Re: [PATCH 01/59] KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s

Dave Martin
2019-06-24T11:17:03Z

On Fri, Jun 21, 2019 at 10:37:45AM +0100, Marc Zyngier wrote:
> From: Dave Martin <Dave.Martin@arm.com>
>
> Currently, the {read,write}_sysreg_el*() accessors for accessing
> particular ELs' sysregs in the presence of VHE rely on some local
> hacks and define their system register encodings in a way that is
> inconsistent with the core definitions in <asm/sysreg.h>.
>
> As a result, it is necessary to add duplicate definitions for any
> system register that already needs a definition in sysreg.h for
> other reasons.
>
> This is a bit of a maintenance headache, and the reasons for the
> _el*() accessors working the way they do is a bit historical.
>
> This patch gets rid of the shadow sysreg definitions in
> <asm/kvm_hyp.h>, converts the _el*() accessors to use the core
> __msr_s/__mrs_s interface, and converts all call sites to use the
> standard sysreg #define names (i.e., upper case, with SYS_ prefix).
>
> This patch will conflict heavily anyway, so the opportunity taken
> to clean up some bad whitespace in the context of the changes is
> taken.

FWIW, "opportunity taken ... is taken".

Anway, Ack, thanks to you and Sudeep for keeping this alive.

Cheers
---Dave

> The change exposes a few system registers that have no sysreg.h
> definition, due to msr_s/mrs_s being used in place of msr/mrs:
> additions are made in order to fill in the gaps.
>
> Signed-off-by: Dave Martin <Dave.Martin@arm.com>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Christoffer Dall <christoffer.dall@arm.com>
> Cc: Mark Rutland <mark.rutland@arm.com>
> Cc: Will Deacon <will.deacon@arm.com>
> Link: https://www.spinics.net/lists/kvm-arm/msg31717.html
> [Rebased to v4.21-rc1]
> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
> [Rebased to v5.2-rc5, changelog updates]
> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
> ---
> arch/arm/include/asm/kvm_hyp.h | 13 ++--
> arch/arm64/include/asm/kvm_emulate.h | 16 ++---
> arch/arm64/include/asm/kvm_hyp.h | 50 ++-------------
> arch/arm64/include/asm/sysreg.h | 35 ++++++++++-
> arch/arm64/kvm/hyp/switch.c | 14 ++---
> arch/arm64/kvm/hyp/sysreg-sr.c | 78 ++++++++++++------------
> arch/arm64/kvm/hyp/tlb.c | 12 ++--
> arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c | 2 +-
> arch/arm64/kvm/regmap.c | 4 +-
> arch/arm64/kvm/sys_regs.c | 56 ++++++++---------
> virt/kvm/arm/arch_timer.c | 24 ++++----
> 11 files changed, 148 insertions(+), 156 deletions(-)
>
> diff --git a/arch/arm/include/asm/kvm_hyp.h b/arch/arm/include/asm/kvm_hyp.h
> index 87bcd18df8d5..059224fb14db 100644
> --- a/arch/arm/include/asm/kvm_hyp.h
> +++ b/arch/arm/include/asm/kvm_hyp.h
> @@ -93,13 +93,14 @@
> #define VFP_FPEXC __ACCESS_VFP(FPEXC)
>
> /* AArch64 compatibility macros, only for the timer so far */
> -#define read_sysreg_el0(r) read_sysreg(r##_el0)
> -#define write_sysreg_el0(v, r) write_sysreg(v, r##_el0)
> +#define read_sysreg_el0(r) read_sysreg(r##_EL0)
> +#define write_sysreg_el0(v, r) write_sysreg(v, r##_EL0)
> +
> +#define SYS_CNTP_CTL_EL0 CNTP_CTL
> +#define SYS_CNTP_CVAL_EL0 CNTP_CVAL
> +#define SYS_CNTV_CTL_EL0 CNTV_CTL
> +#define SYS_CNTV_CVAL_EL0 CNTV_CVAL
>
> -#define cntp_ctl_el0 CNTP_CTL
> -#define cntp_cval_el0 CNTP_CVAL
> -#define cntv_ctl_el0 CNTV_CTL
> -#define cntv_cval_el0 CNTV_CVAL
> #define cntvoff_el2 CNTVOFF
> #define cnthctl_el2 CNTHCTL
>
> diff --git a/arch/arm64/include/asm/kvm_emulate.h b/arch/arm64/include/asm/kvm_emulate.h
> index 613427fafff9..39ffe41855bc 100644
> --- a/arch/arm64/include/asm/kvm_emulate.h
