Re: [PATCH] TX49 MFC0 bug workaround

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Hello.

Atsushi Nemoto wrote:
On Fri, 03 Feb 2006 05:12:47 +0300, Sergei Shtylylov <sshtylyov@xxxxxxxxxxxxx> said:

sshtylyov>     If I don't mistake, the offending code is in
sshtylyov> local_irq_disable, local_irq_save, and local_irq_restore
sshtylyov> macros. The effect would be a crash on any exception taken
sshtylyov> once interrupts get disabled in a module (*and* that code
sshtylyov> happens to fall on a page boundary)... nasty. :-(

... and yet worse: any external interrupts actually blocked from CPU forever by Status.EXL set (which then will never be cleared after the errata triggers).

Right.  And it can really happen.

---
Atsushi Nemoto

WBR, Sergei


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