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Mon, 13 Apr 2026 09:47:11 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: AWTLBUgPHbtJ Date: Mon, 13 Apr 2026 15:46:50 +0200 From: "Arnd Bergmann" To: "David Laight" Cc: "Geert Uytterhoeven" , "Ping-Ke Shih" , "rtl8821cerfe2@gmail.com" , "kernel test robot" , "oe-kbuild-all@lists.linux.dev" , "linux-kernel@vger.kernel.org" Message-Id: <6284c801-e378-4861-9c1e-f167bc14ef89@app.fastmail.com> In-Reply-To: <20260413140109.2b20de7c@pumpkin> References: <202604101721.fsv5XmCX-lkp@intel.com> <2fb2a553-3e67-497e-b964-7fa5f940e8a1@gmail.com> <1e02bd10a68747f4a342caedde76ef04@realtek.com> <6b6310b8-2b0d-4390-992e-5ccd81cef2e0@app.fastmail.com> <20260413140109.2b20de7c@pumpkin> Subject: Re: include/linux/build_bug.h:78:41: error: static assertion failed: "sizeof(struct rtw8814a_efuse) == 512" Content-Type: text/plain Content-Transfer-Encoding: 7bit On Mon, Apr 13, 2026, at 15:01, David Laight wrote: > On Mon, 13 Apr 2026 11:30:25 +0200 "Arnd Bergmann" wrote: >> On Mon, Apr 13, 2026, at 11:15, Geert Uytterhoeven wrote: >> >> Annotating the union as '__packed' is the correct fix for >> the theoretical users of OABI, and does nothing on other >> supported targets in Linux. > > The other option is to ensure the specific drivers aren't ever compiled > for !CONFIG_AEABI. > Then it'll all get tidied up when you remove it. That sounds like even more work, for my own testing I have just stopped building OABI configuration altogether, though I'm still testing ARMv4 kernels. > I read that the patches to remove 486 support have been merged. > I'm sure it would have made sense to drop everything before P-Pro > so that cmov can be used. That is an entirely unrelated discussion of course. I don't think there is any need to discontinue support for 586-class processors (Pentium, Pentium MMX, MediaGX/GeodeGX1, AMD K6, Vortex86/DX/MX, Via C3) any earlier than the rest of the x86-32 kernel support: There is no practical difference other than compiler flags, and the Vortex86MX+ is still in production (originally released in 2010 with a projected 10 year support life). This is very different from earlier 486-class CPUs that lack CMPXCHG8B and TSC. Arnd