> +++ b/arch/arm64/include/asm/kvm_emulate.h
> @@ -137,7 +137,7 @@ static inline unsigned long *__vcpu_elr_el1(const struct kvm_vcpu *vcpu)
> static inline unsigned long vcpu_read_elr_el1(const struct kvm_vcpu *vcpu)
> {
> if (vcpu->arch.sysregs_loaded_on_cpu)
> - return read_sysreg_el1(elr);
> + return read_sysreg_el1(SYS_ELR);
> else
> return *__vcpu_elr_el1(vcpu);
> }
> @@ -145,7 +145,7 @@ static inline unsigned long vcpu_read_elr_el1(const struct kvm_vcpu *vcpu)
> static inline void vcpu_write_elr_el1(const struct kvm_vcpu *vcpu, unsigned long v)
> {
> if (vcpu->arch.sysregs_loaded_on_cpu)
> - write_sysreg_el1(v, elr);
> + write_sysreg_el1(v, SYS_ELR);
> else
> *__vcpu_elr_el1(vcpu) = v;
> }
> @@ -197,7 +197,7 @@ static inline unsigned long vcpu_read_spsr(const struct kvm_vcpu *vcpu)
> return vcpu_read_spsr32(vcpu);
>
> if (vcpu->arch.sysregs_loaded_on_cpu)
> - return read_sysreg_el1(spsr);
> + return read_sysreg_el1(SYS_SPSR);
> else
> return vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1];
> }
> @@ -210,7 +210,7 @@ static inline void vcpu_write_spsr(struct kvm_vcpu *vcpu, unsigned long v)
> }
>
> if (vcpu->arch.sysregs_loaded_on_cpu)
> - write_sysreg_el1(v, spsr);
> + write_sysreg_el1(v, SYS_SPSR);
> else
> vcpu_gp_regs(vcpu)->spsr[KVM_SPSR_EL1] = v;
> }
> @@ -462,13 +462,13 @@ static inline void kvm_skip_instr(struct kvm_vcpu *vcpu, bool is_wide_instr)
> */
> static inline void __hyp_text __kvm_skip_instr(struct kvm_vcpu *vcpu)
> {
> - *vcpu_pc(vcpu) = read_sysreg_el2(elr);
> - vcpu->arch.ctxt.gp_regs.regs.pstate = read_sysreg_el2(spsr);
> + *vcpu_pc(vcpu) = read_sysreg_el2(SYS_ELR);
> + vcpu->arch.ctxt.gp_regs.regs.pstate = read_sysreg_el2(SYS_SPSR);
>
> kvm_skip_instr(vcpu, kvm_vcpu_trap_il_is32bit(vcpu));
>
> - write_sysreg_el2(vcpu->arch.ctxt.gp_regs.regs.pstate, spsr);
> - write_sysreg_el2(*vcpu_pc(vcpu), elr);
> + write_sysreg_el2(vcpu->arch.ctxt.gp_regs.regs.pstate, SYS_SPSR);
> + write_sysreg_el2(*vcpu_pc(vcpu), SYS_ELR);
> }
>
> #endif /* __ARM64_KVM_EMULATE_H__ */
> diff --git a/arch/arm64/include/asm/kvm_hyp.h b/arch/arm64/include/asm/kvm_hyp.h
> index 09fe8bd15f6e..ce99c2daff04 100644
> --- a/arch/arm64/include/asm/kvm_hyp.h
> +++ b/arch/arm64/include/asm/kvm_hyp.h
> @@ -29,7 +29,7 @@
> #define read_sysreg_elx(r,nvh,vh) \
> ({ \
> u64 reg; \
> - asm volatile(ALTERNATIVE("mrs %0, " __stringify(r##nvh),\
> + asm volatile(ALTERNATIVE(__mrs_s("%0", r##nvh), \
> __mrs_s("%0", r##vh), \
> ARM64_HAS_VIRT_HOST_EXTN) \
> : "=r" (reg)); \
> @@ -39,7 +39,7 @@
> #define write_sysreg_elx(v,r,nvh,vh) \
> do { \
> u64 __val = (u64)(v); \
> - asm volatile(ALTERNATIVE("msr " __stringify(r##nvh) ", %x0",\
> + asm volatile(ALTERNATIVE(__msr_s(r##nvh, "%x0"), \
> __msr_s(r##vh, "%x0"), \
> ARM64_HAS_VIRT_HOST_EXTN) \
> : : "rZ" (__val)); \
> @@ -48,55 +48,15 @@
> /*
> * Unified accessors for registers that have a different encoding
> * between VHE and non-VHE. They must be specified without their "ELx"
> - * encoding.
> + * encoding, but with the SYS_ prefix, as defined in asm/sysreg.h.
> */
> -#define read_sysreg_el2(r) \
> - ({ \
> - u64 reg; \
> - asm volatile(ALTERNATIVE("mrs %0, " __stringify(r##_EL2),\
> - "mrs %0, " __stringify(r##_EL1),\
> - ARM64_HAS_VIRT_HOST_EXTN) \
> - : "=r" (reg)); \
> - reg; \
> - })
> -
> -#define write_sysreg_el2(v,r) \
> - do { \
> - u64 __val = (u64)(v); \
> - asm volatile(ALTERNATIVE("msr " __stringify(r##_EL2) ", %x0",\
> - "msr " __stringify(r##_EL1) ", %x0",\
> - ARM64_HAS_VIRT_HOST_EXTN) \
> - : : "rZ" (__val)); \
> - } while (0)
>
> #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)
