linux-kernel - Re: [BUG]: KVM: arm64: Fix symbol dependency in __hyp_call_panic

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Message-ID: <CAOQ_QshK6HoaLqbaCVEgOPACK==Wb3-ADUhoUeQ0W67bK9zqqw@mail.gmail.com>
Date:   Tue, 26 Jan 2021 10:23:25 -0800
From:   Oliver Upton <oupton@...gle.com>
To:     Marc Zyngier <maz@...nel.org>
Cc:     Sasha Levin <sashal@...nel.org>, dbrazdil@...gle.com,
        hns@...delico.com,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [BUG]: KVM: arm64: Fix symbol dependency in __hyp_call_panic_nvhe

On Mon, Jan 25, 2021 at 12:56 PM Marc Zyngier <maz@...nel.org> wrote:
> - Cherry-pick 9fd339a45be5 ("arm64: Work around broken GCC 4.9
>   handling of "S" constraint"), which works around this particular GCC
>   bug
>
> - Cherry-pick dca5244d2f5b ("compiler.h: Raise minimum version of GCC
>   to 5.1 for arm64"), which forbids GCC 4.9 as it has been
>   demonstrated to mis-compile the kernel (and this patch is targeting
>   stable anyway)

If the latter is hitting stable then it sounds like high time to throw
out my broken GCC. Thanks Marc!

--
Oliver