From: Marc Zyngier <maz@kernel.org>
To: kvmarm@lists.linux.dev, kvm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org
Cc: Alexandru Elisei <alexandru.elisei@arm.com>,
Andre Przywara <andre.przywara@arm.com>,
Chase Conklin <chase.conklin@arm.com>,
Christoffer Dall <christoffer.dall@arm.com>,
Ganapatrao Kulkarni <gankulkarni@os.amperecomputing.com>,
Darren Hart <darren@os.amperecomputing.com>,
Jintack Lim <jintack@cs.columbia.edu>,
Russell King <rmk+kernel@armlinux.org.uk>,
Miguel Luis <miguel.luis@oracle.com>,
James Morse <james.morse@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oliver.upton@linux.dev>,
Zenghui Yu <yuzenghui@huawei.com>
Subject: [PATCH v11 04/43] KVM: arm64: nv: Drop EL12 register traps that are redirected to VNCR
Date: Mon, 20 Nov 2023 13:09:48 +0000 [thread overview]
Message-ID: <20231120131027.854038-5-maz@kernel.org> (raw)
In-Reply-To: <20231120131027.854038-1-maz@kernel.org>
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 --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),
--
2.39.2
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next prev parent reply other threads:[~2023-11-20 13:11 UTC|newest]
Thread overview: 79+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-20 13:09 [PATCH v11 00/43] KVM: arm64: Nested Virtualization support (FEAT_NV2 only) Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 01/43] arm64: cpufeatures: Restrict NV support to FEAT_NV2 Marc Zyngier
2023-11-21 9:07 ` Ganapatrao Kulkarni
2023-11-21 9:27 ` Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 02/43] KVM: arm64: nv: Hoist vcpu_has_nv() into is_hyp_ctxt() Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 03/43] KVM: arm64: nv: Compute NV view of idregs as a one-off Marc Zyngier
2023-11-20 13:09 ` Marc Zyngier [this message]
2023-11-20 13:09 ` [PATCH v11 05/43] KVM: arm64: nv: Add non-VHE-EL2->EL1 translation helpers Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 06/43] KVM: arm64: nv: Add include containing the VNCR_EL2 offsets Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 07/43] KVM: arm64: Introduce a bad_trap() primitive for unexpected trap handling Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 08/43] KVM: arm64: nv: Add EL2_REG_VNCR()/EL2_REG_REDIR() sysreg helpers Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 09/43] KVM: arm64: nv: Map VNCR-capable registers to a separate page Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 10/43] KVM: arm64: nv: Handle virtual EL2 registers in vcpu_read/write_sys_reg() Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 11/43] KVM: arm64: nv: Handle HCR_EL2.E2H specially Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 12/43] KVM: arm64: nv: Handle CNTHCTL_EL2 specially Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 13/43] KVM: arm64: nv: Save/Restore vEL2 sysregs Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 14/43] KVM: arm64: nv: Respect virtual HCR_EL2.TWX setting Marc Zyngier
2023-11-20 13:09 ` [PATCH v11 15/43] KVM: arm64: nv: Respect virtual CPTR_EL2.{TFP,FPEN} settings Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 16/43] KVM: arm64: nv: Configure HCR_EL2 for FEAT_NV2 Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 17/43] KVM: arm64: nv: Support multiple nested Stage-2 mmu structures Marc Zyngier
2024-01-23 9:55 ` Ganapatrao Kulkarni
2024-01-23 14:26 ` Marc Zyngier
2024-01-25 8:14 ` Ganapatrao Kulkarni
2024-01-25 8:58 ` Marc Zyngier
2024-01-31 9:39 ` Ganapatrao Kulkarni
2024-01-31 13:50 ` Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 18/43] KVM: arm64: nv: Implement nested Stage-2 page table walk logic Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 19/43] KVM: arm64: nv: Handle shadow stage 2 page faults Marc Zyngier
2024-01-17 14:53 ` Joey Gouly
