> -Original Message-
> From: Li Yang
> Sent: Tuesday, January 15, 2019 12:47 AM
> To: Bharat Bhushan
> Cc: Roy Pledge ; linux-ker...@vger.kernel.org;
> linuxppc-dev@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
> -Original Message-
> From: Scott Wood [mailto:o...@buserror.net]
> Sent: Thursday, August 9, 2018 11:42 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 11:27 PM
> 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 11:26 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 11:21 AM
> To: Bharat Bhushan ; Rob Herring
>
> Cc: b...@kernel.crashing.org; pau...@samba.org; m...@ellerman.id.au;
> ga...@kernel.crashing.org; mark.rut
> -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
e as platform
is given precedence over device-tree, while I think device-tree
should have precedence.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/boot/dts/fsl/p2020si-post.dtsi | 3 +++
arch/powerpc/platforms/85xx/mpc85xx_rdb.c | 5 +
2 files changed, 8 insertions(+)
diff --git a/arc
As mpic can have non-contiguous source of interrupt range,
print same during boot.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/mpic.c | 18 --
1 file changed, 16 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index
rted-irq-ranges" property in device tree to
provide the range of supported source of interrupts. If a reserved
interrupt used then it will not be programming h/w, which it does
currently, and through warning.
Signed-off-by: Bharat Bhushan
---
.../devicetree/bindings/powerpc/fsl/mpic.txt |
re same as before.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/mpic.c | 31 +++
1 file changed, 19 insertions(+), 12 deletions(-)
diff --git a/arch/powerpc/sysdev/mpic.c b/arch/powerpc/sysdev/mpic.c
index b6803bc..d503887 100644
--- a/arch/powerpc/sysdev/mpic.c
This function just moves the last-irq calculation
logic to a function, while no change in logic.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/mpic.c | 52 +-
1 file changed, 33 insertions(+), 19 deletions(-)
diff --git a/arch/powerpc/sysdev
s this for P2020RDB-PC for now.
Bharat Bhushan (5):
powerpc/mpic: move last irq logic to function
powerpc/mpic: Rework last source irq calculation logic
powerpc/mpic: Add support for non-contiguous irq ranges
powerpc/mpic: Boot print supported interrupt ranges
powerpc/fsl: Add supported-irq-
E200 have TLB1 only and it does not have TLB0.
So TLB1 are used for mapping kernel and user-space both.
TLB miss handler for E200 does not consider skipping TLBs
used for kernel mapping. This patch ensures that we skip
tlb1 entries used for kernel mapping (tlbcam_index).
Signed-off-by: Bharat
> -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-
>
Available vector space accounts ipis and timer interrupts
while spurious vector was not accounted. Also later
mpic_setup_error_int() escape one more vector, seemingly it
assumes one spurious vector.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/fsl_mpic_err.c | 2 +-
arch/powerpc/sysdev
Hi Diana,
> -Original Message-
> From: Diana Craciun [mailto:diana.crac...@nxp.com]
> Sent: Monday, June 11, 2018 6:23 PM
> To: linuxppc-dev@lists.ozlabs.org
> Cc: m...@ellerman.id.au; o...@buserror.net; Leo Li ;
> Bharat Bhushan ; Diana Madalina Craciun
>
>
> 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-ker...@vger.kernel.org;
> devicet...@vger.kernel.org; linux-arm-ker...@lists.infradead.org; linuxppc-
> d...@lists.ozlabs.org;
to a Guest. Patches for same will follow this patch.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/include/asm/device.h | 2 +
arch/powerpc/include/asm/fsl_msi.h | 26 ++
arch/powerpc/sysdev/fsl_msi.c | 169 +++--
arch/powerpc/sysdev/fsl_msi.h
oth kernel owned PCI devices and
direct assigned devices using VFIO to guest.
Bharat Bhushan (4):
fsl/msi: have msiir register address absolute rather than offset
fsl/msi: Move fsl,msi mode specific MSI device search out of main loop
fsl/msi: Add MSI bank allocation for kernel owned devices
fs
Having absolute address simplifies the code and also removes the
confusion around feature->msiir_offset and msi_data->msiir_offset.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/fsl_msi.c | 9 +++--
arch/powerpc/sysdev/fsl_msi.h | 2 +-
2 files changed, 4 insertions(+), 7 del
Moving out the specific MSI device search out of main loop. And now
the specific msi device search is placed with other "fsl.msi" specific
code in same function.
