On Fri, Sep 5, 2014 at 7:38 PM, Nathan Fontenot
wrote:
> On 09/05/2014 04:16 AM, bharata@gmail.com wrote:
>> From: Bharata B Rao
>>
>> - ibm,rtas-configure-connector should treat the RTAS data as big endian.
>> - Treat ibm,ppc-interrupt-server#s
On Sat, Sep 13, 2014 at 12:41 AM, Thomas Falcon
wrote:
> When removing a cpu, this patch makes sure that values
> gotten from or passed to firmware are in the correct
> endian format.
>
> Signed-off-by: Thomas Falcon
> ---
> Changes in v2:
>
> Followed suggestions from Michael Ellerman:
>Con
On Fri, Oct 31, 2014 at 03:41:34PM -0400, Dan Streetman wrote:
> In powerpc pseries platform dlpar operations, Use device_online() and
> device_offline() instead of cpu_up() and cpu_down().
>
> Calling cpu_up/down directly does not update the cpu device offline
> field, which is used to online/off
Hi,
While developing memory hotplug support in QEMU for PoweKVM, I
realized that guest kernel has specific checks to prevent hot addition
of memory to a memory-less node.
I am referring to arch/powerpc/mm/numa.c:hot_add_scn_to_nid() which
has explicit checks to ensure that it returns a nid that h
So will it be correct to say that memory hotplug to memory-less node
isn't supported by PowerPC kernel ? Should I enforce the same in QEMU
for PowerKVM ?
On Mon, Jun 22, 2015 at 10:18 AM, Bharata B Rao wrote:
> Hi,
>
> While developing memory hotplug support in QEMU for PoweKVM
Any feedback on the below patch ?
On Mon, Mar 9, 2015 at 11:00 AM, wrote:
> From: Bharata B Rao
>
> Since KVM isn't equipped to handle closure of vcpu fd from userspace(QEMU)
> correctly, certain work arounds have to be employed to allow reuse of
> vcpu array slot in KVM
of converting
spaces to tabs w/o which checkpatch.pl complains.
Signed-off-by: Bharata B Rao
---
arch/powerpc/mm/numa.c | 29 ++---
1 file changed, 22 insertions(+), 7 deletions(-)
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 669a15e..57d5877 100
On Fri, Apr 08, 2016 at 12:27:44AM -0500, Nathan Fontenot wrote:
> On 04/06/2016 04:44 AM, Bharata B Rao wrote:
> > memory_hotplug_max() uses hot_add_drconf_memory_max() to get maxmimum
> > addressable memory by referring to ibm,dyanamic-memory property. There
> > are th
On Sat, Apr 09, 2016 at 03:44:31PM +0530, Bharata B Rao wrote:
> On Fri, Apr 08, 2016 at 12:27:44AM -0500, Nathan Fontenot wrote:
> > On 04/06/2016 04:44 AM, Bharata B Rao wrote:
> > > memory_hotplug_max() uses hot_add_drconf_memory_max() to get maxmimum
> > > address
From: Bharata B Rao
dlpar_cpu_probe() should release the acquired DRC if configure_connector
call fails.
Signed-off-by: Bharata B Rao
Cc: Nathan Fontenot
---
arch/powerpc/platforms/pseries/dlpar.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms
From: Bharata B Rao
Commit f32393c943e2 ("powerpc/pseries: Correct cpu affinity for
dlpar added cpus") moved dlpar_acquire_drc() call to before
dlpar_configure_connector() call in dlpar_cpu_probe(), but missed
to release the DRC if dlpar_configure_connector() failed.
During CPU h
On Mon, Sep 07, 2015 at 07:22:04PM +1000, Michael Ellerman wrote:
> On Fri, 2015-04-09 at 10:04:12 UTC, Bharata B Rao wrote:
> > From: Bharata B Rao
> >
> > dlpar_cpu_probe() should release the acquired DRC if configure_connector
> > call fails.
