diff mbox series

[v11,04/43] KVM: arm64: nv: Drop EL12 register traps that are redirected to VNCR

Message ID 20231120131027.854038-5-maz@kernel.org (mailing list archive)
State New, archived
Headers show
Series KVM: arm64: Nested Virtualization support (FEAT_NV2 only) | expand

Commit Message

Marc Zyngier Nov. 20, 2023, 1:09 p.m. UTC 
With FEAT_NV2, a bunch of system register writes are turned into
memory writes. This is specially the fate of the EL12 registers
that the guest hypervisor manipulates out of context.

Remove the trap descriptors for those, as they are never going
to be used again.

Signed-off-by: Marc Zyngier <maz@kernel.org>
---
 arch/arm64/kvm/sys_regs.c | 15 ---------------
 1 file changed, 15 deletions(-)
diff mbox series

Patch

diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
index 4aacce494ee2..6405d9ebc28a 100644
--- a/arch/arm64/kvm/sys_regs.c
+++ b/arch/arm64/kvm/sys_regs.c
@@ -2577,21 +2577,6 @@  static const struct sys_reg_desc sys_reg_descs[] = {
 	EL2_REG(CNTVOFF_EL2, access_rw, reset_val, 0),
 	EL2_REG(CNTHCTL_EL2, access_rw, reset_val, 0),
 
-	EL12_REG(SCTLR, access_vm_reg, reset_val, 0x00C50078),
-	EL12_REG(CPACR, access_rw, reset_val, 0),
-	EL12_REG(TTBR0, access_vm_reg, reset_unknown, 0),
-	EL12_REG(TTBR1, access_vm_reg, reset_unknown, 0),
-	EL12_REG(TCR, access_vm_reg, reset_val, 0),
-	{ SYS_DESC(SYS_SPSR_EL12), access_spsr},
-	{ SYS_DESC(SYS_ELR_EL12), access_elr},
-	EL12_REG(AFSR0, access_vm_reg, reset_unknown, 0),
-	EL12_REG(AFSR1, access_vm_reg, reset_unknown, 0),
-	EL12_REG(ESR, access_vm_reg, reset_unknown, 0),
-	EL12_REG(FAR, access_vm_reg, reset_unknown, 0),
-	EL12_REG(MAIR, access_vm_reg, reset_unknown, 0),
-	EL12_REG(AMAIR, access_vm_reg, reset_amair_el1, 0),
-	EL12_REG(VBAR, access_rw, reset_val, 0),
-	EL12_REG(CONTEXTIDR, access_vm_reg, reset_val, 0),
 	EL12_REG(CNTKCTL, access_rw, reset_val, 0),
 
 	EL2_REG(SP_EL2, NULL, reset_unknown, 0),