This is in preparation to MSI bank partitioning.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/fsl_
ay all MSI capable devices are assigned
to VM/userspace then there is no need to have any MSI bank reserved
for kernel context.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/sysdev/fsl_msi.c | 88 ++-
arch/powerpc/sysdev/fsl_msi.h | 4 ++
2 files changed, 8
)
|wimg = (*ptep >> PTE_WIMGE_SHIFT) & MAS2_WIMGE_MASK;
| ^
| arch/powerpc/kvm/e500_mmu_host.c:631:20: note: each undeclared identifier is
reported only once for each function it appears in
| make[1]: *** [arch/powerpc/kvm/e500_mmu_host.o] Error 1
Signed-off-by: Bharat Bhushan
It's possible to have RTC irq shared with other device (e.g.
t4240qds board shares ds3232irq with phy one). Handle this in
driver.
Signed-off-by: Bharat Bhushan
---
drivers/rtc/rtc-ds3232.c |4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/rtc/rtc-ds323
com; linuxppc-
> d...@lists.ozlabs.org; linux-ker...@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-ker...@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
Scott-B07421; Ben
> Herrenschmidt
> Subject: Re: Error in frreing hugepages with preemption enabled
>
> Hi everyone,
>
> On Fri, Nov 29, 2013 at 12:13:03PM +0100, Alexander Graf wrote:
> >
> > On 29.11.2013, at 05:38, Bharat Bhushan
> > wrote:
> >
> > >
Hi Alex,
I am running KVM guest with host kernel having CONFIG_PREEMPT enabled. With
allocated pages things seems to work fine but I uses hugepages for guest I see
below prints when "quit" from qemu.
(qemu) QEMU waiting for connection on: telnet:0.0.0.0:,server
qemu-system-ppc64: pci_add_op
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-ker...@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,
nux-foundation.org; linux-
> p...@vger.kernel.org; linuxppc-dev@lists.ozlabs.org; linux-
> ker...@vger.kernel.org; Bhushan Bharat-R65777
> Subject: Re: [PATCH 0/9 v2] vfio-pci: add support for Freescale IOMMU (PAMU)
>
> On Tue, 2013-11-19 at 10:47 +0530, Bharat Bhushan wrote:
>
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_
.
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 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
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
(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 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 |
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
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
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:
> > Those codes just for discuss with Bharat. He want to make one flow at
> > "show_pw20_wait_time"/" show_altivec_idle_wait_time" function. If we
> > do that, we need to initialize pw20_wt/altivec_idle_wt.
> >
> I will keep this stuff at "show_pw20_wait_time"/"show_altivec_idle_wait_time"
> and ad
> -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
> -Original Message-
> From: Wang Dongsheng-B40534
> Sent: Tuesday, November 05, 2013 8:40 AM
> To: Wood Scott-B07421
> Cc: Bhushan Bharat-R65777; linuxppc-dev@lists.ozlabs.org
> Subject: RE: [PATCH v5 4/4] powerpc/85xx: add sysfs for pw20 state and altivec
> idle
>
>
>
> > -Origin
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
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
(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
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
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
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
This was missing on powerpc and I am getting compilation error
drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2'
drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2'
Signed-off-by: Bharat Bhushan
---
arch/powerpc/kernel/misc_32.
This was missing on powerpc and I am getting compilation error
drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2'
drivers/vfio/pci/vfio_pci_rdwr.c:193: undefined reference to `__cmpdi2'
Signed-off-by: Bharat Bhushan
---
arch/powerpc/kernel/misc_32.
we do both
- Clear "flags" when invalidating;
- Clear "flags" when reusing same entry later
Signed-off-by: Bharat Bhushan
---
v6->7
- Comment re-phrased
v5->v6
- Reordered the flag clearing steps as per comment on v5
v4->v5
- New change
arch/powerpc/
we do both
- Clear "flags" when invalidating;
- Clear "flags" when reusing same entry later
Signed-off-by: Bharat Bhushan
---
v5->v6
- Fix flag clearing comment
arch/powerpc/kvm/e500_mmu_host.c | 16
1 files changed, 8 insertions(+), 8 d
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
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
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
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
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
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
KVM uses same WIM tlb attributes as the corresponding qemu pte.
