> -Original Message-
> From: Ankur Arora
> Sent: Monday, March 8, 2021 12:29 PM
> To: Bharat Bhushan
> Cc: alex.william...@redhat.com; linux-kernel@vger.kernel.org; Sunil Kovvuri
> Goutham ; termi...@gmail.com
> Subject: Re: [EXT] Re: vfio-pci: protect r
Hi Ankur,
> -Original Message-
> From: Ankur Arora
> Sent: Friday, February 26, 2021 6:24 AM
> To: Bharat Bhushan
> Cc: alex.william...@redhat.com; ankur.a.ar...@oracle.com; linux-
> ker...@vger.kernel.org; Sunil Kovvuri Goutham ;
> termi...@gmail.com
> Sub
Hi Ankur,
> -Original Message-
> From: Ankur Arora
> Sent: Wednesday, January 6, 2021 11:44 PM
> To: Bharat Bhushan ; alex.william...@redhat.com
> Cc: linux-kernel@vger.kernel.org; Sunil Kovvuri Goutham
>
> Subject: [EXT] Re: vfio-pci: protect remap_pfn_range() fr
> -Original Message-
> From: Ankur Arora
> Sent: Wednesday, January 6, 2021 11:44 PM
> To: Bharat Bhushan ; alex.william...@redhat.com
> Cc: linux-kernel@vger.kernel.org; Sunil Kovvuri Goutham
>
> Subject: [EXT] Re: vfio-pci: protect remap_pfn_range() fr
Hi Ankur,
We are observing below BUG_ON() with latest kernel
[10011.321645] [ cut here ]
[10011.322262] kernel BUG at mm/memory.c:1816!
[10011.323793] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[10011.326108] CPU: 2 PID: 1147 Comm: odp_l2fwd Not tainted
5
to use domain supported page sizes only.
Signed-off-by: Bharat Bhushan
---
v5->v6
- property length before dereference
- Error out on no supported page sizes (page-size-mask is zero)
- Allow device to attach to domain even it supports
minimum of domain supported page sizes. In that c
to use domain supported page sizes only.
Signed-off-by: Bharat Bhushan
---
v5->v6
- property length before dereference
- Error out on no supported page sizes (page-size-mask is zero)
- Allow device to attach to domain even it supports
minimum of domain supported page sizes. In that c
Hi Jean,
> -Original Message-
> From: Michael S. Tsirkin
> Sent: Wednesday, May 6, 2020 5:53 AM
> To: Bharat Bhushan
> Cc: jean-phili...@linaro.org; j...@8bytes.org; jasow...@redhat.com;
> virtualizat...@lists.linux-foundation.org; io...@lists.linux-foundation.o
> -Original Message-
> From: Michael S. Tsirkin
> Sent: Wednesday, May 6, 2020 5:53 AM
> To: Bharat Bhushan
> Cc: jean-phili...@linaro.org; j...@8bytes.org; jasow...@redhat.com;
> virtualizat...@lists.linux-foundation.org; io...@lists.linux-foundation.o
Different endpoint can support different page size, probe
endpoint if it supports specific page size otherwise use
global page sizes.
Signed-off-by: Bharat Bhushan
---
v4->v5:
- Rebase to Linux v5.7-rc4
v3->v4:
- Fix whitespace error
v2->v3:
- Fixed error return for incompatible
> -Original Message-
> From: Li Yang
> Sent: Tuesday, January 15, 2019 12:47 AM
> To: Bharat Bhushan
> Cc: Roy Pledge ; linux-kernel@vger.kernel.org;
> linuxppc-...@lists.ozlabs.org; linux-arm-ker...@lists.infradead.org;
> bharatb.ya...@gmail.com
> Subject: Re
cpu_possible(cpu) will always return true when cpu parameter
is from cpumask_next().
Check for nr_cpu_ids rather than !cpu_possible(cpu).
