From: "Prakhya, Sai Praneeth" <sai.praneeth.prakhya@intel.com>
To: Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Ingo Molnar <mingo@kernel.org>
Cc: linux-efi <linux-efi@vger.kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Borislav Petkov <bp@alien8.de>, Andy Lutomirski <luto@kernel.org>,
"Hansen, Dave" <dave.hansen@intel.com>,
Bhupesh Sharma <bhsharma@redhat.com>,
"Peter Zijlstra" <peterz@infradead.org>,
Thomas Gleixner <tglx@linutronix.de>
Subject: RE: [PATCH] x86/efi: Don't unmap EFI boot services code/data regions for EFI_OLD_MEMMAP and EFI_MIXED_MODE
Date: Fri, 28 Dec 2018 21:27:55 +0000 [thread overview]
Message-ID: <FFF73D592F13FD46B8700F0A279B802F48608DD1@ORSMSX114.amr.corp.intel.com> (raw)
In-Reply-To: <CAKv+Gu8_9zMKhNyL=R7ZJHU=cFCkASVEOrm_4kqmTQG+7wPFbw@mail.gmail.com>
> > Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
> >
> > with the sidenote that I won't be able to test this myself until
> > monday at the earliest.
>
> OK, so I have tested both efi=old_map and mixed mode before and after
> applying this patch, using QEMU/KVM with 64-bit and 32-bit builds of OVMF
> [respectively]
>
> efi=old_map is indeed broken before and needs this patch.
>
> Mixed mode works just fine both before and after applying the patch, but I
> suggest we keep this patch as-is and address mixed mode later if needed (I
> spotted a couple of things in the boot log that may need some attention but I'm
> not sure if the issue is in Linux or in OVMF)
Thanks for testing this Ard.
For testing Mixed mode, I have used QEMU/KVM with 64-bit and 32-bit OVMF
and mixed mode is broken for me without this patch.
I am using an older OVMF build and probably that might be the reason for us seeing
different behaviors. Also, kernel config file might have some role to play.. I guess.
Regards,
Sai
next prev parent reply other threads:[~2018-12-28 21:27 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-22 2:22 [PATCH] x86/efi: Don't unmap EFI boot services code/data regions for EFI_OLD_MEMMAP and EFI_MIXED_MODE Sai Praneeth Prakhya
2018-12-22 10:54 ` Ingo Molnar
2018-12-22 11:04 ` Ard Biesheuvel
2018-12-24 9:38 ` Ard Biesheuvel
2018-12-28 21:27 ` Prakhya, Sai Praneeth [this message]
[not found] ` <FFF73D592F13FD46B8700F0A279B802F4860813C@ORSMSX114.amr.corp.intel.com>
2018-12-25 9:51 ` Ingo Molnar
2018-12-22 19:05 ` Prakhya, Sai Praneeth
2018-12-22 21:03 ` [tip:efi/core] " tip-bot for Sai Praneeth Prakhya
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=FFF73D592F13FD46B8700F0A279B802F48608DD1@ORSMSX114.amr.corp.intel.com \
--to=sai.praneeth.prakhya@intel.com \
--cc=ard.biesheuvel@linaro.org \
--cc=bhsharma@redhat.com \
--cc=bp@alien8.de \
--cc=dave.hansen@intel.com \
--cc=linux-efi@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mingo@kernel.org \
--cc=peterz@infradead.org \
--cc=tglx@linutronix.de \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.