> >
> &g
On Tue, Sep 08, 2015 at 04:08:06PM +1000, Michael Ellerman wrote:
> On Wed, 2015-08-12 at 10:53 +0530, Bharata B Rao wrote:
> > On Tue, Aug 11, 2015 at 03:48:26PM +0200, Andrea Arcangeli wrote:
> > > Hello Bharata,
> > >
> > > On Tue, Aug 11, 2015 at 0
On Tue, Sep 08, 2015 at 09:59:47AM +0100, Dr. David Alan Gilbert wrote:
> * Bharata B Rao (bhar...@linux.vnet.ibm.com) wrote:
> > In fact I had successfully done postcopy migration of sPAPR guest with
> > this setup.
>
> Interesting - I'd not got that far myself on powe
On Tue, Sep 08, 2015 at 01:46:52PM +0100, Dr. David Alan Gilbert wrote:
> * Bharata B Rao (bhar...@linux.vnet.ibm.com) wrote:
> > On Tue, Sep 08, 2015 at 09:59:47AM +0100, Dr. David Alan Gilbert wrote:
> > > * Bharata B Rao (bhar...@linux.vnet.ibm.com) wrote:
> > > &
shift 25 to 23
Unable to resize hash page table to target order 23: -28
Signed-off-by: Bharata B Rao
---
arch/powerpc/platforms/pseries/lpar.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch/powerpc/platforms/pseries/lpar.c
On Wed, Apr 10, 2019 at 08:20:53PM +1000, Michael Ellerman wrote:
> Bharata B Rao writes:
>
> > When HPT resizing is attempted in response to memory hotplug, we see
> > the following messages from the kernel:
> >
> > lpar: Attempting to resize HPT to shift 23
> &
On Fri, Feb 28, 2020 at 11:36 AM Leonardo Bras wrote:
>
> While providing guests, it's desirable to resize it's memory on demand.
>
> By now, it's possible to do so by creating a guest with a small base
> memory, hot-plugging all the rest, and using 'movable_node' kernel
> command-line parameter,
Hi,
We are seeing an increased slab memory consumption on PowerPC guest
LPAR (on PowerVM) having an uncommon topology where one NUMA node has no
CPUs or any memory and the other node has all the CPUs and memory. Though
QEMU prevents such topologies for KVM guest, I hacked QEMU to allow such
topolo
On Tue, Mar 17, 2020 at 02:56:28PM +0530, Bharata B Rao wrote:
> Case 1: 2 node NUMA, node0 empty
>
> # numactl -H
> available: 2 nodes (0-1)
> node 0 cpus:
> node 0 size: 0 MB
> node 0 free: 0 MB
> node 1 cpus: 0 1 2 3 4 5 6 7
> node 1 s
This patchset can also fix a related problem that I reported earlier at
https://lists.ozlabs.org/pipermail/linuxppc-dev/2020-March/206076.html
with an additional change, suggested by Srikar as shown below:
On Tue, Mar 17, 2020 at 06:47:53PM +0530, Srikar Dronamraju wrote:
> Currently fallback node
On Wed, Mar 18, 2020 at 08:50:44AM +0530, Srikar Dronamraju wrote:
> * Vlastimil Babka [2020-03-17 17:45:15]:
>
> > On 3/17/20 5:25 PM, Srikar Dronamraju wrote:
> > > * Vlastimil Babka [2020-03-17 16:56:04]:
> > >
> > >>
> > >> I wonder why do you get a memory leak while Sachin in the same sit
On Wed, Mar 18, 2020 at 03:42:19PM +0100, Vlastimil Babka wrote:
> This is a PowerPC platform with following NUMA topology:
>
> available: 2 nodes (0-1)
> node 0 cpus:
> node 0 size: 0 MB
> node 0 free: 0 MB
> node 1 cpus: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
> 25 26 2
On Thu, Mar 19, 2020 at 02:47:58PM +0100, Vlastimil Babka wrote:
> diff --git a/mm/slub.c b/mm/slub.c
> index 17dc00e33115..7113b1f9cd77 100644
> --- a/mm/slub.c
> +++ b/mm/slub.c
> @@ -1973,8 +1973,6 @@ static void *get_partial(struct kmem_cache *s, gfp_t
> flags, int node,
>
> if (node =
On Fri, Mar 20, 2020 at 09:37:18AM +0100, Vlastimil Babka wrote:
> On 3/20/20 4:42 AM, Bharata B Rao wrote:
> > On Thu, Mar 19, 2020 at 02:47:58PM +0100, Vlastimil Babka wrote:
> >> diff --git a/mm/slub.c b/mm/slub.c
> >> index 17dc00e33115..7113b1f9cd77 100644
> &g
gt;
> Move the setting of kvm->arch.secure_guest earlier in
> kvmppc_h_svm_init_start() so in the return path, UV_RETURN will be called
> instead of rfid.