Signed-off-by: Bharat Bhushan
---
drivers/soc/fsl/dpio/dpio-driver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/soc/fsl/dpio
Hi Alex,
> -Original Message-
> From: Alex Williamson
> Sent: Friday, November 30, 2018 9:49 PM
> To: Bharat Bhushan
> Cc: Bjorn Helgaas ; Bjorn Helgaas
> ; linux-...@vger.kernel.org; Linux Kernel Mailing List
> ; bharatb.ya...@gmail.com; David Daney
> ; jgla
Hi Alex,
> -Original Message-
> From: Alex Williamson
> Sent: Friday, November 30, 2018 11:26 AM
> To: Bharat Bhushan
> Cc: Bjorn Helgaas ; Bjorn Helgaas
> ; linux-...@vger.kernel.org; Linux Kernel Mailing List
> ; bharatb.ya...@gmail.com; David Daney
> ; jgla
Hi,
> -Original Message-
> From: Bjorn Helgaas
> Sent: Thursday, November 29, 2018 1:46 AM
> To: Bharat Bhushan
> Cc: alex.william...@redhat.com; Bjorn Helgaas ; linux-
> p...@vger.kernel.org; Linux Kernel Mailing List ker...@vger.kernel.org>; bharatb.ya...@g
Hi,
> -Original Message-
> From: Alex Williamson
> Sent: Tuesday, November 27, 2018 9:39 PM
> To: Bjorn Helgaas
> Cc: Bharat Bhushan ; linux-...@vger.kernel.org;
> linux-kernel@vger.kernel.org; bharatb.ya...@gmail.com; David Daney
> ; Jan Glauber ; Maik
&g
NXP (Freescale Vendor ID) LS1088 chips do not behave correctly after
bus reset with e1000e. Link state of device does not comes UP and so
config space never accessible again.
Signed-off-by: Bharat Bhushan
---
drivers/pci/quirks.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a
> -Original Message-
> From: Scott Wood [mailto:o...@buserror.net]
> Sent: Wednesday, August 8, 2018 2:44 AM
> To: Bharat Bhushan ;
> b...@kernel.crashing.org; pau...@samba.org; m...@ellerman.id.au;
> ga...@kernel.crashing.org; mark.rutl...@arm.com;
> kstew...@lin
> -Original Message-
> From: Scott Wood [mailto:o...@buserror.net]
> Sent: Wednesday, August 8, 2018 2:34 AM
> To: Rob Herring ; Bharat Bhushan
>
> Cc: b...@kernel.crashing.org; pau...@samba.org; m...@ellerman.id.au;
> ga...@kernel.crashing.org; mark.rut
> -Original Message-
> From: Michael Ellerman [mailto:m...@ellerman.id.au]
> Sent: Wednesday, July 4, 2018 6:57 PM
> To: Bharat Bhushan ;
> b...@kernel.crashing.org; pau...@samba.org; r...@kernel.org;
> ge...@infradead.org; tyr...@linux.vnet.ibm.com; linuxppc-
>
>
> Signed-off-by: Laurentiu Tudor
Reviewed-by: Bharat Bhushan
Thanks
-Bharat
> ---
> drivers/irqchip/irq-ls-scfg-msi.c | 3 +++
> 1 file changed, 3 insertions(+)
>
> diff --git a/drivers/irqchip/irq-ls-scfg-msi.c
> b/drivers/irqchip/irq-ls-scfg-msi.c
> index 57e3d9
> h...@lst.de; gre...@linuxfoundation.org; j...@8bytes.org;
> m.szyprow...@samsung.com; shawn...@kernel.org; bhelg...@google.com;
> io...@lists.linux-foundation.org; linux-kernel@vger.kernel.org;
> devicet...@vger.kernel.org; linux-arm-ker...@lists.infradead.org; linuxppc-
> d...@lists.ozlabs.org;
-
> ker...@vger.kernel.org; io...@lists.linux-foundation.org; linux-
> wirel...@vger.kernel.org; linux-arm-...@vger.kernel.org; linux-
> s...@vger.kernel.org; dmaeng...@vger.kernel.org; dri-
> de...@lists.freedesktop.org; linux-te...@vger.kernel.org;
> devicet...@vger.kernel.org; linux-.
