linux-kernel - Re: [PATCH] misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit systems

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Message-Id: <865236b7-fd09-43cd-94fe-c07da6a903c5@app.fastmail.com>
Date: Wed, 17 Jul 2024 20:52:05 +0200
From: "Arnd Bergmann" <arnd@...db.de>
To: "Vamsi Attunuru" <vattunuru@...vell.com>,
 "Greg Kroah-Hartman" <gregkh@...uxfoundation.org>
Cc: linux-kernel@...r.kernel.org, "Nathan Chancellor" <nathan@...nel.org>,
 "Jeff Johnson" <quic_jjohnson@...cinc.com>
Subject: Re: [PATCH] misc: Kconfig: exclude mrvl-cn10k-dpi compilation for 32-bit
 systems

On Wed, Jul 17, 2024, at 18:37, Vamsi Attunuru wrote:
> Upon adding CONFIG_ARCH_THUNDER & CONFIG_COMPILE_TEST dependency,
> compilation errors arise on 32-bit ARM with writeq() & readq() calls
> which are used for accessing 64-bit values.
>
> Since DPI hardware only works with 64-bit register accesses, using
> CONFIG_64BIT dependency to skip compilation on 32-bit systems.
>
> Fixes: a5e43e2d202d ("misc: Kconfig: add a new dependency for 
> MARVELL_CN10K_DPI")
> Signed-off-by: Vamsi Attunuru <vattunuru@...vell.com>
> Tested-by: Nathan Chancellor <nathan@...nel.org>
> Tested-by: Jeff Johnson <quic_jjohnson@...cinc.com>

Acked-by: Arnd Bergmann <arnd@...db.de>