> #define write_sysreg_el1(v,r) write_sysreg_elx(v, r, _EL1, _EL12)
> -
> -/* The VHE specific system registers and their encoding */
> -#define sctlr_EL12 sys_reg(3, 5, 1, 0, 0)
> -#define cpacr_EL12 sys_reg(3, 5, 1, 0, 2)
> -#define ttbr0_EL12 sys_reg(3, 5, 2, 0, 0)
> -#define ttbr1_EL12 sys_reg(3, 5, 2, 0, 1)
> -#define tcr_EL12 sys_reg(3, 5, 2, 0, 2)
> -#define afsr0_EL12 sys_reg(3, 5, 5, 1, 0)
> -#define afsr1_EL12 sys_reg(3, 5, 5, 1, 1)
> -#define esr_EL12 sys_reg(3, 5, 5, 2, 0)
> -#define far_EL12 sys_reg(3, 5, 6, 0, 0)
> -#define mair_EL12 sys_reg(3, 5, 10, 2, 0)
> -#define amair_EL12 sys_reg(3, 5, 10, 3, 0)
> -#define vbar_EL12 sys_reg(3, 5, 12, 0, 0)
> -#define contextidr_EL12 sys_reg(3, 5, 13, 0, 1)
> -#define cntkctl_EL12 sys_reg(3, 5, 14, 1, 0)
> -#define cntp_tval_EL02 sys_reg(3, 5, 14, 2, 0)
> -#define cntp_ctl_EL02 sys_reg(3, 5, 14, 2, 1)
> -#define cntp_cval_EL02 sys_reg(3, 5, 14, 2, 2)
> -#define cntv_tval_EL02 sys_reg(3, 5, 14, 3, 0)
> -#define cntv_ctl_EL02 sys_reg(3, 5, 14, 3, 1)
> -#define cntv_cval_EL02 sys_reg(3, 5, 14, 3, 2)
> -#define spsr_EL12 sys_reg(3, 5, 4, 0, 0)
> -#define elr_EL12 sys_reg(3, 5, 4, 0, 1)
> +#define read_sysreg_el2(r) read_sysreg_elx(r, _EL2, _EL1)
> +#define write_sysreg_el2(v,r) write_sysreg_elx(v, r, _EL2, _EL1)
>
> /**
> * hyp_alternate_select - Generates patchable code sequences that are
> diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h
> index 902d75b60914..434cf53d527b 100644
> --- a/arch/arm64/include/asm/sysreg.h
> +++ b/arch/arm64/include/asm/sysreg.h
> @@ -202,6 +202,9 @@
> #define SYS_APGAKEYLO_EL1 sys_reg(3, 0, 2, 3, 0)
> #define SYS_APGAKEYHI_EL1 sys_reg(3, 0, 2, 3, 1)
>
> +#define SYS_SPSR_EL1 sys_reg(3, 0, 4, 0, 0)
> +#define SYS_ELR_EL1 sys_reg(3, 0, 4, 0, 1)
> +
> #define SYS_ICC_PMR_EL1 sys_reg(3, 0, 4, 6, 0)
>
> #define SYS_AFSR0_EL1 sys_reg(3, 0, 5, 1, 0)
> @@ -393,6 +396,9 @@
> #define SYS_CNTP_CTL_EL0 sys_reg(3, 3, 14, 2, 1)
> #define SYS_CNTP_CVAL_EL0 sys_reg(3, 3, 14, 2, 2)
>
> +#define SYS_CNTV_CTL_EL0 sys_reg(3, 3, 14, 3, 1)
> +#define SYS_CNTV_CVAL_EL0 sys_reg(3, 3, 14, 3, 2)
> +
> #define SYS_AARCH32_CNTP_TVAL sys_reg(0, 0, 14, 2, 0)
> #define SYS_AARCH32_CNTP_CTL sys_reg(0, 0, 14, 2, 1)
> #define SYS_AARCH32_CNTP_CVAL sys_reg(0, 2, 0, 14, 0)
> @@ -403,14 +409,17 @@
> #define __TYPER_CRm(n) (0xc | (((n) >> 3) & 0x3))
> #define SYS_PMEVTYPERn_EL0(n) sys_reg(3, 3, 14, __TYPER_CRm(n), __PMEV_op2(n))
>
> -#define SYS_PMCCFILTR_EL0 sys_reg (3, 3, 14, 15, 7)
> +#define SYS_PMCCFILTR_EL0 sys_reg(3, 3, 14, 15, 7)
>
> #define SYS_ZCR_EL2 sys_reg(3, 4, 1, 2, 0)
> -
> #define SYS_DACR32_EL2 sys_reg(3, 4, 3, 0, 0)
> +#define SYS_SPSR_EL2 sys_reg(3, 4, 4, 0, 0)
> +#define SYS_ELR_EL2 sys_reg(3, 4, 4, 0, 1)
> #define SYS_IFSR32_EL2 sys_reg(3, 4, 5, 0, 1)
> +#define SYS_ESR_EL2 sys_reg(3, 4, 5, 2, 0)
> #define SYS_VSESR_EL2 sys_reg(3, 4, 5, 2, 3)
> #define SYS_FPEXC32_EL2 sys_reg(3, 4, 5, 3, 0)
> +#define SYS_FAR_EL2 sys_reg(3, 4, 6, 0, 0)
>
> #define SYS_VDISR_EL2 sys_reg(3, 4, 12, 1, 1)
> #define __SYS__AP0Rx_EL2(x) sys_reg(3, 4, 12, 8, x)
> @@ -455,7 +464,29 @@
> #define SYS_ICH_LR15_EL2 __SYS__LR8_EL2(7)
>
> /* VHE encodings for architectural EL0/1 system registers */
> +#define SYS_SCTLR_EL12 sys_reg(3, 5, 1, 0, 0)
> +#define SYS_CPACR_EL12 sys_reg(3, 5, 1, 0, 2)
> #define SYS_ZCR_EL12 sys_reg(3, 5, 1, 2, 0)
> +#define SYS_TTBR0_EL12 sys_reg(3, 5, 2, 0, 0)
> +#define SYS_TTBR1_EL12 sys_reg(3, 5, 2, 0, 1)
> +#define SYS_TCR_EL12 sys_reg(3, 5, 2, 0, 2)
> +#define SYS_SPSR_EL12 sys_reg(3, 5, 4, 0, 0)
> +#define SYS_ELR_EL12 sys_reg(3, 5, 4, 0, 1)
