[Bug 296348] efi: Panic in efidev_ioctl / efirt.c

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=296348

--- Comment #13 from Anton Saietskii <vsasjason@gmail.com> ---
(In reply to Mark Johnston from comment #11)

(kgdb) f 7
#7  0xffffffff809c9abe in pmap_map_io_transient (page=0xfffffe0182d8cae0,
page@entry=<unavailable>, vaddr=vaddr@entry=0xfffffe0182d8ca88,
count=count@entry=1, can_fault=true)
    at /usr/src/sys/amd64/amd64/pmap.c:10545
warning: Source file is more recent than executable.
10545                                   pmap_qenter(vaddr[i], &page[i], 1);
(kgdb) p/x *page
$1 = 0xfffffe00029a55d0
(kgdb)

> though that's optimized out
I have 'COPTFLAGS=-O2 -pipe' configured. Would you think it will help to change
optimization level to something else to get values?

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