>
> Cc: Bharata B Rao
> Cc: Paul Mackerras
> Cc: Benjamin Herrenschmidt
> Cc: Michael Ellerman
> Signed-off-by: Lau
On Fri, Mar 20, 2020 at 03:36:05PM +0100, Laurent Dufour wrote:
> Le 20/03/2020 à 12:24, Bharata B Rao a écrit :
> > On Fri, Mar 20, 2020 at 11:26:43AM +0100, Laurent Dufour wrote:
> > > When the call to UV_REGISTER_MEM_SLOT is failing, for instance because
> > > there
et your comments on this change, but it's still not
> > ready for being merged.
>
> New flag got approved on the documentation.
> Please review this patch.
Looks good to me, also tested with PowerKVM guests.
Reviewed-by: Bharata B Rao
Regards,
Bharata.
--
http://raobharata.wordpress.com/
lag and
> marking memblocks as hotplugable memory is enough to get the desirable
> behavior.
>
> This should cause no change if 'movable_node' parameter is not passed
> in kernel command-line.
>
> Signed-off-by: Leonardo Bras
> Reviewed-by: Bharata B Rao
>
In addition to setting DRCONF_MEM_HOTREMOVABLE for boot-time hot-plugged
memory, we should set the same too for the memory that gets hot-plugged
post-boot. This ensures that correct LMB flags value is reflected in
ibm,dynamic-memory-vN property.
Signed-off-by: Bharata B Rao
---
arch/powerpc
l.org/linuxppc-dev/f55a7b65a43cc9dc7b22385cf9960f8b11d5ce2e.ca...@linux.ibm.com/T/#t),
a few other issues around memory unplug on radix can be fixed. This
series is a combination of those fixes.
This series works on top of above mentioned Leonardo's patch.
Bharata B Rao (5):
powerpc/pseri
iating hot-plugged memory from the
boot time memory is now possible with PAPR extension to LMB flags.
(Ref:
https://lore.kernel.org/linuxppc-dev/f55a7b65a43cc9dc7b22385cf9960f8b11d5ce2e.ca...@linux.ibm.com/T/#t)
Signed-off-by: Bharata B Rao
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 15
M for vmemmap with struct page size being 64B.
1 PUD table for 2G memory (1G mapping)
1 PUD table and 1 PMD table for 2M vmemmap (2M mappings)
With default PUD[PMD]_TABLE_SIZE(4K), (1+1+1)*4K=12K
With new PAGE_SIZE(64K) table allocations, (1+1+1)*64K=192K
Signed-off-by: Bharata B Rao
---
arch/po
;)
Signed-off-by: Bharata B Rao
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 93 +---
1 file changed, 19 insertions(+), 74 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c
b/arch/powerpc/mm/book3s64/radix_pgtable.c
index 0d9ef3277579..56f2c698deac 100644
remove_pagetable() isn't freeing PUD table. This causes memory
leak during memory unplug. Fix this.
Signed-off-by: Bharata B Rao
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 16
1 file changed, 16 insertions(+)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c
b
On Fri, Oct 18, 2019 at 8:31 AM Paul Mackerras wrote:
>
> On Wed, Sep 25, 2019 at 10:36:43AM +0530, Bharata B Rao wrote:
> > Manage migration of pages betwen normal and secure memory of secure
> > guest by implementing H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls.
