linux-kernel - Re: [RFC PATCH 6/8] tools: Import the firmware registers

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Message-ID: <CAJHc60yGpDR3denxfTUs_TxKcNWaPLChkVEgEXpNkGvkRS=KEg@mail.gmail.com>
Date:   Thu, 4 Nov 2021 11:58:16 -0700
From:   Raghavendra Rao Ananta <rananta@...gle.com>
To:     Oliver Upton <oupton@...gle.com>
Cc:     Marc Zyngier <maz@...nel.org>, Andrew Jones <drjones@...hat.com>,
        James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, Peter Shier <pshier@...gle.com>,
        Ricardo Koller <ricarkol@...gle.com>,
        Reiji Watanabe <reijiw@...gle.com>,
        Jing Zhang <jingzhangos@...gle.com>,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.cs.columbia.edu,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [RFC PATCH 6/8] tools: Import the firmware registers

On Wed, Nov 3, 2021 at 5:23 PM Oliver Upton <oupton@...gle.com> wrote:
>
> On Tue, Nov 02, 2021 at 12:22:01AM +0000, Raghavendra Rao Ananta wrote:
> > Import the firmware definitions for the firmware registers,
> > KVM_REG_ARM_STD, KVM_REG_ARM_STD_HYP, and KVM_REG_ARM_VENDOR_HYP.
> >
> > Signed-off-by: Raghavendra Rao Ananta <rananta@...gle.com>
> >
> > ---
> >  tools/arch/arm64/include/uapi/asm/kvm.h | 18 ++++++++++++++++++
> >  1 file changed, 18 insertions(+)
>
> Won't we have the latest UAPI headers available in usr/include/ at build
> time?
>
I think we do. Wasn't aware of this. I'll delete the patch.

Regards,
Raghavendra
> --
> Oliver
>
> > diff --git a/tools/arch/arm64/include/uapi/asm/kvm.h b/tools/arch/arm64/include/uapi/asm/kvm.h
> > index b3edde68bc3e..a1d0e8e69eed 100644
> > --- a/tools/arch/arm64/include/uapi/asm/kvm.h
> > +++ b/tools/arch/arm64/include/uapi/asm/kvm.h
> > @@ -281,6 +281,24 @@ struct kvm_arm_copy_mte_tags {
> >  #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_NOT_REQUIRED     3
> >  #define KVM_REG_ARM_SMCCC_ARCH_WORKAROUND_2_ENABLED          (1U << 4)
> >
> > +#define KVM_REG_ARM_STD                      KVM_REG_ARM_FW_REG(3)
> > +enum kvm_reg_arm_std_bmap {
> > +     KVM_REG_ARM_STD_TRNG_V1_0,
> > +     KVM_REG_ARM_STD_BMAP_MAX,
> > +};
> > +
> > +#define KVM_REG_ARM_STD_HYP          KVM_REG_ARM_FW_REG(4)
> > +enum kvm_reg_arm_std_hyp_bmap {
> > +     KVM_REG_ARM_STD_HYP_PV_TIME_ST,
> > +     KVM_REG_ARM_STD_HYP_BMAP_MAX,
> > +};
> > +
> > +#define KVM_REG_ARM_VENDOR_HYP               KVM_REG_ARM_FW_REG(5)
> > +enum kvm_reg_arm_vendor_hyp_bmap {
> > +     KVM_REG_ARM_VENDOR_HYP_PTP,
> > +     KVM_REG_ARM_VENDOR_HYP_BMAP_MAX,
> > +};
> > +
> >  /* SVE registers */
> >  #define KVM_REG_ARM64_SVE            (0x15 << KVM_REG_ARM_COPROC_SHIFT)
> >
> > --
> > 2.33.1.1089.g2158813163f-goog
> >