For this we now search the linux pte for the requested page and
get these cache caching/coherency attributes from pte.
Signed-off-by: Bharat Bhushan
---
v4->v5
- No change
arch/powerpc/include/asm/kvm_host.h |2 +-
a
-by: Bharat Bhushan
---
v4->v5
- No change
arch/powerpc/include/asm/pgtable.h | 24 +++
arch/powerpc/kvm/book3s_hv_rm_mmu.c | 36 +++---
2 files changed, 36 insertions(+), 24 deletions(-)
diff --git a/arch/powerpc/include/asm/pgtable.h
b/a
we do both
- Clear "flags" when invalidating;
- Clear "flags" when reusing same entry later
Signed-off-by: Bharat Bhushan
---
v3-> v5
- New patch (found this issue when doing vfio-pci development)
arch/powerpc/kvm/e500_mmu_host.c | 12 +++-
1 files c
"E" bit in MAS2 bit indicates whether the page is accessed
in Little-Endian or Big-Endian byte order.
There is no reason to stop guest setting "E", so allow him."
Signed-off-by: Bharat Bhushan
---
v1->v5
- no change
arch/powerpc/kvm/e500.h |2 +-
1 files
"G" bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting "G", so allow him.
Signed-off-by: Bharat Bhushan
---
v1->v5
- no change
arch/powerpc/kvm/e500.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/ar
For booke3e _PAGE_ENDIAN is not defined. Infact what is defined
is "_PAGE_LENDIAN" which is wrong and that should be _PAGE_ENDIAN.
There are no compilation errors as
arch/powerpc/include/asm/pte-common.h defines _PAGE_ENDIAN to 0
as it is not defined anywhere.
Signed-off-by: Bhar
From: Bharat Bhushan
First patch is a typo fix where book3e define _PAGE_LENDIAN while it
should be defined as _PAGE_ENDIAN. This seems to show that this is never
exercised :-)
Second and third patch is to allow guest controlling "G"-Guarded and "E"-Endian
TLB attributes r
KVM uses same WIM tlb attributes as the corresponding qemu pte.
For this we now search the linux pte for the requested page and
get these cache caching/coherency attributes from pte.
Signed-off-by: Bharat Bhushan
---
v3->v4
- s/printk/printk_ratelimited till we return machine check in mmu se
-by: Bharat Bhushan
---
v2->v3
- New change
arch/powerpc/include/asm/pgtable.h | 23 +
arch/powerpc/kvm/book3s_hv_rm_mmu.c | 38 +++---
2 files changed, 35 insertions(+), 26 deletions(-)
diff --git a/arch/powerpc/include/asm/pgtable.h
b/a
KVM uses same WIM tlb attributes as the corresponding qemu pte.
For this we now search the linux pte for the requested page and
get these cache caching/coherency attributes from pte.
Signed-off-by: Bharat Bhushan
---
v2->v3
- setting pgdir before kvmppc_fix_ee_before_entry() on vcpu_
Linux pte search functions find_linux_pte_or_hugepte() and
find_linux_pte() have nothing specific to 64bit anymore.
So they are move from pgtable-ppc64.h to asm/pgtable.h
Signed-off-by: Bharat Bhushan
---
v2->v3
- no change
v1->v2
- This is a new change in this version
arch/powerpc/i
"G" bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting "G", so allow him.
Signed-off-by: Bharat Bhushan
---
v2->v3
- no change
v1->v2
- no change
arch/powerpc/kvm/e500.h |2 +-
1 files changed, 1 insertions(+), 1 delet
From: Bharat Bhushan
First patch is a typo fix where book3e define _PAGE_LENDIAN while it should be
defined as _PAGE_ENDIAN. This seems to show that this is never exercised :-)
Second and third patch is to allow guest controlling "G"-Guarded and
"E"-Endian TLB attributes r
For booke3e _PAGE_ENDIAN is not defined. Infact what is defined
is "_PAGE_LENDIAN" which is wrong and should be _PAGE_ENDIAN.
There are no compilation errors as
arch/powerpc/include/asm/pte-common.h defines _PAGE_ENDIAN to 0
as it is not defined anywhere.
