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KVM: arm64: Migrate _elx sysreg accessors to msr_s/mrs_s 

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
to clean up some bad whitespace in the context of the changes is
taken.

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>
This commit is contained in:
Dave Martin 2019-04-06 11:29:40 +01:00 committed by Marc Zyngier
parent 49caebe9b3
commit fdec2a9ef8
11 changed files with 148 additions and 156 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

13
arch/arm/include/asm/kvm_hyp.h
View File

@ -82,13 +82,14 @@
#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

16
arch/arm64/include/asm/kvm_emulate.h
View File

@ -126,7 +126,7 @@ 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);
}
@ -134,7 +134,7 @@ 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;
}
@ -186,7 +186,7 @@ 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];
}
@ -199,7 +199,7 @@ 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;
}
@ -465,13 +465,13 @@ 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__ */

50
arch/arm64/include/asm/kvm_hyp.h
View File

@ -18,7 +18,7 @@
#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)); \
@ -28,7 +28,7 @@
#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)); \
@ -37,55 +37,15 @@
/*
* 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

35
arch/arm64/include/asm/sysreg.h
View File

@ -191,6 +191,9 @@
#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)
@ -382,6 +385,9 @@
#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)
@ -392,14 +398,17 @@
#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)
@ -444,7 +453,29 @@
#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))

14
arch/arm64/kvm/hyp/switch.c
View File

@ -284,7 +284,7 @@ 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
@ -401,7 +401,7 @@ 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
@ -697,8 +697,8 @@ 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);
}
@ -713,15 +713,15 @@ 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())

78
arch/arm64/kvm/hyp/sysreg-sr.c
View File

@ -43,33 +43,33 @@ 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);
@ -109,35 +109,35 @@ 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
@ -160,8 +160,8 @@ __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);

12
arch/arm64/kvm/hyp/tlb.c
View File

@ -33,12 +33,12 @@ 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);
}
/*
@ -85,8 +85,8 @@ 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);

2
arch/arm64/kvm/hyp/vgic-v2-cpuif-proxy.c
View File

@ -16,7 +16,7 @@
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);
}

4
arch/arm64/kvm/regmap.c
View File

@ -152,7 +152,7 @@ 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:
@ -177,7 +177,7 @@ 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:

56
arch/arm64/kvm/sys_regs.c
View File

@ -81,24 +81,24 @@ 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);
@ -124,24 +124,24 @@ 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;

24
virt/kvm/arm/arch_timer.c
View File

@ -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 */
@ -350,20 +350,20 @@ 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;
@ -429,14 +429,14 @@ 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();