> -Original Message-
> From: Nipun Gupta [mailto:nipun.gu...@nxp.com]
> Sent: Monday, December 11, 2017 9:16 PM
> To: Laurentiu Tudor ; stuyo...@gmail.com;
> Bharat Bhushan ; gre...@linuxfoundation.org;
> cakt...@gmail.com; bretth...@gmail.com; a...@arndb.de
Hi Laurentiu,
> -Original Message-
> From: Laurentiu Tudor
> Sent: Wednesday, December 06, 2017 7:00 PM
> To: Nipun Gupta ; stuyo...@gmail.com; Bharat
> Bhushan ; gre...@linuxfoundation.org;
> cakt...@gmail.com; bretth...@gmail.com; a...@arndb.de
> Cc: linux-kerne
Hi Greg,
> -Original Message-
> From: gre...@linuxfoundation.org [mailto:gre...@linuxfoundation.org]
> Sent: Friday, November 24, 2017 9:29 PM
> To: Laurentiu Tudor
> Cc: Bharat Bhushan ; Ruxandra Ioana Radulescu
> ; de...@driverdev.osuosl.org;
> stuyo...@gmail.co
As per APIs each mc-portal is of 64K size while currently
16bits (type u16) is used to store size of mc-portal.
In these cases upper bit of portal size gets truncated.
Signed-off-by: Bharat Bhushan
---
v2->v3:
- v2 patch: https://patchwork.kernel.org/patch/10067661/
- Changes patch subject
tal_size from u16 to u32
Signed-off-by: Bharat Bhushan
---
drivers/staging/fsl-mc/include/mc-sys.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/fsl-mc/include/mc-sys.h
b/drivers/staging/fsl-mc/include/mc-sys.h
index dca7f90..11d4367 100644
--- a/driver
s mc_io->portal_size from uin16_t to uin32_t
Signed-off-by: Bharat Bhushan
---
drivers/staging/fsl-mc/include/mc-sys.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/staging/fsl-mc/include/mc-sys.h
b/drivers/staging/fsl-mc/include/mc-sys.h
index dca7f90..11d4367 100644
Hi Robin,
> -Original Message-
> From: linux-kernel-ow...@vger.kernel.org [mailto:linux-kernel-
> ow...@vger.kernel.org] On Behalf Of Bharat Bhushan
> Sent: Wednesday, September 06, 2017 12:47 PM
> To: Robin Murphy ; Marc Zyngier
> ; robh...@kernel.org; Mark Ru
Hi Robin,
> -Original Message-
> From: Robin Murphy [mailto:robin.mur...@arm.com]
> Sent: Friday, September 01, 2017 4:29 PM
> To: Bharat Bhushan ; Marc Zyngier
> ; robh...@kernel.org; Mark Rutland
> ; will.dea...@arm.com; o...@buserror.net; Gang
> Liu ; devicet...@v
> -Original Message-
> From: linux-kernel-ow...@vger.kernel.org [mailto:linux-kernel-
> ow...@vger.kernel.org] On Behalf Of Bharat Bhushan
> Sent: Thursday, August 31, 2017 4:53 PM
> To: Marc Zyngier ; robh...@kernel.org; Mark
> Rutland ; will.dea...@arm.com;
> o.
> -Original Message-
> From: Marc Zyngier [mailto:marc.zyng...@arm.com]
> Sent: Thursday, August 31, 2017 4:20 PM
> To: Bharat Bhushan ; robh...@kernel.org;
> Mark Rutland ; will.dea...@arm.com;
> o...@buserror.net; Gang Liu ;
> devicet...@vger.kern
> -Original Message-
> From: Marc Zyngier [mailto:marc.zyng...@arm.com]
> Sent: Thursday, August 31, 2017 3:02 PM
> To: Bharat Bhushan ; robh...@kernel.org;
> ark.rutl...@arm.com; will.dea...@arm.com; o...@buserror.net; Gang Liu
> ; devicet...@vger.kernel.org
This patch adds iommu-map property for PCIe, which enables
SMMU for these devices on LS208xA devices.
Signed-off-by: Bharat Bhushan
---
v1->v2
- Corrected "RM64" to "ARM64"
arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi | 4
1 file changed, 4 insertions(+)
diff
This patch adds iommu-map property for PCIe, which enables
SMMU for these devices on LS208xA devices.
