[PATCH v3 00/22] powerpc: Add KUAP support for BOOKE and 40x

[Michael Ellerman]

On Tue, 19 Oct 2021 09:29:11 +0200, Christophe Leroy wrote:
> On booke/40x we don't have segments like book3s/32.
> On booke/40x we don't have access protection groups like 8xx.
> 
> Use the PID register to provide user access protection.
> Kernel address space can be accessed with any PID.
> User address space has to be accessed with the PID of the user.
> User PID is always not null.
> 
> [...]

Applied to powerpc/next.

[01/22] Revert "powerpc: Inline setup_kup()"
        https://git.kernel.org/powerpc/c/6c1fa60d368e6b752e1612eae9bb0970e85392b2
[02/22] powerpc/8xx: Activate KUEP at all time
        https://git.kernel.org/powerpc/c/13dac4e31e75ce10b2fcaad4432a24dae6c955f6
[03/22] powerpc/44x: Activate KUEP at all time
        https://git.kernel.org/powerpc/c/ee2631603fdbab6f76e86ea87f7a03ebc3a1ef85
[04/22] powerpc/book3e: Activate KUEP at all time
        https://git.kernel.org/powerpc/c/dc3a0e5b83a8806d7da1f343a7d2e0be386d16d2
[05/22] powerpc/32s: Remove capability to disable KUEP at boottime
        https://git.kernel.org/powerpc/c/df415cd758261bceff27f34a145dd8328bbfb018
[06/22] powerpc/32s: Do kuep_lock() and kuep_unlock() in assembly
        https://git.kernel.org/powerpc/c/526d4a4c77aedf1b7df1133e5cced29c70232e6e
[07/22] powerpc/32s: Save content of sr0 to avoid 'mfsr'
        https://git.kernel.org/powerpc/c/70428da94c7ad692d306747a04117543827292a7
[08/22] powerpc/kuep: Remove 'nosmep' boot time parameter except for book3s/64
        https://git.kernel.org/powerpc/c/6754862249d324b11f1361a5353e234325d805ec
[09/22] powerpc/kuap: Add a generic intermediate layer
        https://git.kernel.org/powerpc/c/ba454f9c8e4efcc47c772b7642a5c8c6d1343cbf
[10/22] powerpc/kuap: Check KUAP activation in generic functions
        https://git.kernel.org/powerpc/c/c252f3846d3114542c606618995e3cbc11775357
[11/22] powerpc/kuap: Remove __kuap_assert_locked()
        https://git.kernel.org/powerpc/c/2341964e27b02b2ca1deef8a18df59d1db7b9085
[12/22] powerpc/kuap: Add kuap_lock()
        https://git.kernel.org/powerpc/c/937fb7003ee1f37faed1f1a4ece46e8a14863d92
[13/22] powerpc/nohash: Move setup_kuap out of 8xx.c
        https://git.kernel.org/powerpc/c/25ae981fafaa140a12e4c830992b4fe997071124
[14/22] powerpc/config: Add CONFIG_BOOKE_OR_40x
        https://git.kernel.org/powerpc/c/047a6fd40199eb55ffd18091f7ceae9743d972bf
[15/22] powerpc/kuap: Prepare for supporting KUAP on BOOK3E/64
        https://git.kernel.org/powerpc/c/42e03bc5240b75007682d9941ef672d12828fc70
[16/22] powerpc/kuap: Make PPC_KUAP_DEBUG depend on PPC_KUAP only
        https://git.kernel.org/powerpc/c/e3c02f25b4296c48376b8edb6aadcec460e803bc
[17/22] powerpc: Add KUAP support for BOOKE and 40x
        https://git.kernel.org/powerpc/c/43afcf8f0101279cf4243bb4f9f9b249ddd8613c
[18/22] powerpc/kuap: Wire-up KUAP on 44x
        https://git.kernel.org/powerpc/c/f6fad4fb55936f0d613cea08341d187d691d6440
[19/22] powerpc/kuap: Wire-up KUAP on 40x
        https://git.kernel.org/powerpc/c/fcf9bb6d32f8a268bc3daf3281e3beefabec4e7c
[20/22] powerpc/kuap: Wire-up KUAP on 85xx in 32 bits mode.
        https://git.kernel.org/powerpc/c/4f6a025201a290316b28a2a0ef9950398bd75088
[21/22] powerpc/kuap: Wire-up KUAP on book3e/64
        https://git.kernel.org/powerpc/c/57bc963837f5f1753a1d51fada54a32b8a84fdc3
[22/22] powerpc: Remove CONFIG_PPC_HAVE_KUAP and CONFIG_PPC_HAVE_KUEP
        https://git.kernel.org/powerpc/c/dede19be5163cdc5b5d65a2ce7e7f6eedcb666ff

cheers