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Message-ID: <Z-8EwQksGi36v-QQ@desktop0a> Date: Thu, 3 Apr 2025 23:59:29 +0200 From: Roberto Ricci <io@...icci.it> To: Dave Young <dyoung@...hat.com> Cc: Baoquan He <bhe@...hat.com>, ebiederm@...ssion.com, rafael@...nel.org, pavel@....cz, ytcoode@...il.com, kexec@...ts.infradead.org, linux-pm@...r.kernel.org, akpm@...ux-foundation.org, regressions@...ts.linux.dev, linux-kernel@...r.kernel.org Subject: Re: [REGRESSION] Kernel booted via kexec fails to resume from hibernation On 2025-03-31 11:22 +0800, Dave Young wrote: > > With v4.9.337, kexec (via kexec_load) + hibernation works. > > With v5.4.291 it doesn't. > > I'm not sure how bisection could be done in this case. I just found out that 5.0 is not what comes after 4.9 [facepalm]. With v4.14.336 kexec_load + hibernation doesn't work either. I'm still having a bit of trouble finding the commits which fixed various build and boot issues and cherry-picking them. But now at least I have fewer bisection steps. > Not confident, but maybe you can try latest mainline kernel see if the > below commit helps: > https://web.git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a2498e5c453b3d8d054d77751487cd593332f8c2 > > I noticed the e820 export is different for v4.9.337 and v5.4.291 Unfortunately, this commit doesn't fix my issue. Latest mainline works when using kexec_file_load (but not kexec_load) because it contains https://lore.kernel.org/all/20250214090651.3331663-1-rppt@kernel.org/
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