From: gengdongjiu <gengdongjiu@huawei.com>
To: Mark Rutland <mark.rutland@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>, <catalin.marinas@arm.com>,
<will.deacon@arm.com>, <marc.zyngier@arm.com>,
<christoffer.dall@linaro.org>, <james.morse@arm.com>,
<ard.biesheuvel@linaro.org>, <cov@codeaurora.org>,
<Dave.Martin@arm.com>, <suzuki.poulose@arm.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <kvmarm@lists.cs.columbia.edu>
Subject: Re: [PATCH v1 1/3] arm64: add a macro for SError synchronization
Date: Thu, 2 Nov 2017 16:52:37 +0800 [thread overview]
Message-ID: <399edb73-ec0d-1f73-d244-0d10f0a9e169@huawei.com> (raw)
In-Reply-To: <20171101141603.4ppgwup4grnmcswe@lakrids.cambridge.arm.com>
On 2017/11/1 22:16, Mark Rutland wrote:
>> it will report Error.
> Alternatives cannot be nested. You need to define a cap like:
>
> ARM64_HAS_RAS_NOT_IESB
>
> ... which is set when ARM64_HAS_RAS_EXTN && !ARM64_HAS_IESB.
>
> Then you can do:
>
> alternative_if ARM64_HAS_RAS_NOT_IESB
> esb
> alternative_else_nop_endif
>
> See ARM64_ALT_PAN_NOT_UAO for an example.
>
> That said, as Robin points out we may not even need the alternative.
Ok, got it. thank you very much for your point and opinion
>
> Thanks,
> Mark.
next prev parent reply other threads:[~2017-11-02 8:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-11-01 19:14 [PATCH v1 0/3] manually add Error Synchronization Barrier at exception handler entry and exit Dongjiu Geng
2017-11-01 11:21 ` Robin Murphy
2017-11-01 11:32 ` James Morse
2017-11-01 12:44 ` gengdongjiu
2017-11-01 19:14 ` [PATCH v1 1/3] arm64: add a macro for SError synchronization Dongjiu Geng
2017-11-01 11:24 ` Robin Murphy
2017-11-01 12:54 ` gengdongjiu
2017-11-01 13:31 ` Robin Murphy
2017-11-01 14:16 ` Mark Rutland
2017-11-02 8:52 ` gengdongjiu [this message]
2017-11-01 19:14 ` [PATCH v1 2/3] arm64: add error synchronization barrier in kernel_entry/kernel_exit Dongjiu Geng
2017-11-04 17:34 ` kbuild test robot
2017-11-01 19:14 ` [PATCH v1 3/3] KVM: arm64: add ESB in exception handler entry and exit Dongjiu Geng
2017-11-04 18:49 ` kbuild test robot
-- strict thread matches above, loose matches on Subject: below --
2017-11-01 14:13 [PATCH v1 1/3] arm64: add a macro for SError synchronization gengdongjiu
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