> +#define SYS_AFSR0_EL12 sys_reg(3, 5, 5, 1, 0)
> +#define SYS_AFSR1_EL12 sys_reg(3, 5, 5, 1, 1)
> +#define SYS_ESR_EL12 sys_reg(3, 5, 5, 2, 0)
> +#define SYS_FAR_EL12 sys_reg(3, 5, 6, 0, 0)
> +#define SYS_MAIR_EL12 sys_reg(3, 5, 10, 2, 0)
> +#define SYS_AMAIR_EL12 sys_reg(3, 5, 10, 3, 0)
> +#define SYS_VBAR_EL12 sys_reg(3, 5, 12, 0, 0)
> +#define SYS_CONTEXTIDR_EL12 sys_reg(3, 5, 13, 0, 1)
> +#define SYS_CNTKCTL_EL12 sys_reg(3, 5, 14, 1, 0)
> +#define SYS_CNTP_TVAL_EL02 sys_reg(3, 5, 14, 2, 0)
> +#define SYS_CNTP_CTL_EL02 sys_reg(3, 5, 14, 2, 1)
> +#define SYS_CNTP_CVAL_EL02 sys_reg(3, 5, 14, 2, 2)
> +#define SYS_CNTV_TVAL_EL02 sys_reg(3, 5, 14, 3, 0)
> +#define SYS_CNTV_CTL_EL02 sys_reg(3, 5, 14, 3, 1)
> +#define SYS_CNTV_CVAL_EL02 sys_reg(3, 5, 14, 3, 2)
>
> /* Common SCTLR_ELx flags. */
> #define SCTLR_ELx_DSSBS (_BITUL(44))
> diff --git a/arch/arm64/kvm/hyp/switch.c b/arch/arm64/kvm/hyp/switch.c
> index 8799e0c267d4..7b55c11b30fb 100644
> --- a/arch/arm64/kvm/hyp/switch.c
> +++ b/arch/arm64/kvm/hyp/switch.c
> @@ -295,7 +295,7 @@ static bool __hyp_text __populate_fault_info(struct kvm_vcpu *vcpu)
> if (ec != ESR_ELx_EC_DABT_LOW && ec != ESR_ELx_EC_IABT_LOW)
> return true;
>
> - far = read_sysreg_el2(far);
> + far = read_sysreg_el2(SYS_FAR);
>
> /*
> * The HPFAR can be invalid if the stage 2 fault did not
> @@ -412,7 +412,7 @@ static bool __hyp_text __hyp_handle_fpsimd(struct kvm_vcpu *vcpu)
> static bool __hyp_text fixup_guest_exit(struct kvm_vcpu *vcpu, u64 *exit_code)
> {
> if (ARM_EXCEPTION_CODE(*exit_code) != ARM_EXCEPTION_IRQ)
> - vcpu->arch.fault.esr_el2 = read_sysreg_el2(esr);
> + vcpu->arch.fault.esr_el2 = read_sysreg_el2(SYS_ESR);
>
> /*
> * We're using the raw exception code in order to only process
> @@ -708,8 +708,8 @@ static void __hyp_text __hyp_call_panic_nvhe(u64 spsr, u64 elr, u64 par,
> asm volatile("ldr %0, =__hyp_panic_string" : "=r" (str_va));
>
> __hyp_do_panic(str_va,
> - spsr, elr,
> - read_sysreg(esr_el2), read_sysreg_el2(far),
> + spsr, elr,
> + read_sysreg(esr_el2), read_sysreg_el2(SYS_FAR),
> read_sysreg(hpfar_el2), par, vcpu);
> }
>
> @@ -724,15 +724,15 @@ static void __hyp_call_panic_vhe(u64 spsr, u64 elr, u64 par,
>
> panic(__hyp_panic_string,
> spsr, elr,
> - read_sysreg_el2(esr), read_sysreg_el2(far),
> + read_sysreg_el2(SYS_ESR), read_sysreg_el2(SYS_FAR),
> read_sysreg(hpfar_el2), par, vcpu);
> }
> NOKPROBE_SYMBOL(__hyp_call_panic_vhe);
>
> void __hyp_text __noreturn hyp_panic(struct kvm_cpu_context *host_ctxt)
> {
> - u64 spsr = read_sysreg_el2(spsr);
> - u64 elr = read_sysreg_el2(elr);
> + u64 spsr = read_sysreg_el2(SYS_SPSR);
> + u64 elr = read_sysreg_el2(SYS_ELR);
> u64 par = read_sysreg(par_el1);
>
> if (!has_vhe())
> diff --git a/arch/arm64/kvm/hyp/sysreg-sr.c b/arch/arm64/kvm/hyp/sysreg-sr.c
> index c52a8451637c..62866a68e852 100644
> --- a/arch/arm64/kvm/hyp/sysreg-sr.c
> +++ b/arch/arm64/kvm/hyp/sysreg-sr.c
> @@ -54,33 +54,33 @@ static void __hyp_text __sysreg_save_user_state(struct kvm_cpu_context *ctxt)
> static void __hyp_text __sysreg_save_el1_state(struct kvm_cpu_context *ctxt)
> {
> ctxt->sys_regs[CSSELR_EL1] = read_sysreg(csselr_el1);
> - ctxt->sys_regs[SCTLR_EL1] = read_sysreg_el1(sctlr);
> + ctxt->sys_regs[SCTLR_EL1] = read_sysreg_el1(SYS_SCTLR);
> ctxt->sys_regs[ACTLR_EL1] = read_sysreg(actlr_el1);
> - ctxt->sys_regs[CPACR_EL1] = read_sysreg_el1(cpacr);
> - ctxt->sys_regs[TTBR0_EL1] = read_sysreg_el1(ttbr0);
> - ctxt->sys_regs[TTBR1_EL1] = read_sysreg_el1(ttbr1);
> - ctxt->sys_regs[TCR_EL1] = read_sysreg_el1(tcr);
> - ctxt->sys_regs[ESR_EL1] = read_sysreg_el1(esr);
