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Fri, 14 Feb 2020 20:35:43 +0100 (CET) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id Ms6M3XX-mOoS; Fri, 14 Feb 2020 20:35:43 +0100 (CET) Received: from pc16570vm.idsi0.si.c-s.fr (unknown [192.168.4.90]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 951EF8B899; Fri, 14 Feb 2020 20:35:43 +0100 (CET) Subject: Re: RESEND: Re: Problem booting a PowerBook G4 Aluminum after commit cd08f109 with CONFIG_VMAP_STACK=y To: Larry Finger References: <159ed5d8-376b-1642-fb4b-01406d671cf1@c-s.fr> <6a1802b8-c6a7-d091-1036-689e089b786f@lwfinger.net> <608a1a18-a0ed-2059-bfbc-081c9ef1bfd8@lwfinger.net> <7f63e8a8-95c5-eeca-dc79-3c13f4d98d39@lwfinger.net> <9429f86e-8c7d-b2e6-6dc1-8f58c44baadc@c-s.fr> <2da19b26-9a44-2e4e-ab7d-d3fff65091bd@lwfinger.net> <02ce1278-5880-063c-2281-178edd541232@c-s.fr> From: Christophe Leroy Message-ID: <074f2468-1fbe-0714-df58-b6d2e1d2725b@c-s.fr> Date: Fri, 14 Feb 2020 19:35:43 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "linuxppc-dev@ozlabs.org" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 02/14/2020 06:24 PM, Larry Finger wrote: > On 2/14/20 12:24 AM, Christophe Leroy wrote: >> >> Did you try with the patch at >> https://patchwork.ozlabs.org/patch/1237387/ ? > > Christophe, > > When I apply that patch, there is an error at > > --- a/arch/powerpc/kernel/head_32.S > +++ b/arch/powerpc/kernel/head_32.S > @@ -301,6 +301,39 @@ MachineCheck: > . = 0x300 > DO_KVM 0x300 > DataAccess: > > It complains about "an attempt to move .org backwards". > Argh ! > When I change the 0x300 to 0x310 in two places, it builds OK. Is that OK? No you can't do that. The following should solve it for your case. --- diff --git a/arch/powerpc/kernel/head_32.S b/arch/powerpc/kernel/head_32.S index 32875afb3319..f9941b766f63 100644 --- a/arch/powerpc/kernel/head_32.S +++ b/arch/powerpc/kernel/head_32.S @@ -270,6 +270,9 @@ __secondary_hold_acknowledge: * pointer when we take an exception from supervisor mode.) * -- paulus. */ +#ifdef CONFIG_PPC_CHRP +1: b machine_check_in_rtas +#endif . = 0x200 DO_KVM 0x200 MachineCheck: @@ -290,12 +293,9 @@ MachineCheck: 7: EXCEPTION_PROLOG_2 addi r3,r1,STACK_FRAME_OVERHEAD #ifdef CONFIG_PPC_CHRP - bne cr1,1f + bne cr1,1b #endif EXC_XFER_STD(0x200, machine_check_exception) -#ifdef CONFIG_PPC_CHRP -1: b machine_check_in_rtas -#endif /* Data access exception. */ . = 0x300 --- Christophe