The nVHE hypervisor needs to have access to its own view of the FGT
masks, which unfortunately results in a bit of data duplication.
Signed-off-by: Marc Zyngier <maz@xxxxxxxxxx>
---
arch/arm64/include/asm/kvm_host.h | 7 +++++++
arch/arm64/kvm/arm.c | 8 ++++++++
arch/arm64/kvm/hyp/nvhe/switch.c | 7 +++++++
3 files changed, 22 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 4e67d4064f409..7220382aeb9dc 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -583,6 +583,13 @@ extern struct fgt_masks hdfgrtr_masks;
extern struct fgt_masks hdfgwtr_masks;
extern struct fgt_masks hafgrtr_masks;
+extern struct fgt_masks kvm_nvhe_sym(hfgrtr_masks);
+extern struct fgt_masks kvm_nvhe_sym(hfgwtr_masks);
+extern struct fgt_masks kvm_nvhe_sym(hfgitr_masks);
+extern struct fgt_masks kvm_nvhe_sym(hdfgrtr_masks);
+extern struct fgt_masks kvm_nvhe_sym(hdfgwtr_masks);
+extern struct fgt_masks kvm_nvhe_sym(hafgrtr_masks);
+
struct kvm_cpu_context {
struct user_pt_regs regs; /* sp = sp_el0 */
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 071a7d75be689..0747ab90fc283 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -2414,6 +2414,14 @@ 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;
+
/*
* Flush entire BSS since part of its data containing init symbols is read
* while the MMU is off.
diff --git a/arch/arm64/kvm/hyp/nvhe/switch.c b/arch/arm64/kvm/hyp/nvhe/switch.c
index 6c846d033d24a..2add6e4c33f1e 100644
--- a/arch/arm64/kvm/hyp/nvhe/switch.c
+++ b/arch/arm64/kvm/hyp/nvhe/switch.c
@@ -33,6 +33,13 @@ DEFINE_PER_CPU(struct kvm_host_data, kvm_host_data);
DEFINE_PER_CPU(struct kvm_cpu_context, kvm_hyp_ctxt);
DEFINE_PER_CPU(unsigned long, kvm_hyp_vector);
+struct fgt_masks hfgrtr_masks;
+struct fgt_masks hfgwtr_masks;
+struct fgt_masks hfgitr_masks;
+struct fgt_masks hdfgrtr_masks;
+struct fgt_masks hdfgwtr_masks;
+struct fgt_masks hafgrtr_masks;
+
extern void kvm_nvhe_prepare_backtrace(unsigned long fp, unsigned long pc);
static void __activate_cptr_traps(struct kvm_vcpu *vcpu)
--
2.39.2