> - ctxt->sys_regs[AFSR0_EL1] = read_sysreg_el1(afsr0);
> - ctxt->sys_regs[AFSR1_EL1] = read_sysreg_el1(afsr1);
> - ctxt->sys_regs[FAR_EL1] = read_sysreg_el1(far);
> - ctxt->sys_regs[MAIR_EL1] = read_sysreg_el1(mair);
> - ctxt->sys_regs[VBAR_EL1] = read_sysreg_el1(vbar);
> - ctxt->sys_regs[CONTEXTIDR_EL1] = read_sysreg_el1(contextidr);
> - ctxt->sys_regs[AMAIR_EL1] = read_sysreg_el1(amair);
> - ctxt->sys_regs[CNTKCTL_EL1] = read_sysreg_el1(cntkctl);
> + ctxt->sys_regs[CPACR_EL1] = read_sysreg_el1(SYS_CPACR);
> + ctxt->sys_regs[TTBR0_EL1] = read_sysreg_el1(SYS_TTBR0);
> + ctxt->sys_regs[TTBR1_EL1] = read_sysreg_el1(SYS_TTBR1);
> + ctxt->sys_regs[TCR_EL1] = read_sysreg_el1(SYS_TCR);
> + ctxt->sys_regs[ESR_EL1] = read_sysreg_el1(SYS_ESR);
> + ctxt->sys_regs[AFSR0_EL1] = read_sysreg_el1(SYS_AFSR0);
> + ctxt->sys_regs[AFSR1_EL1] = read_sysreg_el1(SYS_AFSR1);
> + ctxt->sys_regs[FAR_EL1] = read_sysreg_el1(SYS_FAR);
> + ctxt->sys_regs[MAIR_EL1] = read_sysreg_el1(SYS_MAIR);
> + ctxt->sys_regs[VBAR_EL1] = read_sysreg_el1(SYS_VBAR);
> + ctxt->sys_regs[CONTEXTIDR_EL1] = read_sysreg_el1(SYS_CONTEXTIDR);
> + ctxt->sys_regs[AMAIR_EL1] = read_sysreg_el1(SYS_AMAIR);
> + ctxt->sys_regs[CNTKCTL_EL1] = read_sysreg_el1(SYS_CNTKCTL);
> ctxt->sys_regs[PAR_EL1] = read_sysreg(par_el1);
> ctxt->sys_regs[TPIDR_EL1] = read_sysreg(tpidr_el1);
>
> ctxt->gp_regs.sp_el1 = read_sysreg(sp_el1);
> - ctxt->gp_regs.elr_el1 = read_sysreg_el1(elr);
> - ctxt->gp_regs.spsr[KVM_SPSR_EL1]= read_sysreg_el1(spsr);
> + ctxt->gp_regs.elr_el1 = read_sysreg_el1(SYS_ELR);
> + ctxt->gp_regs.spsr[KVM_SPSR_EL1]= read_sysreg_el1(SYS_SPSR);
> }
>
> static void __hyp_text __sysreg_save_el2_return_state(struct kvm_cpu_context *ctxt)
> {
> - ctxt->gp_regs.regs.pc = read_sysreg_el2(elr);
> - ctxt->gp_regs.regs.pstate = read_sysreg_el2(spsr);
> + ctxt->gp_regs.regs.pc = read_sysreg_el2(SYS_ELR);
> + ctxt->gp_regs.regs.pstate = read_sysreg_el2(SYS_SPSR);
>
> if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN))
> ctxt->sys_regs[DISR_EL1] = read_sysreg_s(SYS_VDISR_EL2);
> @@ -120,35 +120,35 @@ static void __hyp_text __sysreg_restore_common_state(struct kvm_cpu_context *ctx
>
> static void __hyp_text __sysreg_restore_user_state(struct kvm_cpu_context *ctxt)
> {
> - write_sysreg(ctxt->sys_regs[TPIDR_EL0], tpidr_el0);
> - write_sysreg(ctxt->sys_regs[TPIDRRO_EL0], tpidrro_el0);
> + write_sysreg(ctxt->sys_regs[TPIDR_EL0], tpidr_el0);
> + write_sysreg(ctxt->sys_regs[TPIDRRO_EL0], tpidrro_el0);
> }
>
> static void __hyp_text __sysreg_restore_el1_state(struct kvm_cpu_context *ctxt)
> {
> write_sysreg(ctxt->sys_regs[MPIDR_EL1], vmpidr_el2);
> write_sysreg(ctxt->sys_regs[CSSELR_EL1], csselr_el1);
> - write_sysreg_el1(ctxt->sys_regs[SCTLR_EL1], sctlr);
> - write_sysreg(ctxt->sys_regs[ACTLR_EL1], actlr_el1);
> - write_sysreg_el1(ctxt->sys_regs[CPACR_EL1], cpacr);
> - write_sysreg_el1(ctxt->sys_regs[TTBR0_EL1], ttbr0);
> - write_sysreg_el1(ctxt->sys_regs[TTBR1_EL1], ttbr1);
> - write_sysreg_el1(ctxt->sys_regs[TCR_EL1], tcr);
> - write_sysreg_el1(ctxt->sys_regs[ESR_EL1], esr);
> - write_sysreg_el1(ctxt->sys_regs[AFSR0_EL1], afsr0);
> - write_sysreg_el1(ctxt->sys_regs[AFSR1_EL1], afsr1);
> - write_sysreg_el1(ctxt->sys_regs[FAR_EL1], far);
> - write_sysreg_el1(ctxt->sys_regs[MAIR_EL1], mair);
> - write_sysreg_el1(ctxt->sys_regs[VBAR_EL1], vbar);
> - write_sysreg_el1(ctxt->sys_regs[CONTEXTIDR_EL1],contextidr);
> - write_sysreg_el1(ctxt->sys_regs[AMAIR_EL1], amair);
> - write_sysreg_el1(ctxt->sys_regs[CNTKCTL_EL1], cntkctl);
> + write_sysreg_el1(ctxt->sys_regs[SCTLR_EL1], SYS_SCTLR);
> + write_sysreg(ctxt->sys_regs[ACTLR_EL1], actlr_el1);
