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powerpc: Dynamically calculate the dabrx based on kernel/user/hypervisor

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Currently we mark the DABRX to interrupt on all matches
(hypervisor/kernel/user and then filter in software.  We can be a lot
smarter now that we can set the DABRX dynamically.

This sets the DABRX based on the flags passed by the user.

Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
This commit is contained in:
Michael Neuling
2012-09-06 21:24:57 +00:00
committed by Benjamin Herrenschmidt
parent 4474ef055c
commit cd14457304
3 changed files with 13 additions and 5 deletions
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2
arch/powerpc/platforms/pseries/setup.c
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@@ -425,7 +425,7 @@ static int pseries_set_xdabr(unsigned long dabr, unsigned long dabrx)
if (dabrx == 0 && dabr == 0)
dabrx = DABRX_USER;
/* PAPR says we can only set kernel and user bits */
dabrx &= H_DABRX_KERNEL | H_DABRX_USER;
dabrx &= DABRX_KERNEL | DABRX_USER;
return plpar_hcall_norets(H_SET_XDABR, dabr, dabrx);
}