Re: [PATCH 13/21] MSI: Do MSI masking in the arch code

Michael Ellerman <[EMAIL PROTECTED]> writes: > > The main motivation was to have the arch in control of as much direct > register writing as possible. Even though our HV does allow us to write > to config space, it's not obviously safe for Linux to be flipping bits > and also calling the HV to con

Re: [PATCH 13/21] MSI: Do MSI masking in the arch code

On Wed, 2007-03-28 at 00:39 -0600, Eric W. Biederman wrote: > Michael Ellerman <[EMAIL PROTECTED]> writes: > > > It's an arch detail whether MSI irqs need to be masked using the PCI > > MSI registers. > > Agreed. It isn't an arch detail that they need to be unmasked in > the pci configuration sp

Re: [PATCH 13/21] MSI: Do MSI masking in the arch code

Michael Ellerman <[EMAIL PROTECTED]> writes: > It's an arch detail whether MSI irqs need to be masked using the PCI > MSI registers. Agreed. It isn't an arch detail that they need to be unmasked in the pci configuration space. I assume this patch is motivated just to make arch support easier an