From: Mike Rapoport <rppt@linux.ibm.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Miller <davem@davemloft.net>, Linux-MM <linux-mm@kvack.org>,
kernel test robot <lkp@intel.com>,
Anatoly Pugachev <matorola@gmail.com>,
mm-commits@vger.kernel.org, stable <stable@vger.kernel.org>
Subject: Re: [patch 09/11] sparc32: use PUD rather than PGD to get PMD in srmmu_nocache_init()
Date: Sat, 23 May 2020 22:57:15 +0300 [thread overview]
Message-ID: <20200523195715.GY1059226@linux.ibm.com> (raw)
In-Reply-To: <CAHk-=wisORTa7QVPnFqNw9pFs62UiwgsD4C4d=MtYy1o4JPyGQ@mail.gmail.com>
On Sat, May 23, 2020 at 12:10:27PM -0700, Linus Torvalds wrote:
> On Sat, May 23, 2020 at 12:02 PM Mike Rapoport <rppt@linux.ibm.com> wrote:
> >
> > Unfortunately, this fixes a compile warning but breaks the boot :(
>
> Argh. I delayed applying/merging this overnight to see if there were
> any reports, but this came in after I'd already merged Andrew's
> patches and pushed them out.
Actually, it's really by chance I noticed it tonight, although still it
was too late :)
> So it's in my tree now as commit c2bc26f7ca1f ("sparc32: use PUD
> rather than PGD to get PMD in srmmu_nocache_init()")
>
> > The correcteted patch is below, boot tested with qemu-systems-sparc.
>
> Mind sending a patch relative to the previous one that already got merged?
Sure.
> Also, would it perhaps be worth it to just make __nocache_fix() not
> throw the type away? IOW, make it do something like
>
> #define __nocache_fix(VADDR) \
> ((__typeof__(VADDR))__va(__nocache_pa(VADDR)))
>
> or whatever? Wouldn't that show when those pgd/p4d/pud pointers get
> mis-used because they don't end up dropping the type info..
Yes, I'll look into it.
> Linus
--
Sincerely yours,
Mike.
next prev parent reply other threads:[~2020-05-23 19:57 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200522222217.ee14ad7eda7aab1e6697da6c@linux-foundation.org>
2020-05-23 5:22 ` [patch 01/11] device-dax: don't leak kernel memory to user space after unloading kmem Andrew Morton
2020-05-23 5:22 ` [patch 03/11] rapidio: fix an error in get_user_pages_fast() error handling Andrew Morton
2020-05-23 5:22 ` [patch 06/11] kasan: disable branch tracing for core runtime Andrew Morton
2020-05-23 5:23 ` [patch 07/11] sh: include linux/time_types.h for sockios Andrew Morton
2020-05-23 5:23 ` [patch 09/11] sparc32: use PUD rather than PGD to get PMD in srmmu_nocache_init() Andrew Morton
2020-05-23 19:01 ` Mike Rapoport
2020-05-23 19:10 ` Linus Torvalds
2020-05-23 19:57 ` Mike Rapoport [this message]
2020-05-23 5:23 ` [patch 10/11] z3fold: fix use-after-free when freeing handles Andrew Morton
2020-05-25 0:08 ` + mmthp-stop-leaking-unreleased-file-pages.patch added to -mm tree Andrew Morton
2020-05-25 0:49 ` + mm-remove-vm_bug_onpageslab-from-page_mapcount.patch " Andrew Morton
2020-05-28 0:10 ` + relay-handle-alloc_percpu-returning-null-in-relay_open.patch " Andrew Morton
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=20200523195715.GY1059226@linux.ibm.com \
--to=rppt@linux.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=davem@davemloft.net \
--cc=linux-mm@kvack.org \
--cc=lkp@intel.com \
--cc=matorola@gmail.com \
--cc=mm-commits@vger.kernel.org \
--cc=stable@vger.kernel.org \
--cc=torvalds@linux-foundation.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).