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KVM: arm64: Remove alternatives from sysreg accessors in VHE hypervisor context

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In the VHE hypervisor code, we should be using the remapped VHE
accessors, no ifs, no buts. No need to generate any alternative.

Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20230609162200.2024064-9-maz@kernel.org
Signed-off-by: Oliver Upton <oliver.upton@linux.dev>
This commit is contained in:
Marc Zyngier 2023-06-09 17:21:51 +01:00 committed by Oliver Upton
parent 659803aef4
commit 57e784b407
1 changed files with 19 additions and 6 deletions
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25
arch/arm64/include/asm/kvm_hyp.h
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@ -16,6 +16,23 @@ DECLARE_PER_CPU(struct kvm_cpu_context, kvm_hyp_ctxt);
DECLARE_PER_CPU(unsigned long, kvm_hyp_vector);
DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params);
/*
* Unified accessors for registers that have a different encoding
* between VHE and non-VHE. They must be specified without their "ELx"
* encoding, but with the SYS_ prefix, as defined in asm/sysreg.h.
*/
#if defined(__KVM_VHE_HYPERVISOR__)
#define read_sysreg_el0(r) read_sysreg_s(r##_EL02)
#define write_sysreg_el0(v,r) write_sysreg_s(v, r##_EL02)
#define read_sysreg_el1(r) read_sysreg_s(r##_EL12)
#define write_sysreg_el1(v,r) write_sysreg_s(v, r##_EL12)
#define read_sysreg_el2(r) read_sysreg_s(r##_EL1)
#define write_sysreg_el2(v,r) write_sysreg_s(v, r##_EL1)
#else // !__KVM_VHE_HYPERVISOR__
#define read_sysreg_elx(r,nvh,vh) \
({ \
u64 reg; \
@ -35,12 +52,6 @@ DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params);
: : "rZ" (__val)); \
} while (0)
/*
* Unified accessors for registers that have a different encoding
* between VHE and non-VHE. They must be specified without their "ELx"
* encoding, but with the SYS_ prefix, as defined in asm/sysreg.h.
*/
#define read_sysreg_el0(r) read_sysreg_elx(r, _EL0, _EL02)
#define write_sysreg_el0(v,r) write_sysreg_elx(v, r, _EL0, _EL02)
#define read_sysreg_el1(r) read_sysreg_elx(r, _EL1, _EL12)
@ -48,6 +59,8 @@ DECLARE_PER_CPU(struct kvm_nvhe_init_params, kvm_init_params);
#define read_sysreg_el2(r) read_sysreg_elx(r, _EL2, _EL1)
#define write_sysreg_el2(v,r) write_sysreg_elx(v, r, _EL2, _EL1)
#endif // __KVM_VHE_HYPERVISOR__
/*
* Without an __arch_swab32(), we fall back to ___constant_swab32(), but the
* static inline can allow the compiler to out-of-line this. KVM always wants