- Use a GB page for identity mapping only when memory of this size is

Browse source

requested so that mapping of reserved regions is prevented which would
   otherwise lead to system crashes on UV machines
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEzv7L6UO9uDPlPSfHEsHwGGHeVUoFAmXR304ACgkQEsHwGGHe
 VUq+lhAAugdnBJMBOX1MYAZELYt4hHhUZx2VHIoGzaKjEeNpgz6WZ5WWfBDMtFyh
 dO0ijZlIen/aXflNnZcHxgTdEE1rsSc0+7u7I5/RNJFRnI2aawhOFcy8aUHlk8mB
 5lwa5bFTdUEX5LS8yd38ZnrLVq6NBzHZ0CaCmahBOnqpN5HxgDutB65H2DJex2TW
 JEFTVcNEBKrLVaZZzDMhv0DalvnvMXUWxAyQwqmi+n4jTADvpzyJGFYIXQ6DJgSW
 MOd00NOC0haX6Mg78wRjTdcgxq9DVfLxrk8zE/uj99w5pm/vpxTeD/Lg5dElR99i
 1waTGUoWUMCWOKcPfjoZRCvYhgbfCPMivdcKb2yB/aKdTwFjFevAb2tYeXTd8nSm
 lRFRhdx5JrPIFzvETBnE3h/CCY5NL7T3UO/fOaJXZum1pHyJCUWMNbQWanbhT4Oz
 cRPKafRSxpfL1v33q9TXIfweCbX7XgzVytOBZ6HzinjmgzFNYD57GtbrI3zjW6qG
 nO3AgPFzb+ly7pQLEqpAxvJTDO52scAyyJH4WCIIMPaIlMZKTAWc8G3kUWqQIBmj
 88j/cMdp6rkLNqsxcbbcQVMjwU8j6Kz0Kw1nkFT969X9OVFXKRQAhIpdCsFMBYXY
 jjUojzbNW5bc6o96LQ5ZcGaZiO2Vn9dvHJScuHWz5Elpe3QH8oA=
 =B6od
 -----END PGP SIGNATURE-----

Merge tag 'x86_urgent_for_v6.8_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fix from Borislav Petkov:

 - Use a GB page for identity mapping only when memory of this size is
   requested so that mapping of reserved regions is prevented which
   would otherwise lead to system crashes on UV machines

* tag 'x86_urgent_for_v6.8_rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/mm/ident_map: Use gbpages only where full GB page should be mapped.

...

This commit is contained in:

Linus Torvalds 2024-02-18 09:22:48 -08:00

parent 7cb7c32d60 d794734c9b

commit ddac3d8b8a

1 changed files with 18 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

23

arch/x86/mm/ident_map.c

View file