lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Wed, 01 Feb 2012 11:58:44 -0700 From: Alex Williamson <alex.williamson@...hat.com> To: David Gibson <david@...son.dropbear.id.au> Cc: dwmw2@...radead.org, iommu@...ts.linux-foundation.org, aik@...abs.ru, benh@...nel.crashing.org, qemu-devel@...gnu.org, joerg.roedel@....com, kvm@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH 2/3] device_isolation: Support isolation on POWER p5ioc2 bridges On Wed, 2012-02-01 at 15:46 +1100, David Gibson wrote: > This patch adds code to the code for the powernv platform to create > and populate isolation groups on hardware using the p5ioc2 PCI host > bridge used on some IBM POWER systems. > > Signed-off-by: Alexey Kardashevskiy <aik@...abs.ru> > Signed-off-by: David Gibson <david@...son.dropbear.id.au> > --- > arch/powerpc/platforms/powernv/pci-p5ioc2.c | 14 +++++++++++++- > arch/powerpc/platforms/powernv/pci.h | 3 +++ > 2 files changed, 16 insertions(+), 1 deletions(-) > > diff --git a/arch/powerpc/platforms/powernv/pci-p5ioc2.c b/arch/powerpc/platforms/powernv/pci-p5ioc2.c > index 2649677..e5bb3a6 100644 > --- a/arch/powerpc/platforms/powernv/pci-p5ioc2.c > +++ b/arch/powerpc/platforms/powernv/pci-p5ioc2.c > @@ -20,6 +20,7 @@ > #include <linux/irq.h> > #include <linux/io.h> > #include <linux/msi.h> > +#include <linux/device_isolation.h> > > #include <asm/sections.h> > #include <asm/io.h> > @@ -88,10 +89,21 @@ static void pnv_pci_init_p5ioc2_msis(struct pnv_phb *phb) { } > static void __devinit pnv_pci_p5ioc2_dma_dev_setup(struct pnv_phb *phb, > struct pci_dev *pdev) > { > - if (phb->p5ioc2.iommu_table.it_map == NULL) > + if (phb->p5ioc2.iommu_table.it_map == NULL) { > iommu_init_table(&phb->p5ioc2.iommu_table, phb->hose->node); > +#ifdef CONFIG_DEVICE_ISOLATION > + phb->p5ioc2.di_group = kzalloc(sizeof(*(phb->p5ioc2.di_group)), > + GFP_KERNEL); > + BUG_ON(!phb->p5ioc2.di_group || > + (device_isolation_group_init(phb->p5ioc2.di_group, > + "p5ioc2:%llx", phb->opal_id) < 0)); > +#endif Hmm, it's really unfortunate that this is architected so we need to surround everything in #ifdefs even though we have stub functions defined. > + } > > set_iommu_table_base(&pdev->dev, &phb->p5ioc2.iommu_table); > +#ifdef CONFIG_DEVICE_ISOLATION > + device_isolation_dev_add(phb->p5ioc2.di_group, &pdev->dev); > +#endif > } > > static void __init pnv_pci_init_p5ioc2_phb(struct device_node *np, > diff --git a/arch/powerpc/platforms/powernv/pci.h b/arch/powerpc/platforms/powernv/pci.h > index 8bc4796..64ede1e 100644 > --- a/arch/powerpc/platforms/powernv/pci.h > +++ b/arch/powerpc/platforms/powernv/pci.h > @@ -87,6 +87,9 @@ struct pnv_phb { > union { > struct { > struct iommu_table iommu_table; > +#ifdef CONFIG_DEVICE_ISOLATION > + struct device_isolation_group *di_group; > +#endif > } p5ioc2; > > struct { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists