[Bug 258432] Resume hangs unless copy_staging enable

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=258432

--- Comment #6 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=db2ba218d9fe6a541a4f537a641cce95f952fd98

commit db2ba218d9fe6a541a4f537a641cce95f952fd98
Author:     Konstantin Belousov <kib@FreeBSD.org>
AuthorDate: 2021-09-11 18:36:38 +0000
Commit:     Konstantin Belousov <kib@FreeBSD.org>
CommitDate: 2021-09-13 16:52:13 +0000

    amd64 acpi_wakeup: map 1:1 whole low 4G for the trampoline page table

    This is required since kernel text might be physically located
    anywhere below 4G.

    PR:     258432
    Reported by:    Taku YAMAMOTO <taku@tackymt.homeip.net>
    Reviewed by:    markj
    Sponsored by:   The FreeBSD Foundation
    MFC after:      1 week
    Differential revision:  https://reviews.freebsd.org/D31916

 sys/x86/acpica/acpi_wakeup.c | 77 +++++++++++++++++++++++++++-----------------
 1 file changed, 48 insertions(+), 29 deletions(-)

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