> + write_sysreg_el1(ctxt->sys_regs[CPACR_EL1], SYS_CPACR);
> + write_sysreg_el1(ctxt->sys_regs[TTBR0_EL1], SYS_TTBR0);
> + write_sysreg_el1(ctxt->sys_regs[TTBR1_EL1], SYS_TTBR1);
> + write_sysreg_el1(ctxt->sys_regs[TCR_EL1], SYS_TCR);
> + write_sysreg_el1(ctxt->sys_regs[ESR_EL1], SYS_ESR);
> + write_sysreg_el1(ctxt->sys_regs[AFSR0_EL1], SYS_AFSR0);
> + write_sysreg_el1(ctxt->sys_regs[AFSR1_EL1], SYS_AFSR1);
> + write_sysreg_el1(ctxt->sys_regs[FAR_EL1], SYS_FAR);
> + write_sysreg_el1(ctxt->sys_regs[MAIR_EL1], SYS_MAIR);
> + write_sysreg_el1(ctxt->sys_regs[VBAR_EL1], SYS_VBAR);
> + write_sysreg_el1(ctxt->sys_regs[CONTEXTIDR_EL1],SYS_CONTEXTIDR);
> + write_sysreg_el1(ctxt->sys_regs[AMAIR_EL1], SYS_AMAIR);
> + write_sysreg_el1(ctxt->sys_regs[CNTKCTL_EL1], SYS_CNTKCTL);
> write_sysreg(ctxt->sys_regs[PAR_EL1], par_el1);
> write_sysreg(ctxt->sys_regs[TPIDR_EL1], tpidr_el1);
>
> write_sysreg(ctxt->gp_regs.sp_el1, sp_el1);
> - write_sysreg_el1(ctxt->gp_regs.elr_el1, elr);
> - write_sysreg_el1(ctxt->gp_regs.spsr[KVM_SPSR_EL1],spsr);
> + write_sysreg_el1(ctxt->gp_regs.elr_el1, SYS_ELR);
> + write_sysreg_el1(ctxt->gp_regs.spsr[KVM_SPSR_EL1],SYS_SPSR);
> }
>
> static void __hyp_text
> @@ -171,8 +171,8 @@ __sysreg_restore_el2_return_state(struct kvm_cpu_context *ctxt)
> if (!(mode & PSR_MODE32_BIT) && mode >= PSR_MODE_EL2t)
> pstate = PSR_MODE_EL2h | PSR_IL_BIT;
>
> - write_sysreg_el2(ctxt->gp_regs.regs.pc, elr);
> - write_sysreg_el2(pstate, spsr);
> + write_sysreg_el2(ctxt->gp_regs.regs.pc, SYS_ELR);
> + write_sysreg_el2(pstate, SYS_SPSR);
>
> if (cpus_have_const_cap(ARM64_HAS_RAS_EXTN))
> write_sysreg_s(ctxt->sys_regs[DISR_EL1], SYS_VDISR_EL2);
> diff --git a/arch/arm64/kvm/hyp/tlb.c b/arch/arm64/kvm/hyp/tlb.c
> index 76c30866069e..32a782bb00be 100644
> --- a/arch/arm64/kvm/hyp/tlb.c
> +++ b/arch/arm64/kvm/hyp/tlb.c
> @@ -44,12 +44,12 @@ static void __hyp_text __tlb_switch_to_guest_vhe(struct kvm *kvm,
> * in the TCR_EL1 register. We also need to prevent it to
> * allocate IPA->PA walks, so we enable the S1 MMU...
> */
> - val = cxt->tcr = read_sysreg_el1(tcr);
> + val = cxt->tcr = read_sysreg_el1(SYS_TCR);
> val |= TCR_EPD1_MASK | TCR_EPD0_MASK;
> - write_sysreg_el1(val, tcr);
> - val = cxt->sctlr = read_sysreg_el1(sctlr);
> + write_sysreg_el1(val, SYS_TCR);
> + val = cxt->sctlr = read_sysreg_el1(SYS_SCTLR);
> val |= SCTLR_ELx_M;
> - write_sysreg_el1(val, sctlr);
> + write_sysreg_el1(val, SYS_SCTLR);
> }
>
> /*
> @@ -96,8 +96,8 @@ static void __hyp_text __tlb_switch_to_host_vhe(struct kvm *kvm,
>
> if (cpus_have_const_cap(ARM64_WORKAROUND_1165522)) {
> /* Restore the registers to what they were */
> - write_sysreg_el1(cxt->tcr, tcr);
> - write_sysreg_el1(cxt->sctlr, sctlr);
> + write_sysreg_el1(cxt->tcr, SYS_TCR);
> + write_sysreg_el1(cxt->sctlr, SYS_SCTLR);
> }
>
> local_irq_restore(cxt->flags);
> diff --git a/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c b/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c
> index 9cbdd034a563..4cd32c856110 100644
> --- a/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c
> +++ b/arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c
> @@ -27,7 +27,7 @@
> static bool __hyp_text __is_be(struct kvm_vcpu *vcpu)
> {
> if (vcpu_mode_is_32bit(vcpu))
> - return !!(read_sysreg_el2(spsr) & PSR_AA32_E_BIT);
> + return !!(read_sysreg_el2(SYS_SPSR) & PSR_AA32_E_BIT);
>
> return !!(read_sysreg(SCTLR_EL1) & SCTLR_ELx_EE);
> }
> diff --git a/arch/arm64/kvm/regmap.c b/arch/arm64/kvm/regmap.c
> index 7a5173ea2276..5dd110b384e4 100644
> --- a/arch/arm64/kvm/regmap.c
> +++ b/arch/arm64/kvm/regmap.c
