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| author |   Dave Martin <Dave.Martin@arm.com> | 2019-04-06 11:29:40 +0100 |
|---|---|---|
| committer |   Marc Zyngier <marc.zyngier@arm.com> | 2019-07-05 13:57:25 +0100 |
| commit | fdec2a9ef853172529baaa192673b4cdb9a44fac (patch) | |
| tree | 54fd76a27f05b7de5ae0d6835e065979a49e7558 /arch/arm/include/asm/kvm_hyp.h | |
| parent | KVM: doc: Add API documentation on the KVM_REG_ARM_WORKAROUNDS register (diff) | |
| download | linux-dev-fdec2a9ef853172529baaa192673b4cdb9a44fac.tar.xz linux-dev-fdec2a9ef853172529baaa192673b4cdb9a44fac.zip | |
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>
Diffstat (limited to 'arch/arm/include/asm/kvm_hyp.h')
| -rw-r--r-- | arch/arm/include/asm/kvm_hyp.h | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/arch/arm/include/asm/kvm_hyp.h b/arch/arm/include/asm/kvm_hyp.h index 71ac1c8d101c..40e9034db601 100644 --- a/arch/arm/include/asm/kvm_hyp.h +++ b/arch/arm/include/asm/kvm_hyp.h @@ -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 |