> >
>
On Wed, Oct 23, 2019 at 03:17:54PM +1100, Paul Mackerras wrote:
> On Tue, Oct 22, 2019 at 11:59:35AM +0530, Bharata B Rao wrote:
> The mapping of pages in userspace memory, and the mapping of userspace
> memory to guest physical space, are two distinct things. The memslots
> describe
ndencies required by this patchset are in powerpc/next
on which this patchset is based upon.
Outside of PowerPC code, this needs a change in KSM code as this
patchset uses ksm_madvise() which is not exported.
Anshuman Khandual (1):
KVM: PPC: Ultravisor: Add PPC_UV config option
Bharata B Rao (
KVM PPC module needs ksm_madvise() for supporting secure guests.
Guest pages that become secure are represented as device private
pages in the host. Such pages shouldn't participate in KSM merging.
Signed-off-by: Bharata B Rao
---
mm/ksm.c | 1 +
1 file changed, 1 insertion(+)
diff --git
ma_pages() using UV_PAGE_IN and
UV_PAGE_OUT ucalls.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 6 +
arch/powerpc/include/asm/kvm_book3s_uvmem.h | 62 ++
arch/powerpc/include/asm/kvm_host.h | 6 +
arch/powerpc/include/asm/ultravisor-api.h | 3
the secure page is unmapped from the HV side page tables.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 3 ++
arch/powerpc/kvm/book3s_hv_uvmem.c | 85 --
2 files changed, 84 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm
;t do so in case of secure VM. For secure guest, the
active secondary page tables are in secure memory and the secondary
page tables in HV are freed when guest becomes secure.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/kvm_book3s_uvmem.h | 6
arch/powerpc/include/asm/ultra
Register the new memslot with UV during plug and unregister
the memslot during unplug. In addition, release all the
device pages during unplug.
Signed-off-by: Bharata B Rao
Signed-off-by: Sukadev Bhattiprolu
[Added skip_page_out arg to kvmppc_uvmem_drop_pages()]
---
arch/powerpc
sue UV_ESM call once again
to switch to secure mode.
Signed-off-by: Bharata B Rao
Signed-off-by: Sukadev Bhattiprolu
[Implementation of uv_svm_terminate() and its call from
guest shutdown path]
Signed-off-by: Ram Pai
[Unpinning of VPA pages]
---
Documentation/virt/k
ld be stuck in secure memory.
Since the SVM did not go secure, its MSR_S bit will be clear and the
VM wont be able to access its pages even to do a clean exit.
Based on patches and discussion with Ram Pai and Bharata Rao.
Signed-off-by: Sukadev Bhattiprolu
Signed-off-by: Ram Pai
Signed-off-by: Bhar
From: Anshuman Khandual
CONFIG_PPC_UV adds support for ultravisor.
Signed-off-by: Anshuman Khandual
Signed-off-by: Bharata B Rao
Signed-off-by: Ram Pai
[ Update config help and commit message ]
Signed-off-by: Claudio Carvalho
Reviewed-by: Sukadev Bhattiprolu
---
arch/powerpc/Kconfig | 17
On Wed, Nov 06, 2019 at 03:30:58PM +1100, Paul Mackerras wrote:
> On Mon, Nov 04, 2019 at 09:47:52AM +0530, Bharata B Rao wrote:
> >
> > Now, all the dependencies required by this patchset are in powerpc/next
> > on which this patchset is based upon.
>
> Can you tell
On Wed, Nov 06, 2019 at 03:33:29PM +1100, Paul Mackerras wrote:
> On Mon, Nov 04, 2019 at 09:47:53AM +0530, Bharata B Rao wrote:
> > KVM PPC module needs ksm_madvise() for supporting secure guests.
> > Guest pages that become secure are represented as device private
> > pa
On Wed, Nov 06, 2019 at 03:52:38PM +1100, Paul Mackerras wrote:
> On Mon, Nov 04, 2019 at 09:47:55AM +0530, Bharata B Rao wrote:
> > A secure guest will share some of its pages with hypervisor (Eg. virtio
> > bounce buffers etc). Support sharing of pages between hypervisor and
On Wed, Nov 06, 2019 at 01:52:39PM +0530, Bharata B Rao wrote:
> > However, since kvmppc_gfn_is_uvmem_pfn() returned true, doesn't that
> > mean that pfn here should be a device pfn, and in fact should be the
> > same as uvmem_pfn (possibly with some extra bit(s) set)?
>
On Wed, Nov 06, 2019 at 04:58:23PM +1100, Paul Mackerras wrote:
> On Mon, Nov 04, 2019 at 09:47:56AM +0530, Bharata B Rao wrote:
> > - After the guest becomes secure, when we handle a page fault of a page
> > belonging to SVM in HV, send that page to UV via UV_PAGE_IN.
> >
On Mon, Nov 11, 2019 at 04:28:06PM +1100, Paul Mackerras wrote:
> On Mon, Nov 04, 2019 at 09:47:58AM +0530, Bharata B Rao wrote:
> > Add support for reset of secure guest via a new ioctl KVM_PPC_SVM_OFF.
> > This ioctl will be issued by QEMU during reset and includes the
> >
On Tue, Nov 12, 2019 at 04:34:34PM +1100, Paul Mackerras wrote:
> On Mon, Nov 04, 2019 at 09:47:58AM +0530, Bharata B Rao wrote:
> [snip]
> > @@ -5442,6 +5471,64 @@ static int kvmhv_store_to_eaddr(struct kvm_vcpu
> > *vcpu, ulong *eaddr, void *ptr,
On Thu, Nov 07, 2019 at 04:45:35PM +1100, Paul Mackerras wrote:
> On Wed, Nov 06, 2019 at 12:15:42PM +0530, Bharata B Rao wrote:
> > On Wed, Nov 06, 2019 at 03:33:29PM +1100, Paul Mackerras wrote:
> > > On Mon, Nov 04, 2019 at 09:47:53AM +0530, Bharata B Rao wrote:
> >
reset, when we unpin VPA pages, make sure that no vcpu
is running and fail the SVM_OFF ioctl if any are running (Paul Mackerras)
- Dropped the patch that implemented init_abort hcall as it still has
unresolved questions.
Anshuman Khandual (1):
KVM: PPC: Ultravisor: Add PPC_UV config option
Bhar
ernel module.
Signed-off-by: Bharata B Rao
Acked-by: Paul Mackerras
Cc: Andrea Arcangeli
Cc: Hugh Dickins
---
mm/ksm.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/mm/ksm.c b/mm/ksm.c
index dbee2eb4dd05..e45b02ad3f0b 100644
--- a/mm/ksm.c
+++ b/mm/ksm.c
@@ -2478,6 +2478,7 @@ int ksm_ma
ma_pages() using UV_PAGE_IN and
UV_PAGE_OUT ucalls.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 6 +
arch/powerpc/include/asm/kvm_book3s_uvmem.h | 62 ++
arch/powerpc/include/asm/kvm_host.h | 6 +
arch/powerpc/include/asm/ultravisor-api.h | 3
the secure page is unmapped from the HV side page tables.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 3 ++
arch/powerpc/kvm/book3s_hv_uvmem.c | 85 --
2 files changed, 84 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm
;t do so in case of secure VM. For secure guest, the
active secondary page tables are in secure memory and the secondary
page tables in HV are freed when guest becomes secure.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/kvm_book3s_uvmem.h | 6
arch/powerpc/include/asm/ultra
Register the new memslot with UV during plug and unregister
the memslot during unplug. In addition, release all the
device pages during unplug.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/kvm_book3s_uvmem.h | 6
arch/powerpc/include/asm/ultravisor-api.h | 1 +
arch
can be migrated back to secure
side when guest becomes secure again. This is required because
pinned pages can't be migrated.
- Reinit the partition scoped page tables
After these steps, guest is ready to issue UV_ESM call once again
to switch to secure mode.
Signed-off-by: Bharata
From: Anshuman Khandual
CONFIG_PPC_UV adds support for ultravisor.
