Commit Graph

8 Commits

Author SHA1 Message Date
Sascha Bischoff
9d6d9514c0 KVM: arm64: gic-v5: Support GICv5 FGTs & FGUs
Extend the existing FGT/FGU infrastructure to include the GICv5 trap
registers (ICH_HFGRTR_EL2, ICH_HFGWTR_EL2, ICH_HFGITR_EL2). This
involves mapping the trap registers and their bits to the
corresponding feature that introduces them (FEAT_GCIE for all, in this
case), and mapping each trap bit to the system register/instruction
controlled by it.

As of this change, none of the GICv5 instructions or register accesses
are being trapped.

Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Reviewed-by: Jonathan Cameron <jonathan.cameron@huawei.com>
Link: https://patch.msgid.link/20260319154937.3619520-14-sascha.bischoff@arm.com
Signed-off-by: Marc Zyngier <maz@kernel.org>
2026-03-19 18:21:27 +00:00
James Clark
557c82a448 KVM: arm64: Add trap configs for PMSDSFR_EL1
SPE data source filtering (SPE_FEAT_FDS) adds a new register
PMSDSFR_EL1, add the trap configs for it. PMSNEVFR_EL1 was also missing
its VNCR offset so add it along with PMSDSFR_EL1.

Tested-by: Leo Yan <leo.yan@arm.com>
Signed-off-by: James Clark <james.clark@linaro.org>
Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-09-19 14:30:49 +01:00
Oliver Upton
81fbef1647 KVM: arm64: Wire up SCTLR2_ELx sysreg descriptors
Set up the sysreg descriptors for SCTLR2_ELx, along with the associated
storage and VNCR mapping.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250708172532.1699409-12-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-07-08 11:36:35 -07:00
Oliver Upton
211fced460 KVM: arm64: nv: Add FEAT_RAS vSError sys regs to table
Prepare to implement RAS for NV by adding the missing EL2 sysregs for
the vSError context.

Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20250708172532.1699409-8-oliver.upton@linux.dev
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2025-07-08 11:36:34 -07:00
Marc Zyngier
df56f1ccb0 KVM: arm64: Add FEAT_FGT2 registers to the VNCR page
The FEAT_FGT2 registers are part of the VNCR page. Describe the
corresponding offsets and add them to the vcpu sysreg enumeration.

Signed-off-by: Marc Zyngier <maz@kernel.org>
2025-05-19 11:35:30 +01:00
Marc Zyngier
5792349d0c arm64: Remove VNCR definition for PIRE0_EL2
As of the ARM ARM Known Issues document 102105_K.a_04_en, D22677
fixes a problem with the PIRE0_EL2 register, resulting in its
removal from the VNCR page (it had no purpose being there the
first place).

Follow the architecture update by removing this offset.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20241023145345.1613824-3-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
2024-10-31 02:42:29 +00:00
Joey Gouly
b86c9bea63 KVM: arm64: Save/restore POE registers
Define the new system registers that POE introduces and context switch them.

Signed-off-by: Joey Gouly <joey.gouly@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Cc: Oliver Upton <oliver.upton@linux.dev>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will@kernel.org>
Reviewed-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240822151113.1479789-8-joey.gouly@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
2024-09-04 12:52:39 +01:00
Marc Zyngier
60ce16cc12 KVM: arm64: nv: Add include containing the VNCR_EL2 offsets
VNCR_EL2 points to a page containing a number of system registers
accessed by a guest hypervisor when ARMv8.4-NV is enabled.

Let's document the offsets in that page, as we are going to use
this layout.

Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Marc Zyngier <maz@kernel.org>
2023-12-19 09:51:18 +00:00