linux-kernel - Re: [PATCH] x86/mm/kaiser: avoid 32-bit/PAE build warning

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Message-ID: <CAK8P3a2ZZMHQ0B=w=qy-rcG21ShZ6ycvcP4M4ZPNwN2EadQA3Q@mail.gmail.com>
Date:   Mon, 19 Feb 2018 11:04:18 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Greg KH <gregkh@...uxfoundation.org>
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        "the arch/x86 maintainers" <x86@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        stable <stable@...r.kernel.org>
Subject: Re: [PATCH] x86/mm/kaiser: avoid 32-bit/PAE build warning

On Thu, Feb 15, 2018 at 10:00 PM, Arnd Bergmann <arnd@...db.de> wrote:
> On Thu, Feb 15, 2018 at 5:43 PM, Greg KH <gregkh@...uxfoundation.org> wrote:
>> On Thu, Feb 15, 2018 at 04:37:10PM +0100, Arnd Bergmann wrote:
>>> In order to test this, I backported some 35 other (mostly trivial) patches later
>>> kernels, and now I have a 4.9.80 based tree that produces a clean randconfig
>>> build every time on arm64 and x86_64. If you want, I'll send you the list
>>> of the required backports as well. From what I can tell, they are all
>>> harmless (unused functions, missing Kconfig dependencies etc), but
>>> being able to do randconfig builds reliable gives us an additional tool for
>>> regression testing the stable kernels.
>>
>> Sure, I'll be glad to take those.
>
> Here are the ones that I think should apply cleanly
>
> ac29fc66855b drm/i915: fix intel_backlight_device_register declaration
> 23f919d4ad0e shmem: avoid maybe-uninitialized warning
> aa01338c0184 clk: sunxi-ng: fix build error without CONFIG_RESET_CONTROLLER
> fbdf0e28d061 vmxnet3: prevent building with 64K pages
> 11d8b05855f3 perf/x86: Shut up false-positive -Wmaybe-uninitialized warning
> 42db500a551f PCI: vmd: Fix suspend handlers defined-but-not-used warning
> fbc2a294f29e gpio: intel-mid: Fix build warning when !CONFIG_PM
> b4aca383f9af platform/x86: intel_mid_thermal: Fix suspend handlers
> unused warning
> c8bd2ac3b4c6 usb: musb: fix compilation warning on unused function
> de5bbdd01cf9 PCI: Change pci_host_common_probe() visibility
> c0bfc549e962 perf: xgene: Include module.h
> 484c7bbf2649 video: fbdev: via: remove possibly unused variables
> 067fdeb2f391 dmaengine: zx: fix build warning
> f46e7cd36b5f scsi: advansys: fix build warning for PCI=n
> d4b2ac63b0ea x86/ras/inject: Make it depend on X86_LOCAL_APIC=y
> b115bebc07f2 gpio: xgene: mark PM functions as __maybe_unused
> f13d52cb3fad arm64: define BUG() instruction without CONFIG_BUG
> 75e2f0a6b161 x86/fpu/math-emu: Fix possible uninitialized variable use
> e572d0887137 tools build: Add tools tree support for 'make -s'
> d460131dd505 x86/build: Silence the build with "make -s"
> 68fd77cf8a4b thermal: fix INTEL_SOC_DTS_IOSF_CORE dependencies
> c2ce3f5d89d5 x86: add MULTIUSER dependency for KVM
> d689c64d189e x86/platform: Add PCI dependency for PUNIT_ATOM_DEBUG
> 3ba5b5ea7dc3 x86/vm86: Fix unused variable warning if THP is disabled
> 44a5b977128c scsi: advansys: fix uninitialized data access
> 2e449048a25e arm64: Kconfig: select COMPAT_BINFMT_ELF only when
> BINFMT_ELF is set
> 46a049dae771 ALSA: hda/ca0132 - fix possible NULL pointer use
> ab4949640d66 reiserfs: avoid a -Wmaybe-uninitialized warning

and some more:

7fc1503c906f cw1200: fix bogus maybe-uninitialized warning
3cd18d198173 security/keys: BIG_KEY requires CONFIG_CRYPTO
7e1751001818 drm: exynos: mark pm functions as __maybe_unused
9e343e87d2c4 mtd: cfi: convert inline functions to macros
3cd890dbe2a4 media: dvb-frontends: fix i2c access helpers for KASAN
d4c2269b3d5d rbd: silence bogus -Wmaybe-uninitialized warning
b74c0a9969f2 drm/nouveau: hide gcc-4.9 -Wmaybe-uninitialized
ea4348c8462a Input: tca8418_keypad - hide gcc-4.9 -Wmaybe-uninitialized warning
16c3ada89cff media: r820t: fix r820t_write_reg for KASAN
e42eef4ba388 KVM: add X86_LOCAL_APIC dependency
f1f5929cd971 shmem: fix compilation warnings on unused functions
3538aa6ecfb2 [media] tc358743: fix register i2c_rd/wr functions
fa6317eedd63 [media] go7007: add MEDIA_CAMERA_SUPPORT dependency
190b23b4eb99 [media] em28xx: only use mt9v011 if camera support is enabled
27430d19a916 [media] tw5864: use dev_warn instead of WARN to shut up warning
27d807180ae0 ISDN: eicon: reduce stack size of sig_ind function
dbed87a9d3a8 clk: meson: gxbb: fix build error without RESET_CONTROLLER

There are a few more that that don't apply cleanly or that I had to
write from scratch,
I'll follow up with a patch series to stable@....o.

      Arnd