linux

iv/linux

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James Morse 8c2d146ee7 KVM: arm64: Define our own swab32() to avoid a uapi static inline

KVM uses swab32() when mediating GIC MMIO accesses if the GICV is badly
aligned, and the host and guest differ in endianness.

arm64 doesn't provide a __arch_swab32(), so __fswab32() is always backed
by the macro implementation that the compiler reduces to a single
instruction. But the static-inline causes problems for KVM if the compiler
chooses not to inline this function, it may not be located in the
__hyp_text where __vgic_v2_perform_cpuif_access() needs it.

Create our own __kvm_swab32() macro that calls ___constant_swab32()
directly. This way we know it will always be inlined.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20200220165839.256881-3-james.morse@arm.com

2020-02-22 11:01:47 +00:00

boot

arm64: dts: ls1028a: fix reboot node

2019-12-12 09:59:38 +08:00

configs

arm64: defconfig: re-run savedefconfig

2019-12-05 13:20:17 -08:00

crypto

crypto: arch - conditionalize crypto api in arch glue for lib code

2019-11-27 13:08:49 +08:00

include

KVM: arm64: Define our own swab32() to avoid a uapi static inline