2024-01-17 15:53 ` Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 20/43] KVM: arm64: nv: Restrict S2 RD/WR permissions to match the guest's Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 21/43] KVM: arm64: nv: Unmap/flush shadow stage 2 page tables Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 22/43] KVM: arm64: nv: Set a handler for the system instruction traps Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 23/43] KVM: arm64: nv: Trap and emulate AT instructions from virtual EL2 Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 24/43] KVM: arm64: nv: Trap and emulate TLBI " Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 25/43] KVM: arm64: nv: Hide RAS from nested guests Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 26/43] KVM: arm64: nv: Add handling of EL2-specific timer registers Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 27/43] KVM: arm64: nv: Sync nested timer state with FEAT_NV2 Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 28/43] KVM: arm64: nv: Publish emulated timer interrupt state in the in-memory state Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 29/43] KVM: arm64: nv: Load timer before the GIC Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 30/43] KVM: arm64: nv: Nested GICv3 Support Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 31/43] KVM: arm64: nv: Don't block in WFI from nested state Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 32/43] KVM: arm64: nv: vgic: Allow userland to set VGIC maintenance IRQ Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 33/43] KVM: arm64: nv: Fold GICv3 host trapping requirements into guest setup Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 34/43] KVM: arm64: nv: Deal with broken VGIC on maintenance interrupt delivery Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 35/43] KVM: arm64: nv: Add handling of FEAT_TTL TLB invalidation Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 36/43] KVM: arm64: nv: Invalidate TLBs based on shadow S2 TTL-like information Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 37/43] KVM: arm64: nv: Tag shadow S2 entries with nested level Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 38/43] KVM: arm64: nv: Allocate VNCR page when required Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 39/43] KVM: arm64: nv: Fast-track 'InHost' exception returns Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 40/43] KVM: arm64: nv: Fast-track EL1 TLBIs for VHE guests Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 41/43] KVM: arm64: nv: Use FEAT_ECV to trap access to EL0 timers Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 42/43] KVM: arm64: nv: Accelerate EL0 timer read accesses when FEAT_ECV is on Marc Zyngier
2023-11-20 13:10 ` [PATCH v11 43/43] KVM: arm64: nv: Allow userspace to request KVM_ARM_VCPU_NESTED_VIRT Marc Zyngier
2023-11-21 8:51 ` [PATCH v11 00/43] KVM: arm64: Nested Virtualization support (FEAT_NV2 only) Ganapatrao Kulkarni
2023-11-21 9:08 ` Marc Zyngier
2023-11-21 9:26 ` Ganapatrao Kulkarni
2023-11-21 9:41 ` Marc Zyngier
2023-11-22 11:10 ` Ganapatrao Kulkarni
2023-11-22 11:39 ` Marc Zyngier
2023-11-21 16:49 ` Miguel Luis
2023-11-21 19:02 ` Marc Zyngier
2023-11-23 16:21 ` Miguel Luis
2023-11-23 16:44 ` Marc Zyngier
2023-11-24 9:50 ` Ganapatrao Kulkarni
2023-11-24 10:19 ` Marc Zyngier
2023-11-24 12:34 ` Ganapatrao Kulkarni
2023-11-24 12:51 ` Marc Zyngier
2023-11-24 13:22 ` Ganapatrao Kulkarni
2023-11-24 14:32 ` Marc Zyngier
2023-11-27 7:26 ` Ganapatrao Kulkarni
2023-11-27 9:22 ` Marc Zyngier
2023-11-27 10:59 ` Ganapatrao Kulkarni
2023-11-27 11:45 ` Marc Zyngier
2023-11-27 12:18 ` Ganapatrao Kulkarni
2023-11-27 13:57 ` Marc Zyngier
2023-12-18 12:39 ` Marc Zyngier
2023-12-18 19:51 ` Oliver Upton
2023-12-19 10:32 ` (subset) " Marc Zyngier
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