linux-kernel - [PATCH v4 0/5] powerpc8xx: Further optimisation of TLB handling

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20150204144908.361E71A5F24@localhost.localdomain>
Date:	Wed,  4 Feb 2015 15:49:08 +0100 (CET)
From:	Christophe Leroy <christophe.leroy@....fr>
To:	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Michael Ellerman <mpe@...erman.id.au>, scottwood@...escale.com
CC:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	Joakim Tjernlund <joakim.tjernlund@...nsmode.se>
Subject: [PATCH v4 0/5] powerpc8xx: Further optimisation of TLB handling

This patchset provides a further optimisation of TLB handling in the 8xx.
Changes are:
- Not saving registers like CR when not needed
- Adding support to any TASK_SIZE

Patchset:
01 - powerpc/8xx: macro for handling CPU15 errata
02 - powerpc/8xx: Handle CR out of exception PROLOG/EPILOG
03 - powerpc/8xx: dont save CR in SCRATCH registers
04 - powerpc/8xx: Use SPRG2 instead of DAR for saving r3
05 - powerpc/8xx: Add support for TASK_SIZE greater than 0x80000000

All changes have been successfully tested on MPC885

Signed-off-by: Christophe Leroy <christophe.leroy@....fr>
Tested-by: Christophe Leroy <christophe.leroy@....fr>

---
v3: 01-06 no change ; 07-11 changed
v4: 01-06 removed (already in scootwood.git next) ; 07-11 renamed 01-05 and respined against scootwood.git next

 arch/powerpc/kernel/head_8xx.S | 79 +++++++++++++++++++++++++++---------------
 1 file changed, 51 insertions(+), 28 deletions(-)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/