linux-kernel - Re: [PATCH v3 11/15] MIPS: generic: Add support for Ingenic SoCs

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Date:   Mon, 12 Oct 2020 07:33:19 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Paul Cercueil <paul@...pouillou.net>
Cc:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        "Maciej W . Rozycki" <macro@...ux-mips.org>,
        Paul Burton <paulburton@...nel.org>,
        Zhou Yanjie <zhouyanjie@...yeetech.com>, od@...c.me,
        linux-kernel@...r.kernel.org, linux-mips@...r.kernel.org
Subject: Re: [PATCH v3 11/15] MIPS: generic: Add support for Ingenic SoCs

On Sun, Sep 06, 2020 at 09:29:31PM +0200, Paul Cercueil wrote:
> Add support for Ingenic SoCs in arch/mips/generic/.
> 
> The Kconfig changes are here to ensure that it is possible to compile
> either a generic kernel that supports Ingenic SoCs, or a Ingenic-only
> kernel, both using the same code base, to avoid duplicated code.
> 
> Signed-off-by: Paul Cercueil <paul@...pouillou.net>

This patch results in the following build error (mips:allmodconfig).

In file included from <command-line>:
arch/mips/mm/init.c: In function 'mem_init':
include/linux/compiler_types.h:319:38: error: call to '__compiletime_assert_331'
	declared with attribute error: BUILD_BUG_ON failed:
		IS_ENABLED(CONFIG_32BIT) && (_PFN_SHIFT > PAGE_SHIFT)

Bisect log attached.

Guenter

---
# bad: [d67bc7812221606e1886620a357b13f906814af7] Add linux-next specific files for 20201009
# good: [549738f15da0e5a00275977623be199fbbf7df50] Linux 5.9-rc8
git bisect start 'HEAD' 'v5.9-rc8'
# bad: [b71be15b496cc71a3434a198fc1a1b9e08af6c57] Merge remote-tracking branch 'bpf-next/master' into master
git bisect bad b71be15b496cc71a3434a198fc1a1b9e08af6c57
# bad: [6be11f939f380ef14bc94242cb0262197ce2a054] Merge remote-tracking branch 'i2c/i2c/for-next' into master
git bisect bad 6be11f939f380ef14bc94242cb0262197ce2a054
# good: [c03a115d8ad8a87b6d275c3c91c13bc111217bf6] Merge remote-tracking branch 'samsung-krzk/for-next' into master
git bisect good c03a115d8ad8a87b6d275c3c91c13bc111217bf6
# bad: [bdd0ef71b0d7d6a8f1d59af57dc73d19ddc26ad0] Merge remote-tracking branch 'f2fs/dev' into master
git bisect bad bdd0ef71b0d7d6a8f1d59af57dc73d19ddc26ad0
# bad: [0c4bd40a7ccd06122c1942f525b714abcd9efe36] Merge remote-tracking branch 'powerpc/next' into master
git bisect bad 0c4bd40a7ccd06122c1942f525b714abcd9efe36
# bad: [744d2c114d58c11fd76d572021d7ef3c55a1a225] Merge remote-tracking branch 'nds32/next' into master
git bisect bad 744d2c114d58c11fd76d572021d7ef3c55a1a225
# good: [1e9f9330cea616f9f2baf8144f049e4b405715dd] Merge remote-tracking branch 'csky/linux-next' into master
git bisect good 1e9f9330cea616f9f2baf8144f049e4b405715dd
# bad: [b350041e6f23a71f63f1eee6d939c846838e7e25] MIPS: alchemy: remove unused ALCHEMY_GPIOINT_AU1000
git bisect bad b350041e6f23a71f63f1eee6d939c846838e7e25
# good: [43df4eb2fc9511e09c66252c3fec4f8933a77c73] MIPS: Replace SIBYTE_1956_WAR by CONFIG_SB1_PASS_2_WORKAROUNDS
git bisect good 43df4eb2fc9511e09c66252c3fec4f8933a77c73
# good: [13a0ea28e8c698cc0d600fdeed8da3e4d478b97e] MIPS: generic: Init command line with fw_init_cmdline()
git bisect good 13a0ea28e8c698cc0d600fdeed8da3e4d478b97e
# bad: [d41afc398fbc9dfb8c40b951e97a7f0283346c6a] MAINTAINERS: Update paths to Ingenic platform code
git bisect bad d41afc398fbc9dfb8c40b951e97a7f0283346c6a
# bad: [f0f4a753079c636d5d43a102edbde0dad1e7de51] MIPS: generic: Add support for Ingenic SoCs
git bisect bad f0f4a753079c636d5d43a102edbde0dad1e7de51
# good: [c3e2ee657418f4f2bff1269c0550f8135ed0c927] MIPS: generic: Add support for zboot
git bisect good c3e2ee657418f4f2bff1269c0550f8135ed0c927
# good: [02bd530f888c6d6ba4995c3afcd10f87c136f173] MIPS: generic: Increase NR_IRQS to 256
git bisect good 02bd530f888c6d6ba4995c3afcd10f87c136f173
# first bad commit: [f0f4a753079c636d5d43a102edbde0dad1e7de51] MIPS: generic: Add support for Ingenic SoCs