[PATCH 2/8] ARM: Implement read/write for ownership in theARMv6 DMA cache ops
From: Ronen Shitrit <hidden>
Date: 2010-05-17 11:27:50
From: Ronen Shitrit <hidden>
Date: 2010-05-17 11:27:50
Performance wise we prefer to enable it... But it seems to be on the safe side we will disable it. Thanks -----Original Message----- From: Catalin Marinas [mailto:catalin.marinas at arm.com] Sent: Monday, May 17, 2010 2:08 PM To: Ronen Shitrit Cc: Russell King - ARM Linux; linux-arm-kernel at lists.infradead.org Subject: RE: [PATCH 2/8] ARM: Implement read/write for ownership in theARMv6 DMA cache ops
In case of Cortex-A9 (ARMv7), the TRM states clearly that it can do speculative loads into the L1 D-cache and this can be disabled via a bit in the auxiliary control register. Do you have a similar bit on your ARMv6 MP processor? [Ronen Shitrit] Yes.
So, use it :) -- Catalin