Signed-off-by: Bharat Bhushan
---
arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi | 4
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi
b/arch
> -Original Message-
> From: Pratyush Anand [mailto:pan...@redhat.com]
> Sent: Monday, May 22, 2017 12:09 PM
> To: AKASHI Takahiro ; Dave Young
> ; Bharat Bhushan ;
> b...@redhat.com; vgo...@redhat.com; cor...@lwn.net;
> ke...@lists.infradead.org; linux-...@vger.ker
This patch have minor updates in Documentation for arm64i as
relocatable kernel.
Also this patch updates documentation for using uncompressed
image "Image" which is used for ARM64.
Signed-off-by: Bharat Bhushan
---
v1->v2
- "a uncompressed" replaced with "an uncompr
> -Original Message-
> From: Dave Young [mailto:dyo...@redhat.com]
> Sent: Thursday, May 18, 2017 11:29 AM
> To: Bharat Bhushan
> Cc: b...@redhat.com; vgo...@redhat.com; cor...@lwn.net;
> ke...@lists.infradead.org; linux-...@vger.kernel.org; linux-
> ker...@vger.ker
This patch have minor updates in Documentation for arm64i as
relocatable kernel.
Also this patch updates documentation for using uncompressed
image "Image" which is used for ARM64.
Signed-off-by: Bharat Bhushan
---
Documentation/kdump/kdump.txt | 10 --
1 file changed, 8
Hi Robin,
I faced same issue on our platform and debugged to get the root cause of the
issue. Also fixed in somewhat similar way, cleared iova_off and not change size
for if cookie->type is IOMMU_DMA_MSI_COOKIE. Anyways that was not as good as
below changes.
While just now I saw this was alre
> -Original Message-
> From: Lorenzo Pieralisi [mailto:lorenzo.pieral...@arm.com]
> Sent: Wednesday, May 03, 2017 9:29 PM
> To: Bharat Bhushan
> Cc: catalin.mari...@arm.com; will.dea...@arm.com;
> bhelg...@google.com; linux-arm-ker...@lists.infradead.org; linux-
> k
This patch allows user-space to mmap PCI resources. This
patch is inline to arm32 bit implementation.
Signed-off-by: Bharat Bhushan
---
arch/arm64/include/asm/pci.h | 4
arch/arm64/kernel/pci.c | 19 +++
2 files changed, 23 insertions(+)
diff --git a/arch/arm64
t.agra...@arm.com; Diana Madalina
> Craciun ; gpkulka...@gmail.com;
> shank...@codeaurora.org; Bharat Bhushan ;
> geethasowjanya.ak...@gmail.com
> Subject: [PATCH v8 00/18] KVM PCIe/MSI passthrough on ARM/ARM64 and
> IOVA reserved regions
>
> Following LPC discussions, we now r
> -Original Message-
> From: Marc Zyngier [mailto:marc.zyng...@arm.com]
> Sent: Friday, January 06, 2017 2:50 PM
> To: Auger Eric ; Bharat Bhushan
> ; eric.auger@gmail.com;
> christoffer.d...@linaro.org; robin.mur...@arm.com;
> alex.william...@redhat.com; w
t.agra...@arm.com; Diana Madalina
> Craciun ; gpkulka...@gmail.com;
> shank...@codeaurora.org; Bharat Bhushan ;
> geethasowjanya.ak...@gmail.com
> Subject: [PATCH v6 17/18] vfio/type1: Check MSI remapping at irq domain
> level
>
> In case the IOMMU translates MSI transa
mmu@lists.linux-
> foundation.org; pranav.sawargaon...@gmail.com; Bharat Bhushan
> ; shank...@codeaurora.org;
> gpkulka...@gmail.com
> Subject: Re: [PATCH v5 13/17] irqdomain: irq_domain_check_msi_remap
>
> Hi Marc,
>
> On 05/01/2017 12:57, Marc Zyngier wrote:
> > On 05/01/17 11:29
v.sawargaon...@gmail.com;
> io...@lists.linux-foundation.org; punit.agra...@arm.com; Diana Madalina
> Craciun ; gpkulka...@gmail.com;
> shank...@codeaurora.org; Bharat Bhushan
> Subject: [RFC v4 00/16] KVM PCIe/MSI passthrough on ARM/ARM64 and
> IOVA reserved regions
>
> Follow
> -Original Message-
> From: upstream-release-boun...@linux.freescale.net [mailto:upstream-
> release-boun...@linux.freescale.net] On Behalf Of Stuart Yoder
> Sent: Friday, December 16, 2016 10:01 PM
> To: gre...@linuxfoundation.org
> Cc: de...@driverdev.osuosl.org; ag...@suse.de; Ruxandr
Hi Eric,
I have tested this series on NXP platform.