Signed-off-by: Anshuman Khandual
Signed-off-by: Bharata B Rao
Signed-off-by: Ram Pai
[ Update config help and commit message ]
Signed-off-by: Claudio Carvalho
Reviewed-by: Sukadev Bhattiprolu
---
arch/powerpc/Kconfig | 17
On Mon, Nov 25, 2019 at 08:36:25AM +0530, Bharata B Rao wrote:
> On PEF-enabled POWER platforms that support running of secure guests,
> secure pages of the guest are represented by device private pages
> in the host. Such pages needn't participate in KSM merging. This is
>
On Tue, Nov 26, 2019 at 07:59:49PM -0800, Hugh Dickins wrote:
> On Mon, 25 Nov 2019, Bharata B Rao wrote:
>
> > On PEF-enabled POWER platforms that support running of secure guests,
> > secure pages of the guest are represented by device private pages
> > in the
On Mon, Nov 25, 2019 at 08:36:24AM +0530, Bharata B Rao wrote:
> Hi,
>
> This is the next version of the patchset that adds required support
> in the KVM hypervisor to run secure guests on PEF-enabled POWER platforms.
>
Here is a fix for the issue Hugh identified with the usage
On Sun, Dec 01, 2019 at 12:24:50PM -0800, Hugh Dickins wrote:
> On Thu, 28 Nov 2019, Bharata B Rao wrote:
> > On Mon, Nov 25, 2019 at 08:36:24AM +0530, Bharata B Rao wrote:
> > > Hi,
> > >
> > > This is the next version of the patchset that adds required suppor
On Mon, Apr 06, 2020 at 12:41:01PM -0300, Leonardo Bras wrote:
> Hello Bharata,
>
> On Fri, 2020-04-03 at 20:08 +0530, Bharata B Rao wrote:
> > The patch would be more complete with the following change that ensures
> > that DRCONF_MEM_HOTREMOVABLE flag is set for non
On Mon, Apr 06, 2020 at 09:19:20AM +0530, Bharata B Rao wrote:
> Memory unplug has a few bugs which I had attempted to fix ealier
> at https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-July/194087.html
>
> Now with Leonardo's patch for PAPR changes that add a separate flag b
rds,
Bharata.
Bharata B Rao (3):
kvmppc: HMM backend driver to manage pages of secure guest
kvmppc: H_SVM_INIT_START and H_SVM_INIT_DONE hcalls
kvmppc: Handle memory plug/unplug to secure VM
arch/powerpc/include/asm/hvcall.h| 9 +-
arch/powerpc/include/asm/kvm_host.h | 11 +
arch/powe
H_SVM_INIT_START: Initiate securing a VM
H_SVM_INIT_DONE: Conclude securing a VM
During early guest init, these hcalls will be issued by UV.
As part of these hcalls, [un]register memslots with UV.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h| 4 ++-
arch/powerpc
HMM driver for KVM PPC to manage page transitions of
secure guest via H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls.
H_SVM_PAGE_IN: Move the content of a normal page to secure page
H_SVM_PAGE_OUT: Move the content of a secure page to normal page
Signed-off-by: Bharata B Rao
---
arch/powerpc/include
Register the new memslot with UV during plug and unregister the memslot
during unplug.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/kvm_ppc.h | 6 --
arch/powerpc/include/asm/ucall-api.h | 5 +
arch/powerpc/kvm/book3s.c| 5 +++--
arch/powerpc/kvm
in v1
=
- Moved from global HMM pages hash table to per guest hash
- Added support for shared pages (non-secure/normal pages of a secure
guest)
- Misc cleanups and fixes
v0: https://www.mail-archive.com/linuxppc-dev@lists.ozlabs.org/msg138742.html
Bharata B Rao (4):
kvmppc: HMM back
HMM driver for KVM PPC to manage page transitions of
secure guest via H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls.
H_SVM_PAGE_IN: Move the content of a normal page to secure page
H_SVM_PAGE_OUT: Move the content of a secure page to normal page
Signed-off-by: Bharata B Rao
---
arch/powerpc/include
A secure guest will share some of its pages with hypervisor (Eg. virtio
bounce buffers etc). Support shared pages in HMM driver.
Signed-off-by: Bharata B Rao
---
arch/powerpc/kvm/book3s_hv_hmm.c | 69 ++--
1 file changed, 65 insertions(+), 4 deletions(-)
diff --git
H_SVM_INIT_START: Initiate securing a VM
H_SVM_INIT_DONE: Conclude securing a VM
During early guest init, these hcalls will be issued by UV.
As part of these hcalls, [un]register memslots with UV.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h| 4 ++-
arch/powerpc
Register the new memslot with UV during plug and unregister the memslot
during unplug.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/kvm_ppc.h | 6 --
arch/powerpc/include/asm/ucall-api.h | 5 +
arch/powerpc/kvm/book3s.c| 5 +++--
arch/powerpc/kvm
On Tue, Oct 30, 2018 at 04:03:00PM +1100, Paul Mackerras wrote:
> On Mon, Oct 22, 2018 at 10:48:34AM +0530, Bharata B Rao wrote:
> > HMM driver for KVM PPC to manage page transitions of
> > secure guest via H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls.
> >
> > H_SVM_PAG
On Tue, Oct 30, 2018 at 04:26:46PM +1100, Paul Mackerras wrote:
> On Mon, Oct 22, 2018 at 10:48:35AM +0530, Bharata B Rao wrote:
> > A secure guest will share some of its pages with hypervisor (Eg. virtio
> > bounce buffers etc). Support shared pages in HMM driver.
> >
>
On Tue, Oct 30, 2018 at 04:29:57PM +1100, Paul Mackerras wrote:
> On Mon, Oct 22, 2018 at 10:48:36AM +0530, Bharata B Rao wrote:
> > H_SVM_INIT_START: Initiate securing a VM
> > H_SVM_INIT_DONE: Conclude securing a VM
> >
> > During early guest init, these hcalls will b
On Thu, Nov 01, 2018 at 05:43:39PM +1100, Balbir Singh wrote:
> On Mon, Oct 22, 2018 at 10:48:34AM +0530, Bharata B Rao wrote:
> > HMM driver for KVM PPC to manage page transitions of
> > secure guest via H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls.
> >
> > H_SVM_PAGE_IN: M
On Thu, Nov 01, 2018 at 09:45:52PM +1100, Balbir Singh wrote:
> On Mon, Oct 22, 2018 at 10:48:35AM +0530, Bharata B Rao wrote:
> > A secure guest will share some of its pages with hypervisor (Eg. virtio
> > bounce buffers etc). Support shared pages in HMM driver.
> >
> &g
On Thu, Nov 01, 2018 at 09:49:26PM +1100, Balbir Singh wrote:
> On Mon, Oct 22, 2018 at 10:48:36AM +0530, Bharata B Rao wrote:
> > H_SVM_INIT_START: Initiate securing a VM
> > H_SVM_INIT_DONE: Conclude securing a VM
> >
> > During early guest init, these hcalls will b
in v2
=
- Removed the HMM PFN hash table as the same information is now being
stored in kvm_memory_slot->arch.rmap[] array as suggested by
Paul Mackerras.
- Addressed the review comments from v1.
Bharata B Rao (4):
kvmppc: HMM backend driver to manage pages of secure guest
A secure guest will share some of its pages with hypervisor (Eg. virtio
bounce buffers etc). Support shared pages in HMM driver.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 3 ++
arch/powerpc/kvm/book3s_hv_hmm.c | 58 +--
2 files changed
H_SVM_INIT_START: Initiate securing a VM
H_SVM_INIT_DONE: Conclude securing a VM
During early guest init, these hcalls will be issued by UV.
As part of these hcalls, [un]register memslots with UV.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h| 2 ++
arch/powerpc
Register the new memslot with UV during plug and unregister
the memslot during unplug.
This needs addition of kvm_mr_change argument to
kvm_ops->commit_memory_region()
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/kvm_ppc.h | 6 --
arch/powerpc/include/asm/ucall-api.h |
HMM driver for KVM PPC to manage page transitions of
secure guest via H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls.
