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Date: Sun, 23 Mar 2014 21:23:23 +0100 From: Arnd Bergmann <arnd@...db.de> To: linux-arm-kernel@...ts.infradead.org Cc: Nicolas Pitre <nicolas.pitre@...aro.org>, Rob Herring <robherring2@...il.com>, Rob Herring <robh@...nel.org>, Russell King <linux@....linux.org.uk>, Catalin Marinas <catalin.marinas@....com>, x86@...nel.org, Will Deacon <will.deacon@....com>, linux-kernel@...r.kernel.org, linux-serial@...r.kernel.org, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, Jiri Slaby <jslaby@...e.cz> Subject: Re: [PATCH 7/8] tty/serial: add arm64 semihosting earlycon On Sunday 23 March 2014 16:04:41 Nicolas Pitre wrote: > On Fri, 21 Mar 2014, Rob Herring wrote: > > > From: Rob Herring <robh@...nel.org> > > > > Add earlycon support for the arm64 semihosting debug serial interface. > > This allows enabling a debug console when early_params are processed. > > This is based on the arm64 earlyprintk smh support and is intended to > > replace it. > > > > This is named arm rather than arm64 in hopes it will be used for both, > > but only arm64 is supported ATM. > > It can't be used for both as the semihosting calls themselves need > assembly code and this is not compatible with the equivalent ARM32 > calls. So I'd suggest naming this "arm64" to avoid potential confusion. How about using an compile-time conditional to put both inline assemblies in there? While the driver is rather trivial to start with, I don't see a point in duplicating it either. Arnd -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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