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Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jbP9X-00044l-Rl; Wed, 20 May 2020 13:52:59 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jbP9U-00043q-Lb for linux-arm-kernel@lists.infradead.org; Wed, 20 May 2020 13:52:57 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 8AB8930E; Wed, 20 May 2020 06:52:55 -0700 (PDT) Received: from [10.37.8.206] (unknown [10.37.8.206]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id E31ED3F52E; Wed, 20 May 2020 06:52:53 -0700 (PDT) Subject: Re: [PATCH V4 15/17] arm64/cpufeature: Add remaining feature bits in ID_AA64DFR0 register To: anshuman.khandual@arm.com, linux-arm-kernel@lists.infradead.org References: <1589881254-10082-1-git-send-email-anshuman.khandual@arm.com> <1589881254-10082-16-git-send-email-anshuman.khandual@arm.com> From: Suzuki K Poulose Message-ID: <5bad1e13-e498-b33e-5305-336d855c2c8b@arm.com> Date: Wed, 20 May 2020 14:57:39 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: <1589881254-10082-16-git-send-email-anshuman.khandual@arm.com> Content-Language: en-US X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200520_065256_752511_A6F11D4C X-CRM114-Status: GOOD ( 17.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, catalin.marinas@arm.com, will@kernel.org, linux-kernel@vger.kernel.org, maz@kernel.org Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 05/19/2020 10:40 AM, Anshuman Khandual wrote: > Enable MTPMU and TRACEFILT features bits in ID_AA64DFR0 register as per ARM > DDI 0487F.a specification. > > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Mark Rutland > Cc: Suzuki K Poulose > Cc: linux-arm-kernel@lists.infradead.org > Cc: linux-kernel@vger.kernel.org > > Suggested-by: Will Deacon > Signed-off-by: Anshuman Khandual > --- > arch/arm64/include/asm/sysreg.h | 2 ++ > arch/arm64/kernel/cpufeature.c | 2 ++ > 2 files changed, 4 insertions(+) > > diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h > index a572069ccf6e..4bcd21cc2d68 100644 > --- a/arch/arm64/include/asm/sysreg.h > +++ b/arch/arm64/include/asm/sysreg.h > @@ -766,6 +766,8 @@ > #define ID_AA64MMFR2_CNP_SHIFT 0 > > /* id_aa64dfr0 */ > +#define ID_AA64DFR0_MTPMU_SHIFT 48 > +#define ID_AA64DFR0_TRACEFILT_SHIFT 40 > #define ID_AA64DFR0_PMSVER_SHIFT 32 > #define ID_AA64DFR0_CTX_CMPS_SHIFT 28 > #define ID_AA64DFR0_WRPS_SHIFT 20 > diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c > index 6338151f263c..986974be0178 100644 > --- a/arch/arm64/kernel/cpufeature.c > +++ b/arch/arm64/kernel/cpufeature.c > @@ -366,6 +366,8 @@ static const struct arm64_ftr_bits ftr_id_mmfr0[] = { > }; > > static const struct arm64_ftr_bits ftr_id_aa64dfr0[] = { > + S_ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_MTPMU_SHIFT, 4, 0), > + ARM64_FTR_BITS(FTR_HIDDEN, FTR_STRICT, FTR_LOWER_SAFE, ID_AA64DFR0_TRACEFILT_SHIFT, 4, 0), We maske both the fields for KVM in AArch32 ID registers. We should do the same here. Suzuki _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel