> Subject: Re: [PATCH 08/10] arm64: sysregs: correct SCTLR_EL1_RES > > On 11.08.20 09:49, Peng Fan wrote: > >> Subject: Re: [PATCH 08/10] arm64: sysregs: correct SCTLR_EL1_RES > >> > >> On 07.08.20 05:06, [email protected] wrote: > >>> From: Peng Fan <[email protected]> > >>> > >>> bit23 is SPAN, not reserved bit. > >>> > >> > >> This is not correct, see D7.2.81 in the ARMv8 manual. > >> > >> Where did you get this from? What is it trying to fix? > > > > DDI0487D_a_armv8_arm, > > " D12.2.100 SCTLR_EL1, System Control Register (EL1)" > > > > This is just to align with Linux Kernel, since the head.S in the > > bootloader needs this. > > OK, this is ARMv8.1+, I was looking at 8.0. Are you sure the reset value > changed from 8.0 to 8.1? We definitely need to remain compatible to 8.0.
See https://elixir.bootlin.com/linux/latest/source/arch/arm64/include/asm/sysreg.h#L577 It not have bit23 reserved. Thanks, Peng. Regards, Peng. > > Jan > > -- > Siemens AG, Corporate Technology, CT RDA IOT SES-DE Corporate > Competence Center Embedded Linux -- You received this message because you are subscribed to the Google Groups "Jailhouse" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/jailhouse-dev/AM5PR0402MB2756172E76077618D002D48088450%40AM5PR0402MB2756.eurprd04.prod.outlook.com.