Thanks
-Bharat
> -Original Message-
> From: iommu-boun...@lists.linux-foundation.org [mailto:iommu-
> boun...@lists.linux-foundation.org] On Behalf Of Eric Auger
> Sent: Tuesday, November 15, 2016 6:39 PM
> To: eric.au...@redhat.com; er
Hi Eric,
Have you sent out QEMU side patches based on this new approach? In case I
missed please point me the patches?
Thanks
-Bharat
> -Original Message-
> From: iommu-boun...@lists.linux-foundation.org [mailto:iommu-
> boun...@lists.linux-foundation.org] On Behalf Of Eric Auger
> Sen
: Bharat Bhushan
---
drivers/staging/fsl-mc/bus/dprc-driver.c | 3 +++
drivers/staging/fsl-mc/bus/mc-bus.c | 8
2 files changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/fsl-mc/bus/dprc-driver.c
b/drivers/staging/fsl-mc/bus/dprc-driver.c
index 7fc4717..14f9c82
com; linuxppc-
> d...@lists.ozlabs.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH 0/9 v2] vfio-pci: add support for Freescale IOMMU (PAMU)
>
> On Sun, 2013-11-24 at 23:33 -0600, Bharat Bhushan wrote:
> >
> > > -Original Message-
> > > From: Alex Williamson
com; linuxppc-
> d...@lists.ozlabs.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH 0/9 v2] vfio-pci: add support for Freescale IOMMU (PAMU)
>
> On Thu, 2013-11-28 at 03:19 -0600, Bharat Bhushan wrote:
> >
> > > -Original Message-
> > > From: Bhushan Bharat-R
o
>
> On Tue, Nov 19, 2013 at 10:47:05AM +0530, Bharat Bhushan wrote:
> > In Aperture type of IOMMU (like FSL PAMU), VFIO-iommu system need to
> > know the MSI region to map its window in h/w. This patch just defines
> > the required weak functions only and will be use
g
> > Subject: Re: [PATCH 0/9 v2] vfio-pci: add support for Freescale IOMMU
> > (PAMU)
> >
> > On Mon, 2013-11-25 at 05:33 +, Bharat Bhushan wrote:
> > >
> > > > -Original Message-
> > > > From: Alex Williamson [mailto:alex
ndation.org; bhelg...@google.com; linuxppc-
> d...@lists.ozlabs.org; linux-kernel@vger.kernel.org
> Subject: Re: [PATCH 0/9 v2] vfio-pci: add support for Freescale IOMMU (PAMU)
>
> On Mon, 2013-11-25 at 05:33 +, Bharat Bhushan wrote:
> >
> > > -Original Message-
>
liamson wrote:
> > > On Thu, 2013-11-21 at 11:20 +, Bharat Bhushan wrote:
> > > >
> > > > > -Original Message-
> > > > > From: Alex Williamson [mailto:alex.william...@redhat.com]
> > > > > Sent: Thursday, November 21,
1.c).
Signed-off-by: Bharat Bhushan
---
v1->v2
- Use lock around msi-dma list
- check for overlap between dma and msi-dma pages
- Some code cleanup as per various comments
drivers/vfio/Kconfig |6 +
drivers/vfio/Makefile |1 +
drivers/vfio/vfio_iommu_fsl_
In Aperture type of IOMMU (like FSL PAMU), VFIO-iommu system need to know
the MSI region to map its window in h/w. This patch just defines the
required weak functions only and will be used by followup patches.
Signed-off-by: Bharat Bhushan
---
v1->v2
- Added description on "struct ms
(Freescale PAMU) mapping for
devices which are directly assigned using VFIO.
