Re: git: kernel - Fix some rare pmap races in i386 and x86_64.
Matthew Dillon wrote:
[...]
> * Interlock the pmap structure when invalidating pages using a bit
> in the pm_active field.
>
> Check for the interlock in swtch.s when switching into threads
> and print a nice warning if it occurs.
+ if (pmap->pm_active & CPUMASK_LOCK) {
+ kprintf("Warning: pmap_interlock %08x\n", pmap->pm_active);
Err, this warning is totally meaningless to an administrator or pretty
much anybody who didn't read this patch. Wouldn't something like
kprintf("Diagnostic: pmap_interlock %08x. Please report this!\n",
pmap->pm_active)
or even
kprintf("Wow. pmap_interlock %08x. Please report this!\n", pmap->pm_active)
be more useful to both sides?
Aggelos
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