[Bug 209821] UEFI - installation media hangs when booting on ASUS P6P67 DELUXE

From: <bugzilla-noreply_at_freebsd.org>
Date: Sun, 09 Jan 2022 01:29:34 UTC

--- Comment #73 from commit-hook@FreeBSD.org ---
A commit in branch stable/12 references this bug:


commit f131d68e21fc360f5c8e63377f25cf60706d9afa
Author:     David Sebek <dasebek@gmail.com>
AuthorDate: 2022-01-07 20:18:49 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2022-01-09 01:28:01 +0000

    efi: loader: Inline copy_finish function in amd64 trampoline

    Instead of calling the efi_copy_finish function from amd64_tramp,
    include the copy instructions in the trampoline code itself.
    This avoids boot hangs and restarts in the cases when
    the efi_copy_finish code happens to be located at a memory
    location that is overwritten during the copy process.

    This is a direct commit to stable/12 since no-copy loader mode requires
    the kernel update not suitable for the branch.

    PR:     209821

 stand/efi/loader/arch/amd64/amd64_tramp.S   | 59 +++++++++++++++++++----------
 stand/efi/loader/arch/amd64/elf64_freebsd.c | 18 +++++----
 stand/efi/loader/copy.c                     |  8 ++++
 stand/efi/loader/loader_efi.h               |  1 +
 4 files changed, 60 insertions(+), 26 deletions(-)

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