From: catalin.marinas@arm.com (Catalin Marinas)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH V2 0/3] Emulate MRS instructions by parsing ESR_ELx.ISS
Date: Fri, 21 Sep 2018 11:10:23 +0100 [thread overview]
Message-ID: <20180921101022.GB166997@arrakis.emea.arm.com> (raw)
In-Reply-To: <1537416381-13674-1-git-send-email-anshuman.khandual@arm.com>
On Thu, Sep 20, 2018 at 09:36:18AM +0530, Anshuman Khandual wrote:
> Armv8.4-A extension enables MRS instruction encodings inside ESR_ELx.ISS
> during exception class ESR_ELx_EC_SYS64 (0x18). This encoding can be used
> to emulate MRS instructions which can avoid fetch/decode from user space
> thus improving performance. The patch series here enables this new method
> of emulating MRS instruction. For this purpose we factorizes the existing
> emulate_mrs() function and while here, add new macro ESR_ELx_SYS64_ISS_RT.
>
> Changes in V2:
>
> - Replaced the argument 'dst' as 'rt' in second patch per Suzuki
> - Added review tags from Suzuki
>
> Anshuman Khandual (3):
> arm64/cpufeatures: Introduce ESR_ELx_SYS64_ISS_RT()
> arm64/cpufeatures: Factorize emulate_mrs()
> arm64/cpufeatures: Emulate MRS instructions by parsing ESR_ELx.ISS
Queued for 4.20. Thanks.
--
Catalin
prev parent reply other threads:[~2018-09-21 10:10 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-20 4:06 [PATCH V2 0/3] Emulate MRS instructions by parsing ESR_ELx.ISS Anshuman Khandual
2018-09-20 4:06 ` [PATCH V2 1/3] arm64/cpufeatures: Introduce ESR_ELx_SYS64_ISS_RT() Anshuman Khandual
2018-09-20 4:06 ` [PATCH V2 2/3] arm64/cpufeatures: Factorize emulate_mrs() Anshuman Khandual
2018-09-20 4:06 ` [PATCH V2 3/3] arm64/cpufeatures: Emulate MRS instructions by parsing ESR_ELx.ISS Anshuman Khandual
2018-09-21 10:10 ` Catalin Marinas [this message]
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