm64: Propagate FGT masks to the nVHE hypervisor
  KVM: arm64: Unconditionally configure fine-grain traps
  KVM: arm64: Use computed masks as sanitisers for FGT registers
  ...

Signed-off-by: Marc Zyngier <maz@kernel.org>

1 files changed, 13 insertions, 0 deletions

diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 6c42682bc66f..3b118dabfb82 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -2450,6 +2450,19 @@ static void kvm_hyp_init_symbols(void)
 	kvm_nvhe_sym(__icache_flags) = __icache_flags;
 	kvm_nvhe_sym(kvm_arm_vmid_bits) = kvm_arm_vmid_bits;
 
+	/* Propagate the FGT state to the the nVHE side */
+	kvm_nvhe_sym(hfgrtr_masks)  = hfgrtr_masks;
+	kvm_nvhe_sym(hfgwtr_masks)  = hfgwtr_masks;
+	kvm_nvhe_sym(hfgitr_masks)  = hfgitr_masks;
+	kvm_nvhe_sym(hdfgrtr_masks) = hdfgrtr_masks;
+	kvm_nvhe_sym(hdfgwtr_masks) = hdfgwtr_masks;
+	kvm_nvhe_sym(hafgrtr_masks) = hafgrtr_masks;
+	kvm_nvhe_sym(hfgrtr2_masks) = hfgrtr2_masks;
+	kvm_nvhe_sym(hfgwtr2_masks) = hfgwtr2_masks;
+	kvm_nvhe_sym(hfgitr2_masks) = hfgitr2_masks;
+	kvm_nvhe_sym(hdfgrtr2_masks)= hdfgrtr2_masks;
+	kvm_nvhe_sym(hdfgwtr2_masks)= hdfgwtr2_masks;
+
 	/*
 	 * Flush entire BSS since part of its data containing init symbols is read
 	 * while the MMU is off.