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...do speculation. So > either MIPS arch_sync_dma_for_cpu() should always flush or sgiseeq > needs to use a different sync funktion, when it wants to re-read descriptors > from memory. Well, if IP22 doesn't speculate (which I'm pretty sure is the case), dma_sync_single_for_cpu should indeeed be a no-op. But then there also shouldn't be anything in the cache, as the previous dma_sync_single_for_device should have invalidated it. So it seems like we are missing one (or more) ownership transfers to the device. I'll try to look at the the ownership management in a little more de...

On Tue, Sep 01, 2020 at 07:16:27PM +0200, Christoph Hellwig wrote: > Well, if IP22 doesn't speculate (which I'm pretty sure is the case), > dma_sync_single_for_cpu should indeeed be a no-op. But then there > also shouldn't be anything in the cache, as the previous > dma_sync_single_for_device should have invalidated it. So it seems like > we are missing one (or more) ownership transfers to the device. I'll > try to look at the the ownership management...

On Tue, Sep 01, 2020 at 07:38:10PM +0200, Thomas Bogendoerfer wrote: > On Tue, Sep 01, 2020 at 07:16:27PM +0200, Christoph Hellwig wrote: > > Well, if IP22 doesn't speculate (which I'm pretty sure is the case), > > dma_sync_single_for_cpu should indeeed be a no-op. But then there > > also shouldn't be anything in the cache, as the previous > > dma_sync_single_for_device should have invalidated it. So it seems like > > we are missing one (or more) ownership transfers to the device. I'll > > try to look at the the...

On Thu, 30 Oct 2014 19:02:01 +0100 Cornelia Huck <cornelia.huck at de.ibm.com> wrote: > On Tue, 28 Oct 2014 16:40:18 +0100 > Greg Kurz <gkurz at linux.vnet.ibm.com> wrote: > > > On Tue, 7 Oct 2014 16:40:01 +0200 > > Cornelia Huck <cornelia.huck at de.ibm.com> wrote: > > > > > Introduce a helper function to indicate whether a virtio device

On Thu, 30 Oct 2014 19:02:01 +0100 Cornelia Huck <cornelia.huck at de.ibm.com> wrote: > On Tue, 28 Oct 2014 16:40:18 +0100 > Greg Kurz <gkurz at linux.vnet.ibm.com> wrote: > > > On Tue, 7 Oct 2014 16:40:01 +0200 > > Cornelia Huck <cornelia.huck at de.ibm.com> wrote: > > > > > Introduce a helper function to indicate whether a virtio device

On Wed, Aug 19, 2020 at 08:55:49AM +0200, Christoph Hellwig wrote: > Use the proper modern API to transfer cache ownership for incoherent DMA. > > Signed-off-by: Christoph Hellwig <hch at lst.de> > --- > drivers/net/ethernet/seeq/sgiseeq.c | 12 ++++++++---- > 1 file changed, 8 insertions(+), 4 deletions(-) > > diff --git a/drivers/net/ethernet/seeq/sgiseeq.c

...weird), my desktop wallpaper doesn't travel to the new workstation... instead, I get a blank blue background, and a notepad document pops up that contains some "shell32.dll" command. However, if I look at my display properties, the right desktop wallpaper is highlighted. Very strange indeeed. Also, I'd like to be able to sync the workstation times to the server, since I understand out of sync workstation times may cause roaming profile problems. However, since a normal samba domain user isn't an Administrator, they don't have rights to change the time with "net time /...