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Message-ID: <20230127162755.GB6090@alpha.franken.de> Date: Fri, 27 Jan 2023 17:27:55 +0100 From: Thomas Bogendoerfer <tsbogend@...ha.franken.de> To: Sander Vanheule <sander@...nheule.net> Cc: linux-mips@...r.kernel.org, linux-kernel@...r.kernel.org, Olliver Schinagl <oliver@...inagl.nl> Subject: Re: [PATCH] mips: Realtek RTL: select NO_EXCEPT_FILL On Sun, Jan 15, 2023 at 01:19:22PM +0100, Sander Vanheule wrote: > The CPUs in these SoCs support MIPS32 R2, and allow ebase relocation. > Even if the default exception base of 0x80000000 is used, the > MIPS_GENERIC load address of 0x80100000 leaves sufficient space to not > need an extra 0x400 bytes of padding. > > Suggested-by: Olliver Schinagl <oliver@...inagl.nl> > Signed-off-by: Sander Vanheule <sander@...nheule.net> > --- > Olliver has suggested to make this change, in order to reduce the delta > with a fully generic MIPS kernel. > I hope the patch description makes sense, as I based the argumentation > on the behaviour of the code, and similar commits 7d6d28377783 ("MIPS: > Loongson64: select NO_EXCEPT_FILL") and dd54dedd947d ("MIPS: BCM47XX: > select NO_EXCEPT_FILL"). The change was tested on an RTL8380 and an > RTL8393 device, where it appears to work as expected. > > Best, > Sander > > arch/mips/Kconfig | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig > index 2db5c853992e..a8895aaa490e 100644 > --- a/arch/mips/Kconfig > +++ b/arch/mips/Kconfig > @@ -627,6 +627,7 @@ config MACH_REALTEK_RTL > select IRQ_MIPS_CPU > select CEVT_R4K > select CSRC_R4K > + select NO_EXCEPT_FILL > select SYS_HAS_CPU_MIPS32_R1 > select SYS_HAS_CPU_MIPS32_R2 > select SYS_SUPPORTS_32BIT_KERNEL > -- > 2.39.0 applied to mips-next. Thomas. -- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
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