Signed-off-by: Bharat Bhushan
"E" bit in MAS2 bit indicates whether the page is accessed
in Little-Endian or Big-Endian byte order.
There is no reason to stop guest setting "E", so allow him."
Signed-off-by: Bharat Bhushan
---
v2->v3
- no change
v1->v2
- no change
arch/powerpc/kvm/e500.
KVM uses same WIM tlb attributes as the corresponding qemu pte.
For this we now search the linux pte for the requested page and
get these cache caching/coherency attributes from pte.
Signed-off-by: Bharat Bhushan
---
v1->v2
- Use Linux pte for wimge rather than RAM/no-RAM mechanism
a
KVM need to lookup linux pte for getting TLB attributes (WIMGE).
This is similar to how book3s does.
This will be used in follow-up patches.
Signed-off-by: Bharat Bhushan
---
v1->v2
- This is a new change in this version
arch/powerpc/include/asm/kvm_booke.h |
Linux pte search functions find_linux_pte_or_hugepte() and
find_linux_pte() have nothing specific to 64bit anymore.
So they are move from pgtable-ppc64.h to asm/pgtable.h
Signed-off-by: Bharat Bhushan
---
v1->v2
- This is a new change in this version
arch/powerpc/include/asm/pgtable-ppc6
"G" bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting "E", so allow him.
Signed-off-by: Bharat Bhushan
---
v1->v2
- no change
arch/powerpc/kvm/e500.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/ar
"E" bit in MAS2 bit indicates whether the page is accessed
in Little-Endian or Big-Endian byte order.
There is no reason to stop guest setting "E", so allow him."
Signed-off-by: Bharat Bhushan
---
v1->v2
- no change
arch/powerpc/kvm/e500.h |2 +-
1 files
For booke3e _PAGE_ENDIAN is not defined. Infact what is defined
is "_PAGE_LENDIAN" which is wrong and should be _PAGE_ENDIAN.
There are no compilation errors as
arch/powerpc/include/asm/pte-common.h defines _PAGE_ENDIAN to 0
as it is not defined anywhere.
Signed-off-by: Bharat Bhushan
From: Bharat Bhushan
First patch is a typo fix where book3e define _PAGE_LENDIAN while it should be
defined as _PAGE_ENDIAN. This seems to show that this is never exercised :-)
Second and third patch is to allow guest controlling "G"-Guarded and
"E"-Endiany TLB attributes re
re cacheable mapping, which is not yet
supported.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/kvm/e500_mmu_host.c | 24 +++-
1 files changed, 19 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kvm/e500_mmu_host.c b/arch/powerpc/kvm/e500_mmu_host.c
index 1c6a9d7..
"E" bit in MAS2 bit indicates whether the page is accessed
in Little-Endian or Big-Endian byte order.
There is no reason to stop guest setting "E", so allow him."
Signed-off-by: Bharat Bhushan
---
arch/powerpc/kvm/e500.h |2 +-
1 files changed, 1 insertions(+), 1 d
"G" bit in MAS2 indicates whether the page is Guarded.
There is no reason to stop guest setting "G", so allow him.
Signed-off-by: Bharat Bhushan
---
arch/powerpc/kvm/e500.h |2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/powerpc/kvm/e500.h b/a
For booke3e _PAGE_ENDIAN is not defined. Infact what is defined
is "_PAGE_LENDIAN" which is wrong and that should be _PAGE_ENDIAN.
There are no compilation errors as
arch/powerpc/include/asm/pte-common.h defines _PAGE_ENDIAN to 0
as it is not defined anywhere.
Signed-off-by: Bhar
From: Bharat Bhushan
Note: These patches depends on https://lkml.org/lkml/2013/7/4/49.
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 debugging. It
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
For KVM also use the "struct debug_reg" defined in asm/processor.h
Signed-off-by: Bharat Bhushan
---
v5->v6
- no changes
arch/powerpc/include/asm/kvm_host.h | 13 +
arch/powerpc/kvm/booke.c| 34 --
2 files changed,
"ehpriv 1" 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.
KVM need this function when switching from vcpu to user-space
thread. My subsequent patch will use this function.
Signed-off-by: Bharat Bhushan
---
v5->v6
- switch_booke_debug_regs() not guarded by the compiler switch
arch/powerpc/include/asm/switch_to.h |1 +
arch/powerpc/ker
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
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
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