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Wed, 7 Aug 2019 17:31:51 +0000 Received: from BYAPR04MB3782.namprd04.prod.outlook.com ([fe80::ac9a:967e:70a5:e926]) by BYAPR04MB3782.namprd04.prod.outlook.com ([fe80::ac9a:967e:70a5:e926%7]) with mapi id 15.20.2115.005; Wed, 7 Aug 2019 17:31:51 +0000 From: Atish Patra To: "paul.walmsley@sifive.com" Subject: Re: [PATCH v3 3/5] RISC-V: Fix unsupported isa string info. Thread-Topic: [PATCH v3 3/5] RISC-V: Fix unsupported isa string info. 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What > > > do you > > > think? > > > > > > > Yup. As DT binding only mention imafdc, mandatory extensions should > > contain only that and just consider "su" extensions are considered > > as > > implicit as we are running Linux. > > Discussing this with Andrew and Palmer, it looks like "su" is > currently > non-compliant. Section 22.6 of the user-level specification states > that > the "s" character indicates that a longer standard supervisor > extension > name will follow. So far I don't think any of these have been > defined. > > > Do you think QEMU DT should be updated to reflect that ? > > Yes. > > > > There's no Kconfig option by this name, and we're requiring > > > compressed > > > > Sorry. This was a typo. It should have been CONFIG_RISCV_ISA_C. > > > > > instruction support as part of the RISC-V Linux baseline. Could > > > you > > > share the rationale behind this? > > > > I think I added this check at the config file. Looking at the > > Kconfig, > > RISCV_ISA_C is always enabled. So we can drop this. > > OK great. Do you want to resend an updated patch, or would you like > me to > fix it up here? > I am sending the patch right now. We can remove the 'S' mode check as palmer have already sent the QEMU patch as well, . Regards, Atish > I'll also send a patch to drop CONFIG_RISCV_ISA_C. > > > - Paul _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv