| Message ID | 1379575763-2091-6-git-send-email-Bharat.Bhushan@freescale.com (mailing list archive) |
|---|---|
| State | New, archived |
| Delegated to: | Bjorn Helgaas |
| Headers | show |
On Thu, 2013-09-19 at 12:59 +0530, Bharat Bhushan wrote: > Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> > --- > drivers/vfio/pci/vfio_pci_rdwr.c | 3 ++- > 1 files changed, 2 insertions(+), 1 deletions(-) > > diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c > index 210db24..8a8156a 100644 > --- a/drivers/vfio/pci/vfio_pci_rdwr.c > +++ b/drivers/vfio/pci/vfio_pci_rdwr.c > @@ -181,7 +181,8 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, > size_t count, loff_t *ppos, bool iswrite) > { > int ret; > - loff_t off, pos = *ppos & VFIO_PCI_OFFSET_MASK; > + loff_t off; > + u64 pos = (u64 )(*ppos & VFIO_PCI_OFFSET_MASK); > void __iomem *iomem = NULL; > unsigned int rsrc; > bool is_ioport; What's the compile error that this fixes? -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
> -----Original Message----- > From: Alex Williamson [mailto:alex.williamson@redhat.com] > Sent: Wednesday, September 25, 2013 10:10 PM > To: Bhushan Bharat-R65777 > Cc: joro@8bytes.org; benh@kernel.crashing.org; galak@kernel.crashing.org; linux- > kernel@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; linux- > pci@vger.kernel.org; agraf@suse.de; Wood Scott-B07421; iommu@lists.linux- > foundation.org; Bhushan Bharat-R65777 > Subject: Re: [PATCH 5/7] iommu: supress loff_t compilation error on powerpc > > On Thu, 2013-09-19 at 12:59 +0530, Bharat Bhushan wrote: > > Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> > > --- > > drivers/vfio/pci/vfio_pci_rdwr.c | 3 ++- > > 1 files changed, 2 insertions(+), 1 deletions(-) > > > > diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c > > b/drivers/vfio/pci/vfio_pci_rdwr.c > > index 210db24..8a8156a 100644 > > --- a/drivers/vfio/pci/vfio_pci_rdwr.c > > +++ b/drivers/vfio/pci/vfio_pci_rdwr.c > > @@ -181,7 +181,8 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char > __user *buf, > > size_t count, loff_t *ppos, bool iswrite) { > > int ret; > > - loff_t off, pos = *ppos & VFIO_PCI_OFFSET_MASK; > > + loff_t off; > > + u64 pos = (u64 )(*ppos & VFIO_PCI_OFFSET_MASK); > > void __iomem *iomem = NULL; > > unsigned int rsrc; > > bool is_ioport; > > What's the compile error that this fixes? I was getting below error; and after some googling I came to know that this is how it is fixed by other guys. /home/r65777/linux-vfio/drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2' /home/r65777/linux-vfio/drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2' Thanks -Bharat >
On Wed, 2013-09-25 at 22:53 -0500, Bhushan Bharat-R65777 wrote: > > > -----Original Message----- > > From: Alex Williamson [mailto:alex.williamson@redhat.com] > > Sent: Wednesday, September 25, 2013 10:10 PM > > To: Bhushan Bharat-R65777 > > Cc: joro@8bytes.org; benh@kernel.crashing.org; galak@kernel.crashing.org; linux- > > kernel@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; linux- > > pci@vger.kernel.org; agraf@suse.de; Wood Scott-B07421; iommu@lists.linux- > > foundation.org; Bhushan Bharat-R65777 > > Subject: Re: [PATCH 5/7] iommu: supress loff_t compilation error on powerpc > > > > On Thu, 2013-09-19 at 12:59 +0530, Bharat Bhushan wrote: > > > Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> > > > --- > > > drivers/vfio/pci/vfio_pci_rdwr.c | 3 ++- > > > 1 files changed, 2 insertions(+), 1 deletions(-) > > > > > > diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c > > > b/drivers/vfio/pci/vfio_pci_rdwr.c > > > index 210db24..8a8156a 100644 > > > --- a/drivers/vfio/pci/vfio_pci_rdwr.c > > > +++ b/drivers/vfio/pci/vfio_pci_rdwr.c > > > @@ -181,7 +181,8 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char > > __user *buf, > > > size_t count, loff_t *ppos, bool iswrite) { > > > int ret; > > > - loff_t off, pos = *ppos & VFIO_PCI_OFFSET_MASK; > > > + loff_t off; > > > + u64 pos = (u64 )(*ppos & VFIO_PCI_OFFSET_MASK); > > > void __iomem *iomem = NULL; > > > unsigned int rsrc; > > > bool is_ioport; > > > > What's the compile error that this fixes? > > I was getting below error; and after some googling I came to know that this is how it is fixed by other guys. > > /home/r65777/linux-vfio/drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2' > /home/r65777/linux-vfio/drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2' It looks like PPC Linux implements __ucmpdi2, but not the signed version. That should be fixed, rather than hacking up random code to avoid it. -Scott -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/vfio/pci/vfio_pci_rdwr.c b/drivers/vfio/pci/vfio_pci_rdwr.c index 210db24..8a8156a 100644 --- a/drivers/vfio/pci/vfio_pci_rdwr.c +++ b/drivers/vfio/pci/vfio_pci_rdwr.c @@ -181,7 +181,8 @@ ssize_t vfio_pci_vga_rw(struct vfio_pci_device *vdev, char __user *buf, size_t count, loff_t *ppos, bool iswrite) { int ret; - loff_t off, pos = *ppos & VFIO_PCI_OFFSET_MASK; + loff_t off; + u64 pos = (u64 )(*ppos & VFIO_PCI_OFFSET_MASK); void __iomem *iomem = NULL; unsigned int rsrc; bool is_ioport;
Signed-off-by: Bharat Bhushan <bharat.bhushan@freescale.com> --- drivers/vfio/pci/vfio_pci_rdwr.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)