AuxXxilium/linux_dsm_epyc7002
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c88b093693
linux_dsm_epyc7002/arch/arm64/kvm
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Dave Martin c88b093693 arm64: KVM: Fix architecturally invalid reset value for FPEXC32_EL2 
Due to what looks like a typo dating back to the original addition
of FPEXC32_EL2 handling, KVM currently initialises this register to
an architecturally invalid value.

As a result, the VECITR field (RES1) in bits [10:8] is initialised
with 0, and the two reserved (RES0) bits [6:5] are initialised with
1.  (In the Common VFP Subarchitecture as specified by ARMv7-A,
these two bits were IMP DEF.  ARMv8-A removes them.)

This patch changes the reset value from 0x70 to 0x700, which
reflects the architectural constraints and is presumably what was
originally intended.

Cc: <stable@vger.kernel.org> # 4.12.x-
Cc: Christoffer Dall <christoffer.dall@arm.com>
Fixes: 62a89c4495 ("arm64: KVM: 32bit handling of coprocessor traps")
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
2019-02-22 09:59:20 +00:00
..
hyp arm/arm64: KVM: Statically configure the host's view of MPIDR 2019-02-19 21:05:35 +00:00
debug.c arm/arm64: KVM: Introduce kvm_call_hyp_ret() 2019-02-19 21:05:24 +00:00
fpsimd.c KVM: arm64: Avoid mistaken attempts to save SVE state for vcpus 2018-06-21 09:14:44 +01:00
guest.c KVM updates for v4.20 2018-10-25 17:57:35 -07:00
handle_exit.c * ARM: selftests improvements, large PUD support for HugeTLB, 2018-12-26 11:46:28 -08:00
hyp-init.S arm64: KVM: Enable Common Not Private translations 2018-09-18 12:03:34 +01:00
hyp.S arm64: KVM: Drop VHE-specific HYP call stub 2019-02-19 21:05:28 +00:00
inject_fault.c arm/arm64: KVM: Add KVM_GET/SET_VCPU_EVENTS 2018-07-21 16:02:30 +01:00
irq.h KVM: arm/arm64: Enable irqchip routing 2016-07-22 18:52:01 +01:00
Kconfig treewide: surround Kconfig file paths with double quotes 2018-12-22 00:25:54 +09:00
Makefile KVM: arm/arm64: Prefix header search paths with $(srctree)/ 2019-02-19 21:05:53 +00:00
regmap.c kvm/arm: use PSR_AA32 definitions 2018-07-05 17:24:15 +01:00
reset.c arm/arm64: KVM: Enable 32 bits kvm vcpu events support 2018-10-18 10:14:03 +01:00
sys_regs_generic_v8.c KVM: arm64: Rewrite system register accessors to read/write functions 2018-03-19 10:53:16 +00:00
sys_regs.c arm64: KVM: Fix architecturally invalid reset value for FPEXC32_EL2 2019-02-22 09:59:20 +00:00
sys_regs.h arm64: KVM: Add trapped system register access tracepoint 2018-12-19 17:47:08 +00:00
trace.h arm64: KVM: Add trapped system register access tracepoint 2018-12-19 17:47:08 +00:00
va_layout.c arm64: KVM: Allow mapping of vectors outside of the RAM region 2018-03-19 13:06:46 +00:00
vgic-sys-reg-v3.c KVM: arm/arm64: Extract GICv3 max APRn index calculation 2017-09-05 17:33:39 +02:00