Signed-off-by: Bharat Bhushan
---
v1->v2
- Atomic increment of bank index for parallel probe of msi node
arch/powerpc/sysdev/fsl_msi.c | 42 +++-
arch/powerpc/sysdev/fsl_ms
This patch extend the interface to arch specific code for setting
msi iova address for a msi page. Machine specific code is not yet
implemented.
Signed-off-by: Bharat Bhushan
---
v2
- new patch
arch/powerpc/include/asm/machdep.h |2 ++
arch/powerpc/kernel/msi.c | 10
Now we Keep track of devices which have msi page mapping to specific
iova page for all msi bank. When composing MSI address and data then
this list will be traversed. If device found in the list then use
configured iova page otherwise iova page will be taken as before.
Signed-off-by: Bharat
.
Signed-off-by: Bharat Bhushan
---
v1->v2
- removed un-necessary header file inclusion
- mark static function which are internal to *common.c
drivers/vfio/Makefile|4 +-
drivers/vfio/vfio_iommu_common.c | 227 ++
drivers/v
This patch defines an interface by which a msi page
can be mapped to a specific iova page.
This is a requirement in aperture type of IOMMUs (like Freescale PAMU),
where we map msi iova page just after guest memory iova address.
Signed-off-by: Bharat Bhushan
---
v2
- new patch
drivers/pci
So by now we have defined all the interfaces for getting the msi region,
this patch expose the interface to linux subsystem. These will be used by
vfio subsystem for setting up iommu for MSI interrupt of direct assignment
devices.
Signed-off-by: Bharat Bhushan
---
v1->v2
- None
include/li
This patch adds the interface to get the msi region information from arch
specific code. The machine spicific code is not yet defined.
Signed-off-by: Bharat Bhushan
---
v1->v2
- None
arch/powerpc/include/asm/machdep.h |8
arch/powerpc/kernel/msi.c |
From: Bharat Bhushan
PAMU (FSL IOMMU) has a concept of primary window and subwindows.
Primary window corresponds to the complete guest iova address space
(including MSI space), with respect to IOMMU_API this is termed as
geometry. IOVA Base of subwindow is determined from the number of
assigned to them.
> 2. moves a bus notifier to powernv code in order to avoid conflict with
> the notifier from Freescale driver.
>
> iommu_add_device() and iommu_del_device() are public now.
>
> Signed-off-by: Alexey Kardashevskiy
Tested-by: Bharat Bhushan
> ---
> Changes:
> -Original Message-
> From: Linuxppc-dev [mailto:linuxppc-dev-
> bounces+bharat.bhushan=freescale@lists.ozlabs.org] On Behalf Of Nicolin
> Chen
> Sent: Friday, November 08, 2013 4:20 PM
> To: vinod.k...@intel.com; dan.j.willi...@intel.com; s.ha...@pengutronix.de;
> ti...@tabi.org; s
This patch adds the interface to get the msi region information from arch
specific code. The machine spicific code is not yet defined.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/machdep.h |8
arch/powerpc/kernel/msi.c | 18 ++
2 files
on design. I will divide this in multiple logical
patches once this design is accepted.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/machdep.h |2 +
arch/powerpc/kernel/msi.c | 10 ++
arch/powerpc/sysdev/fsl_msi.c | 64
(Freescale PAMU) mapping for
devices which are directly assigned using VFIO.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/fsl_msi.c | 42 +++-
arch/powerpc/sysdev/fsl_msi.h | 11 -
2 files changed, 45 insertions(+), 8 deletions(-)
diff
From: Bharat Bhushan
PAMU (FSL IOMMU) has a concept of primary window and subwindows.
Primary window corresponds to the complete guest iova address space
(including MSI space), with respect to IOMMU_API this is termed as
geometry. IOVA Base of subwindow is determined from the number of
In Aperture type of IOMMU (like FSL PAMU), VFIO-iommu system need to know
the MSI region to map its window in h/w. This patch just defines the
required weak functions only and will be used by followup patches.
Signed-off-by: Bharat Bhushan
---
drivers/pci/msi.c | 22
So by now we have defined all the interfaces for getting the msi region,
this patch expose the interface to linux subsystem. These will be used by
vfio subsystem for setting up iommu for MSI interrupt of direct assignment
devices.
