Re: [PATCH 2/3 v2] powerpc/mpic: Use the MPIC_LARGE_VECTORS flag for FSL MPIC.
On Jul 9, 2012, at 3:46 AM, Varun Sethi wrote: > We should use the MPIC_LARG_VECTORS flag while intializing the MPIC. > This prevents us from eating in to hardware vector number space (MSIs) > while setting up internal sources. > > Signed-off-by: Varun Sethi > --- > arch/powerpc/sysdev/mpic.c |2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) applied to next - k ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
RE: [PATCH 2/3 v2] powerpc/mpic: Use the MPIC_LARGE_VECTORS flag for FSL MPIC.
> -Original Message- > From: Kumar Gala [mailto:ga...@kernel.crashing.org] > Sent: Monday, July 09, 2012 7:58 PM > To: Sethi Varun-B16395 > Cc: linuxppc-dev@lists.ozlabs.org > Subject: Re: [PATCH 2/3 v2] powerpc/mpic: Use the MPIC_LARGE_VECTORS flag > for FSL MPIC. > > > On Jul 9, 2012, at 3:46 AM, Varun Sethi wrote: > > > We should use the MPIC_LARG_VECTORS flag while intializing the MPIC. > > This prevents us from eating in to hardware vector number space (MSIs) > > while setting up internal sources. > > > > Signed-off-by: Varun Sethi > > --- > > arch/powerpc/sysdev/mpic.c |2 +- > > 1 files changed, 1 insertions(+), 1 deletions(-) > > Can you remind me the issue here w/running into the MSIs? Vector numbers for internal interrupt sources like timers/ipis are taken from the hardware vector number space. Currently we specify number of interrupt sources as 256 and extract 12 vectors from here for internal interrupt sources. In process we end up eating vector numbers meant for MSIs. With this patch we are basically expanding our vector number space. -Varun ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: [PATCH 2/3 v2] powerpc/mpic: Use the MPIC_LARGE_VECTORS flag for FSL MPIC.
On Jul 9, 2012, at 3:46 AM, Varun Sethi wrote: > We should use the MPIC_LARG_VECTORS flag while intializing the MPIC. > This prevents us from eating in to hardware vector number space (MSIs) > while setting up internal sources. > > Signed-off-by: Varun Sethi > --- > arch/powerpc/sysdev/mpic.c |2 +- > 1 files changed, 1 insertions(+), 1 deletions(-) Can you remind me the issue here w/running into the MSIs? - k ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