H_SVM_PAGE_IN: Move the content of a normal page to secure page
H_SVM_PAGE_OUT: Move the content of a secure page to normal page
Signed-off-by: Bharata B Rao
---
arch/powerpc/include
t the
fragment count which is part of struct page.
- When PMD or PTE page is freed, check if it comes from memblock
allocator and free it appropriately.
Reported-by: Srikanth Aithal
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/book3s/64/radix.h | 1 +
arch/powerpc/includ
of PMD (and PGD as well) pages,
> > allocate in page size PAGE_SIZE granularity so that we are
> > sure that the complete page is available for us to set the
> > fragment count which is part of struct page.
> > - When PMD or PTE page is freed, check if it comes from membl
On Wed, Jun 19, 2019 at 02:36:54PM +0530, Aneesh Kumar K.V wrote:
> Bharata B Rao writes:
>
> > We hit the following BUG_ON when memory hotplugged before reboot
> > is unplugged after reboot:
> >
> > kernel BUG at arch/powerpc/mm/pgtable-frag.c:113!
> &g
ation requirement as
early page table allocation is already using PAGE_SIZE PTE tables.
So essentially with this change we would use 180 64K pages
more for 64T system.
Reported-by: Srikanth Aithal
Signed-off-by: Bharata B Rao
---
v0 - https://lists.ozlabs.org/pipermail/linuxppc-dev/2019-June/192242
On Mon, Jun 17, 2019 at 03:31:06PM +1000, Paul Mackerras wrote:
> On Tue, May 28, 2019 at 12:19:28PM +0530, Bharata B Rao wrote:
> > HMM driver for KVM PPC to manage page transitions of
> > secure guest via H_SVM_PAGE_IN and H_SVM_PAGE_OUT hcalls.
> >
> > H_SVM_PAG
On Mon, Jun 17, 2019 at 03:37:56PM +1000, Paul Mackerras wrote:
> On Tue, May 28, 2019 at 12:19:30PM +0530, Bharata B Rao wrote:
> > H_SVM_INIT_START: Initiate securing a VM
> > H_SVM_INIT_DONE: Conclude securing a VM
> >
> > As part of H_SVM_INIT_START register all ex
On Tue, Jun 18, 2019 at 08:05:26PM -0300, Thiago Jung Bauermann wrote:
>
> Hello Bharata,
>
> Bharata B Rao writes:
>
> > diff --git a/arch/powerpc/include/asm/kvm_book3s_hmm.h
> > b/arch/powerpc/include/asm/kvm_book3s_hmm.h
> > index 21f3de5f2acb..3e13dab7f
On Mon, Jun 17, 2019 at 02:06:32PM +1000, Paul Mackerras wrote:
> On Tue, May 28, 2019 at 12:19:33PM +0530, Bharata B Rao wrote:
> > Add support for reset of secure guest via a new ioctl KVM_PPC_SVM_OFF.
> > This ioctl will be issued by QEMU during reset and in this ioctl,
&
config option
Bharata B Rao (6):
kvmppc: HMM backend driver to manage pages of secure guest
kvmppc: Shared pages support for secure guests
kvmppc: H_SVM_INIT_START and H_SVM_INIT_DONE hcalls
kvmppc: Handle memory plug/unplug to secure VM
kvmppc: Radix changes for secure guest
kvmppc: Su
memory
available in the platform for running secure guests is created
via a HMM device. The movement of pages between normal and secure
memory is done by ->alloc_and_copy() callback routine of migrate_vma().
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 4 +
a
A secure guest will share some of its pages with hypervisor (Eg. virtio
bounce buffers etc). Support shared pages in HMM driver.
Once a secure page is converted to shared page, HMM driver will stop
tracking that page.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 3
STARTED and transition
to secure mode COMPLETED) are recorded in kvm->arch.secure_guest.
Setting these states will cause the assembly code that enters the
guest to call the UV_RETURN ucall instead of trying to enter the
guest directly.
Signed-off-by: Bharata B Rao
Acked-by: Paul Mackerras
---
a
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