> @@ -163,7 +163,7 @@ unsigned long vcpu_read_spsr32(const struct kvm_vcpu *vcpu)
>
> switch (spsr_idx) {
> case KVM_SPSR_SVC:
> - return read_sysreg_el1(spsr);
> + return read_sysreg_el1(SYS_SPSR);
> case KVM_SPSR_ABT:
> return read_sysreg(spsr_abt);
> case KVM_SPSR_UND:
> @@ -188,7 +188,7 @@ void vcpu_write_spsr32(struct kvm_vcpu *vcpu, unsigned long v)
>
> switch (spsr_idx) {
> case KVM_SPSR_SVC:
> - write_sysreg_el1(v, spsr);
> + write_sysreg_el1(v, SYS_SPSR);
> case KVM_SPSR_ABT:
> write_sysreg(v, spsr_abt);
> case KVM_SPSR_UND:
> diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c
> index 857b226bcdde..adb8a7e9c8e4 100644
> --- a/arch/arm64/kvm/sys_regs.c
> +++ b/arch/arm64/kvm/sys_regs.c
> @@ -92,24 +92,24 @@ u64 vcpu_read_sys_reg(const struct kvm_vcpu *vcpu, int reg)
> */
> switch (reg) {
> case CSSELR_EL1: return read_sysreg_s(SYS_CSSELR_EL1);
> - case SCTLR_EL1: return read_sysreg_s(sctlr_EL12);
> + case SCTLR_EL1: return read_sysreg_s(SYS_SCTLR_EL12);
> case ACTLR_EL1: return read_sysreg_s(SYS_ACTLR_EL1);
> - case CPACR_EL1: return read_sysreg_s(cpacr_EL12);
> - case TTBR0_EL1: return read_sysreg_s(ttbr0_EL12);
> - case TTBR1_EL1: return read_sysreg_s(ttbr1_EL12);
> - case TCR_EL1: return read_sysreg_s(tcr_EL12);
> - case ESR_EL1: return read_sysreg_s(esr_EL12);
> - case AFSR0_EL1: return read_sysreg_s(afsr0_EL12);
> - case AFSR1_EL1: return read_sysreg_s(afsr1_EL12);
> - case FAR_EL1: return read_sysreg_s(far_EL12);
> - case MAIR_EL1: return read_sysreg_s(mair_EL12);
> - case VBAR_EL1: return read_sysreg_s(vbar_EL12);
> - case CONTEXTIDR_EL1: return read_sysreg_s(contextidr_EL12);
> + case CPACR_EL1: return read_sysreg_s(SYS_CPACR_EL12);
> + case TTBR0_EL1: return read_sysreg_s(SYS_TTBR0_EL12);
> + case TTBR1_EL1: return read_sysreg_s(SYS_TTBR1_EL12);
> + case TCR_EL1: return read_sysreg_s(SYS_TCR_EL12);
> + case ESR_EL1: return read_sysreg_s(SYS_ESR_EL12);
> + case AFSR0_EL1: return read_sysreg_s(SYS_AFSR0_EL12);
> + case AFSR1_EL1: return read_sysreg_s(SYS_AFSR1_EL12);
> + case FAR_EL1: return read_sysreg_s(SYS_FAR_EL12);
> + case MAIR_EL1: return read_sysreg_s(SYS_MAIR_EL12);
> + case VBAR_EL1: return read_sysreg_s(SYS_VBAR_EL12);
> + case CONTEXTIDR_EL1: return read_sysreg_s(SYS_CONTEXTIDR_EL12);
> case TPIDR_EL0: return read_sysreg_s(SYS_TPIDR_EL0);
> case TPIDRRO_EL0: return read_sysreg_s(SYS_TPIDRRO_EL0);
> case TPIDR_EL1: return read_sysreg_s(SYS_TPIDR_EL1);
> - case AMAIR_EL1: return read_sysreg_s(amair_EL12);
> - case CNTKCTL_EL1: return read_sysreg_s(cntkctl_EL12);
> + case AMAIR_EL1: return read_sysreg_s(SYS_AMAIR_EL12);
> + case CNTKCTL_EL1: return read_sysreg_s(SYS_CNTKCTL_EL12);
> case PAR_EL1: return read_sysreg_s(SYS_PAR_EL1);
> case DACR32_EL2: return read_sysreg_s(SYS_DACR32_EL2);
> case IFSR32_EL2: return read_sysreg_s(SYS_IFSR32_EL2);
> @@ -135,24 +135,24 @@ void vcpu_write_sys_reg(struct kvm_vcpu *vcpu, u64 val, int reg)
> */
> switch (reg) {
> case CSSELR_EL1: write_sysreg_s(val, SYS_CSSELR_EL1); return;
> - case SCTLR_EL1: write_sysreg_s(val, sctlr_EL12); return;
> + case SCTLR_EL1: write_sysreg_s(val, SYS_SCTLR_EL12); return;
> case ACTLR_EL1: write_sysreg_s(val, SYS_ACTLR_EL1); return;
> - case CPACR_EL1: write_sysreg_s(val, cpacr_EL12); return;
> - case TTBR0_EL1: write_sysreg_s(val, ttbr0_EL12); return;
> - case TTBR1_EL1: write_sysreg_s(val, ttbr1_EL12); return;
> - case TCR_EL1: write_sysreg_s(val, tcr_EL12); return;
> - case ESR_EL1: write_sysreg_s(val, esr_EL12); return;
> - case AFSR0_EL1: write_sysreg_s(val, afsr0_EL12); return;
> - case AFSR1_EL1: write_sysreg_s(val, afsr1_EL12); return;
