Domain faults when CONFIG_CPU_SW_DOMAIN_PAN is enabled
From: Russell King - ARM Linux <hidden>
Date: 2015-12-03 11:51:50
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- 2015-12-03 · Domain faults when CONFIG_CPU_SW_DOMAIN_PAN is enabled · Peter Rosin <hidden>
On Thu, Dec 03, 2015 at 11:38:20AM +0000, Peter Rosin wrote:
Russell King wrote:quoted
On Thu, Dec 03, 2015 at 08:33:13AM +0000, Peter Rosin wrote:quoted
I wrote:quoted
If I enable CONFIG_CPU_SW_DOMAIN_PAN, I sometimes (but not always) get the following (or very similar) on boot.I should have said "if I don't disable", as the option is "default y". Also, if it survives on boot, below is an example of later trouble (after 30+ minutes on this occasion).Please apply this patch so we (might) get a slightly better oops dump, and then try to reproduce.Sure thing, but it's still "DAC: 00000051"...
Thanks, that confirms that something in the uaccess-with-memcpy code is clearing the DACR back to 0x51. This has come up several times before, and I really can't spot the problem in this code, so I've always said to disable the uaccess-with-memcpy code. Personally, I'd like to see the back of that code... -- FTTC broadband for 0.8mile line: currently at 9.6Mbps down 400kbps up according to speedtest.net.