Signed-off-by: Bharat Bhushan
---
include/linux/pci.h | 13
From: Bharat Bhushan
This patchset adds support for vfio-pci with Freescale
IOMMU (PAMU- Peripheral Access Management Unit)
The Freescale PAMU is an aperture-based IOMMU with the following
characteristics. Each device has an entry in a table in memory
describing the iova->phys mapping.
From: Bharat Bhushan
returns the iommu_domain of the requested device for fsl pamu.
Use PCI controller dev struct for pci devices as current LIODN schema
assign LIODN to PCI controller not PCI device. This will be corrected
with proper LIODN schema.
Signed-off-by: Bharat Bhushan
---
drivers
Signed-off-by: Bharat Bhushan
---
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
ned-off-by: Bharat Bhushan
---
drivers/vfio/Kconfig |6 +
drivers/vfio/Makefile |1 +
drivers/vfio/vfio_iommu_fsl_pamu.c | 952
include/uapi/linux/vfio.h | 100
4 files changed, 1059 insertions(+), 0 deleti
If the device is attached with iommu domain then set MSI address
to the iova configured in PAMU.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/fsl_msi.c | 56 +++-
1 files changed, 54 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/sysdev
Some function defined in vfio_iommu_type1.c were common and
we want to use these for FSL IOMMU (PAMU) and iommu-none driver.
So some of them are moved to vfio_iommu_common.c
I think we can do more of that but we will take this step by step.
Signed-off-by: Bharat Bhushan
---
drivers/vfio
This api return the iommu domain to which the device is attached.
The iommu_domain is required for making API calls related to iommu.
Follow up patches which use this API to know iommu maping.
Signed-off-by: Bharat Bhushan
---
drivers/iommu/iommu.c | 10 ++
include/linux/iommu.h
create IOMMU (Freescale PAMU) mapping for
devices which are directly assigned using VFIO.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/machdep.h |8 +++
arch/powerpc/include/asm/pci.h |2 +
arch/powerpc/kernel/msi.c | 18
arch/powerpc/sysdev
This way we can use same data type struct with KVM and
also help in using other debug related function.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/processor.h | 38 +
arch/powerpc/include/asm/reg_booke.h |8 +-
arch/powerpc/kernel/asm-offsets.c|2 +-
arch
From: Bharat Bhushan
This patchset moves the debug registers in a structure, which allows
kvm to use same structure for debug emulation.
Note: Earilier a patchset
"https://lists.ozlabs.org/pipermail/linuxppc-dev/2013-June/108132.html";
was sent which is a bunch of six patches. That p
Signed-off-by: Bharat Bhushan
---
arch/powerpc/kernel/process.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index c517dbe..19b8733 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel
Signed-off-by: Bharat Bhushan
---
arch/powerpc/kernel/process.c |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index ceb4e7b..639a8de 100644
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel
For KVM also use the "struct debug_reg" defined in asm/processor.h
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/kvm_host.h | 13 +
arch/powerpc/kvm/booke.c| 34 --
2 files changed, 25 insertions(+), 22 deletion
"ehpriv" instruction is used for setting software breakpoints
by user space. This patch adds support to exit to user space
with "run->debug" have relevant information.
As this is the first point we are using run->debug, also defined
the run->debug structure.
eption, always exit to user space irrespective of
user space is expecting the debug exception or not. If this is
unexpected exception (breakpoint/watchpoint event not set by
userspace) then let us leave the action on user space. This
is similar to what it was before, only thing is that now we
have proper exi
KVM need this function when switching from vcpu to user-space
thread. My subsequent patch will use this function.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/switch_to.h |4
arch/powerpc/kernel/process.c|3 ++-
2 files changed, 6 insertions(+), 1 deletions
From: Bharat Bhushan
Note: These patches are based on http://github.com/agraf/linux-2.6.git queue
This patchset adds the userspace debug support for booke/bookehv.
this is tested on powerpc e500v2/e500mc devices.
We are now assuming that debug resource will not be used by kernel for
its own
This way we can use same data type struct with KVM and
also help in using other debug related function.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/processor.h | 38 +
arch/powerpc/include/asm/reg_booke.h |8 +-
arch/powerpc/kernel/asm-offsets.c|2 +-
arch
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