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Tue, 28 Apr 2026 15:37:24 -0700 (PDT) List-Id: Commit messages for all branches of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-all List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-all@freebsd.org Sender: owner-dev-commits-src-all@FreeBSD.org MIME-Version: 1.0 References: <69e37435.3b47e.5048e12@gitrepo.freebsd.org> In-Reply-To: From: Adrian Chadd Date: Tue, 28 Apr 2026 15:37:14 -0700 X-Gm-Features: AVHnY4K-lEmtsy1QIa8tVU48UYZ4UqB7fXaJm5oPIKa1f8LAJbhX8DzrJPC3RIE Message-ID: Subject: Re: git: ba94d7574972 - main - stand/common/load_elf: Do kernel module relocations for PPC To: Lexi Winter Cc: src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Content-Type: text/plain; charset="UTF-8" X-Spamd-Result: default: False [-1.54 / 15.00]; ARC_ALLOW(-1.00)[google.com:s=arc-20240605:i=1]; NEURAL_SPAM_MEDIUM(1.00)[1.000]; NEURAL_HAM_LONG(-1.00)[-0.995]; NEURAL_HAM_SHORT(-0.54)[-0.544]; FORGED_SENDER(0.30)[adrian@freebsd.org,adrianchadd@gmail.com]; R_SPF_ALLOW(-0.20)[+ip4:209.85.128.0/17]; DMARC_POLICY_SOFTFAIL(0.10)[freebsd.org : SPF not aligned (relaxed), No valid DKIM,none]; RWL_MAILSPIKE_GOOD(-0.10)[209.85.160.173:from]; MIME_GOOD(-0.10)[text/plain]; MIME_TRACE(0.00)[0:+]; MISSING_XM_UA(0.00)[]; ASN(0.00)[asn:15169, ipnet:209.85.128.0/17, country:US]; FREEMAIL_ENVFROM(0.00)[gmail.com]; TO_DN_SOME(0.00)[]; RCVD_COUNT_ONE(0.00)[1]; R_DKIM_NA(0.00)[]; MLMMJ_DEST(0.00)[dev-commits-src-all@freebsd.org]; FROM_NEQ_ENVFROM(0.00)[adrian@freebsd.org,adrianchadd@gmail.com]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_SOME(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[dev-commits-src-all@freebsd.org]; TAGGED_FROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; RCVD_IN_DNSWL_NONE(0.00)[209.85.160.173:from] X-Rspamd-Queue-Id: 4g4wKz24mhz3Ypb X-Spamd-Bar: - On Tue, 28 Apr 2026 at 14:54, Adrian Chadd wrote: > > On Tue, 28 Apr 2026 at 14:45, Adrian Chadd wrote: > > > > hi, > > > > This somehow breaks booting in pseries VMs in virtualised ppc64 on > > qemu, both ppc64be and ppc64le. > > The loader gets through a bunch of kernel loading and then hangs > > before it jumps into the kernel. > > > > I've committed some remote gdb sins to figure out where the CPU is in the loader > binary, and it looks like it's in load_elf.c : elf64_reloc_ptr . Nope, the problem is mine - it's actually not hanging, it's now just doing a /lot/ of work to relocate things before the system boots, so a fully virtualised ppc64 CPU takes ~ 40 seconds to run through the relocation list. Ouch. -adrian