kernel.git/arch/arm64/kvm, branch linux-4.5.y

kvm: arm64: Fix EC field in inject_abt64

2016-06-01T19:16:57Z

commit e4fe9e7dc3828bf6a5714eb3c55aef6260d823a2 upstream. The EC field of the constructed ESR is conditionally modified by ORing in ESR_ELx_EC_DABT_LOW for a data abort. However, ESR_ELx_EC_SHIFT is missing from this condition. Signed-off-by: Matt Evans Acked-by: Marc Zyngier Signed-off-by: Christoffer Dall Signed-off-by: Greg Kroah-Hartman

arm/arm64: KVM: Fix ioctl error handling

2016-02-29T09:56:40Z

Calling return copy_to_user(...) in an ioctl will not do the right thing if there's a pagefault: copy_to_user returns the number of bytes not copied in this case. Fix up kvm to do return copy_to_user(...)) ? -EFAULT : 0; everywhere. Cc: stable@vger.kernel.org Acked-by: Christoffer Dall Signed-off-by: Michael S. Tsirkin Signed-off-by: Marc Zyngier

arm64: KVM: vgic-v3: Restore ICH_APR0Rn_EL2 before ICH_APR1Rn_EL2

2016-02-24T17:25:58Z

The GICv3 architecture spec says: Writing to the active priority registers in any order other than the following order will result in UNPREDICTABLE behavior: - ICH_AP0R_EL2. - ICH_AP1R_EL2. So let's not pointlessly go against the rule... Acked-by: Christoffer Dall Signed-off-by: Marc Zyngier

arm64: KVM: Configure TCR_EL2.PS at runtime

2016-02-11T13:16:47Z

Setting TCR_EL2.PS to 40 bits is wrong on systems with less that less than 40 bits of physical addresses. and breaks KVM on systems where the RAM is above 40 bits. This patch uses ID_AA64MMFR0_EL1.PARange to set TCR_EL2.PS dynamically, just like we already do for VTCR_EL2.PS. [Marc: rewrote commit message, patch tidy up] Reviewed-by: Marc Zyngier Signed-off-by: Tirumalesh Chalamarla Signed-off-by: Marc Zyngier

arm64: KVM: Fix guest dead loop when register accessor returns false

2016-01-24T21:56:01Z

Currently emulate_cp will return 0 (Handled) no matter what the accessor returns. If register accessor returns false, it will not skip current PC while emulate_cp return handled. Then guest will stuck in a dead loop. Reviewed-by: Marc Zyngier Signed-off-by: Shannon Zhao Signed-off-by: Marc Zyngier

arm64: KVM: Fix comments of the CP handler

2016-01-24T21:56:00Z

Make sure the documentation reflects the actual name of the functions. Acked-by: Marc Zyngier Signed-off-by: Shannon Zhao Signed-off-by: Marc Zyngier

arm64: KVM: Obey RES0/1 reserved bits when setting CPTR_EL2

2016-01-24T21:55:58Z

Some bits in CPTR are defined as RES1 in the architecture. Setting these bits to zero may unintentionally enable future architecture extensions, allowing guests to use them without supervision by the host. This would be bad: for forwards compatibility, this patch makes sure the affected bits are always written with 1, not 0. This patch only addresses CPTR_EL2. Initialisation of other system registers may still need review. Reviewed-by: Marc Zyngier Signed-off-by: Dave Martin Signed-off-by: Marc Zyngier

arm64: KVM: Fix AArch64 guest userspace exception injection

2016-01-24T21:55:57Z

At the moment, our fault injection is pretty limited. We always generate a SYNC exception into EL1, as if the fault was actually from EL1h, no matter how it was generated. This is obviously wrong, as EL0 can generate faults of its own (not to mention the pretty-much unused EL1t mode). This patch fixes it by implementing section D1.10.2 of the ARMv8 ARM, and in particular table D1-7 ("Vector offsets from vector table base address"), which describes which vector to use depending on the source exception level and type (synchronous, IRQ, FIQ or SError). Reviewed-by: Christoffer Dall Tested-by: Shannon Zhao Signed-off-by: Marc Zyngier

arm64: KVM: Add support for 16-bit VMID

2015-12-18T10:15:12Z

The ARMv8.1 architecture extension allows to choose between 8-bit and 16-bit of VMID, so use this capability for KVM. Reviewed-by: Christoffer Dall Signed-off-by: Vladimir Murzin Signed-off-by: Marc Zyngier

arm64: KVM: debug: Remove spurious inline attributes

2015-12-18T10:15:11Z

The debug trapping code is pretty heavy on the "inline" attribute, but most functions are actually referenced in the sysreg tables, making the inlining imposible. Removing the useless inline qualifier seems the right thing to do, having verified that the output code is similar. Cc: Alex Bennée Acked-by: Christoffer Dall Signed-off-by: Marc Zyngier