> - case FAR_EL1: write_sysreg_s(val, far_EL12); return;
> - case MAIR_EL1: write_sysreg_s(val, mair_EL12); return;
> - case VBAR_EL1: write_sysreg_s(val, vbar_EL12); return;
> - case CONTEXTIDR_EL1: write_sysreg_s(val, contextidr_EL12); return;
> + case CPACR_EL1: write_sysreg_s(val, SYS_CPACR_EL12); return;
> + case TTBR0_EL1: write_sysreg_s(val, SYS_TTBR0_EL12); return;
> + case TTBR1_EL1: write_sysreg_s(val, SYS_TTBR1_EL12); return;
> + case TCR_EL1: write_sysreg_s(val, SYS_TCR_EL12); return;
> + case ESR_EL1: write_sysreg_s(val, SYS_ESR_EL12); return;
> + case AFSR0_EL1: write_sysreg_s(val, SYS_AFSR0_EL12); return;
> + case AFSR1_EL1: write_sysreg_s(val, SYS_AFSR1_EL12); return;
> + case FAR_EL1: write_sysreg_s(val, SYS_FAR_EL12); return;
> + case MAIR_EL1: write_sysreg_s(val, SYS_MAIR_EL12); return;
> + case VBAR_EL1: write_sysreg_s(val, SYS_VBAR_EL12); return;
> + case CONTEXTIDR_EL1: write_sysreg_s(val, SYS_CONTEXTIDR_EL12); return;
> case TPIDR_EL0: write_sysreg_s(val, SYS_TPIDR_EL0); return;
> case TPIDRRO_EL0: write_sysreg_s(val, SYS_TPIDRRO_EL0); return;
> case TPIDR_EL1: write_sysreg_s(val, SYS_TPIDR_EL1); return;
> - case AMAIR_EL1: write_sysreg_s(val, amair_EL12); return;
> - case CNTKCTL_EL1: write_sysreg_s(val, cntkctl_EL12); return;
> + case AMAIR_EL1: write_sysreg_s(val, SYS_AMAIR_EL12); return;
> + case CNTKCTL_EL1: write_sysreg_s(val, SYS_CNTKCTL_EL12); return;
> case PAR_EL1: write_sysreg_s(val, SYS_PAR_EL1); return;
> case DACR32_EL2: write_sysreg_s(val, SYS_DACR32_EL2); return;
> case IFSR32_EL2: write_sysreg_s(val, SYS_IFSR32_EL2); return;
> diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
> index 05ddb6293b79..089441a07ed7 100644
> --- a/virt/kvm/arm/arch_timer.c
> +++ b/virt/kvm/arm/arch_timer.c
> @@ -237,10 +237,10 @@ static bool kvm_timer_should_fire(struct arch_timer_context *timer_ctx)
>
> switch (index) {
> case TIMER_VTIMER:
> - cnt_ctl = read_sysreg_el0(cntv_ctl);
> + cnt_ctl = read_sysreg_el0(SYS_CNTV_CTL);
> break;
> case TIMER_PTIMER:
> - cnt_ctl = read_sysreg_el0(cntp_ctl);
> + cnt_ctl = read_sysreg_el0(SYS_CNTP_CTL);
> break;
> case NR_KVM_TIMERS:
> /* GCC is braindead */
> @@ -349,20 +349,20 @@ static void timer_save_state(struct arch_timer_context *ctx)
>
> switch (index) {
> case TIMER_VTIMER:
> - ctx->cnt_ctl = read_sysreg_el0(cntv_ctl);
> - ctx->cnt_cval = read_sysreg_el0(cntv_cval);
> + ctx->cnt_ctl = read_sysreg_el0(SYS_CNTV_CTL);
> + ctx->cnt_cval = read_sysreg_el0(SYS_CNTV_CVAL);
>
> /* Disable the timer */
> - write_sysreg_el0(0, cntv_ctl);
> + write_sysreg_el0(0, SYS_CNTV_CTL);
> isb();
>
> break;
> case TIMER_PTIMER:
> - ctx->cnt_ctl = read_sysreg_el0(cntp_ctl);
> - ctx->cnt_cval = read_sysreg_el0(cntp_cval);
> + ctx->cnt_ctl = read_sysreg_el0(SYS_CNTP_CTL);
> + ctx->cnt_cval = read_sysreg_el0(SYS_CNTP_CVAL);
>
> /* Disable the timer */
> - write_sysreg_el0(0, cntp_ctl);
> + write_sysreg_el0(0, SYS_CNTP_CTL);
> isb();
>
> break;
> @@ -428,14 +428,14 @@ static void timer_restore_state(struct arch_timer_context *ctx)
>
> switch (index) {
> case TIMER_VTIMER:
> - write_sysreg_el0(ctx->cnt_cval, cntv_cval);
> + write_sysreg_el0(ctx->cnt_cval, SYS_CNTV_CVAL);
> isb();
> - write_sysreg_el0(ctx->cnt_ctl, cntv_ctl);
> + write_sysreg_el0(ctx->cnt_ctl, SYS_CNTV_CTL);
> break;
> case TIMER_PTIMER:
> - write_sysreg_el0(ctx->cnt_cval, cntp_cval);
> + write_sysreg_el0(ctx->cnt_cval, SYS_CNTP_CVAL);
> isb();
> - write_sysreg_el0(ctx->cnt_ctl, cntp_ctl);
> + write_sysreg_el0(ctx->cnt_ctl, SYS_CNTP_CTL);
> break;
> case NR_KVM_TIMERS:
> BUG();
> --
> 2.20.1
>
>
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