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  1. 22 Sep, 2024 2 commits
    • David Howells's avatar
      9p: Enable multipage folios · 1325e4a9
      David Howells authored 
      Enable support for multipage folios on the 9P filesystem.  This is all
handled through netfslib and is already enabled on AFS and CIFS also.
Signed-off-by: default avatarDavid Howells <dhowells@redhat.com>
cc: Eric Van Hensbergen <ericvh@kernel.org>
cc: Latchesar Ionkov <lucho@ionkov.net>
cc: Dominique Martinet <asmadeus@codewreck.org>
cc: Christian Schoenebeck <linux_oss@crudebyte.com>
cc: Jeff Layton <jlayton@kernel.org>
cc: Matthew Wilcox <willy@infradead.org>
cc: v9fs@lists.linux.dev
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Message-ID: <20240620173137.610345-7-dhowells@redhat.com>
Signed-off-by: default avatarDominique Martinet <asmadeus@codewreck.org>
      1325e4a9
    • Dominique Martinet's avatar
      9p: v9fs_fid_find: also lookup by inode if not found dentry · 38d222b3
      Dominique Martinet authored 
      It's possible for v9fs_fid_find "find by dentry" branch to not turn up
anything despite having an entry set (because e.g. uid doesn't match),
in which case the calling code will generally make an extra lookup
to the server.

In this case we might have had better luck looking by inode, so fall
back to look up by inode if we have one and the lookup by dentry failed.

Message-Id: <20240523210024.1214386-1-asmadeus@codewreck.org>
Reviewed-by: default avatarChristian Schoenebeck <linux_oss@crudebyte.com>
Signed-off-by: default avatarDominique Martinet <asmadeus@codewreck.org>
      38d222b3
  3. 15 Sep, 2024 3 commits
    • Linus Torvalds's avatar
      Linux 6.11 · 98f7e32f
      Linus Torvalds authored
      98f7e32f
    • Linus Torvalds's avatar
      Merge tag 'for-linus-6.11' of git://git.kernel.org/pub/scm/virt/kvm/kvm · d42f7708
      Linus Torvalds authored 
      Pull kvm fix from Paolo Bonzini:
 "Do not always honor guest PAT on CPUs that support self-snoop.

  This triggers an issue in the bochsdrm driver, which used ioremap()
  instead of ioremap_wc() to map the video RAM.

  The revert lets video RAM use the WB memory type instead of the slower
  UC memory type"

* tag 'for-linus-6.11' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  Revert "KVM: VMX: Always honor guest PAT on CPUs that support self-snoop"
      d42f7708
    • Paolo Bonzini's avatar
      Revert "KVM: VMX: Always honor guest PAT on CPUs that support self-snoop" · 9d70f3fe
      Paolo Bonzini authored 
      This reverts commit 377b2f35.

This caused a regression with the bochsdrm driver, which used ioremap()
instead of ioremap_wc() to map the video RAM.  After the commit, the
WB memory type is used without the IGNORE_PAT, resulting in the slower
UC memory type.  In fact, UC is slow enough to basically cause guests
to not boot... but only on new processors such as Sapphire Rapids and
Cascade Lake.  Coffee Lake for example works properly, though that might
also be an effect of being on a larger, more NUMA system.

The driver has been fixed but that does not help older guests.  Until we
figure out whether Cascade Lake and newer processors are working as
intended, revert the commit.  Long term we might add a quirk, but the
details depend on whether the processors are working as intended: for
example if they are, the quirk might reference bochs-compatible devices,
e.g. in the name and documentation, so that userspace can disable the
quirk by default and only leave it enabled if such a device is being
exposed to the guest.

If instead this is actually a bug in CLX+, then the actions we need to
take are different and depend on the actual cause of the bug.
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
      9d70f3fe
  5. 14 Sep, 2024 4 commits
  7. 13 Sep, 2024 11 commits
  9. 12 Sep, 2024 20 commits
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