On Thu, Jul 09, 2020 at 03:18:03PM +1000, Paul Mackerras wrote:
> On Fri, Jul 03, 2020 at 04:14:20PM +0530, Bharata B Rao wrote:
> > In the nested KVM case, replace H_TLB_INVALIDATE by the new hcall
> > H_RPT_INVALIDATE if available. The availability of this hcall
> > is deter
mmap_sem is help in read mode during that time, not in write
> mode since the virual memory layout is not impacted, and
> kvm->arch.uvmem_lock prevents concurrent operation on the secure device.
>
> Cc: Ram Pai
> Cc: Bharata B Rao
> Cc: Paul Mackerras
On Mon, Jul 06, 2020 at 07:19:02AM +0530, Santosh Sivaraj wrote:
>
> Hi Bharata,
>
> Bharata B Rao writes:
>
> > Make GTSE an MMU feature and enable it by default for radix.
> > However for guest, conditionally enable it if hypervisor supports
> > it via OV5 ve
In the nested KVM case, replace H_TLB_INVALIDATE by the new hcall
H_RPT_INVALIDATE if available. The availability of this hcall
is determined from "hcall-rpt-invalidate" string in ibm,hypertas-functions
DT property.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/firmware.h
Implements H_RPT_INVALIDATE hcall and supports only nested case
currently.
A KVM capability KVM_CAP_RPT_INVALIDATE is added to indicate the
support for this hcall.
Signed-off-by: Bharata B Rao
---
Documentation/virt/kvm/api.rst| 17
.../include/asm/book3s/64/tlbflush
by the range are to be invalidated.
Those which are partially covered are considered outside invalidation
range, which allows a caller to optimally invalidate ranges that may
contain mixed page sizes.
* Return H_SUCCESS on success.
Bharata B Rao (2):
KVM: PPC: Book3S HV: Add support for H_R
From: Nicholas Piggin
When platform doesn't support GTSE, let TLB invalidation requests
for radix guests be off-loaded to the host using H_RPT_INVALIDATE
hcall.
Signed-off-by: Nicholas Piggin
Signed-off-by: Bharata B Rao
[hcall wrapper, error path handling and renames
H_REGISTER_PROC_TBL asks for GTSE by default. GTSE flag bit should
be set only when GTSE is supported.
Signed-off-by: Bharata B Rao
Reviewed-by: Aneesh Kumar K.V
---
arch/powerpc/platforms/pseries/lpar.c | 8 +---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc
radix assumes GTSE is enabled by default.
Signed-off-by: Bharata B Rao
Reviewed-by: Aneesh Kumar K.V
---
arch/powerpc/include/asm/mmu.h| 4
arch/powerpc/kernel/dt_cpu_ftrs.c | 1 +
arch/powerpc/kernel/prom_init.c | 13 -
arch/powerpc/mm/init_64.c | 5 -
4
the failed flush request with
a full flush for the nested case.
- s/psize_to_h_rpti/psize_to_rpti_pgsize
v2:
https://lore.kernel.org/linuxppc-dev/20200626131000.5207-1-bhar...@linux.ibm.com/T/#t
Bharata B Rao (2):
powerpc/mm: Enable radix GTSE only if supported.
powerpc/pseries: H_REGISTER_PROC_TBL
On Fri, Jun 26, 2020 at 05:55:30PM -0300, Murilo Opsfelder Araújo wrote:
> > diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
> > index bc73abf0bc25..152aa0200cef 100644
> > --- a/arch/powerpc/mm/init_64.c
> > +++ b/arch/powerpc/mm/init_64.c
> > @@ -407,12 +407,15 @@ static void
On Sun, Jun 28, 2020 at 09:41:53PM +0530, Bharata B Rao wrote:
> On Fri, Jun 19, 2020 at 03:43:38PM -0700, Ram Pai wrote:
> > The time taken to switch a VM to Secure-VM, increases by the size of the
> > VM. A
> > 100GB VM takes about 7minutes. This is unacceptable.
T_DONE. Skip the GFNs that are already Paged-in or Shared
> through H_SVM_PAGE_IN, or Paged-in followed by a Paged-out through
> UV_PAGE_OUT.
>
> Cc: Paul Mackerras
> Cc: Benjamin Herrenschmidt
> Cc: Michael Ellerman
> Cc: Bharata B Rao
> Cc: Aneesh Kumar K.V
> Cc: Sukadev Bhat
On Fri, Jun 19, 2020 at 03:43:38PM -0700, Ram Pai wrote:
> The time taken to switch a VM to Secure-VM, increases by the size of the VM.
> A
> 100GB VM takes about 7minutes. This is unacceptable. This linear increase is
> caused by a suboptimal behavior by the Ultravisor and the Hypervisor. The
radix assumes GTSE is enabled by default.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/mmu.h| 4
arch/powerpc/kernel/dt_cpu_ftrs.c | 1 +
arch/powerpc/kernel/prom_init.c | 13 -
arch/powerpc/mm/init_64.c | 5 -
4 files changed, 17 insertions(+), 6
H_REGISTER_PROC_TBL asks for GTSE by default. GTSE flag bit should
be set only when GTSE is supported.
Signed-off-by: Bharata B Rao
---
arch/powerpc/platforms/pseries/lpar.c | 8 +---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch
On Tue, Jun 23, 2020 at 04:07:34PM +0530, Aneesh Kumar K.V wrote:
> Bharata B Rao writes:
>
> > We can hit the following BUG_ON during memory unplug:
> >
> > kernel BUG at arch/powerpc/mm/book3s64/pgtable.c:342!
> > Oops: Exception in kernel mode, sig: 5 [#1]
>
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/powerpc/include
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/arch
we end up issuing more number of mapping requests
than earlier.
Signed-off-by: Bharata B Rao
---
arch/powerpc/mm/book3s64/radix_pgtable.c | 15 ---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c
b/arch/powerpc/mm/book3s64/radix
patch that removed split_kernel_mapping() to ensure
that spilitting code is available for any radix guest running on
platforms that don't set DRCONF_MEM_HOTREMOVABLE.
v0:
https://lore.kernel.org/linuxppc-dev/20200406034925.22586-1-bhar...@linux.ibm.com/
Bharata B Rao (3):
powerpc/mm/radix
In the nested KVM case, replace H_TLB_INVALIDATE by the new hcall
H_RPT_INVALIDATE if available. The availability of this hcall
is determined from "hcall-rpt-invalidate" string in ibm,hypertas-functions
DT property.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/firmware.h
From: Nicholas Piggin
When platform doesn't support GTSE, let TLB invalidation requests
for radix guests be off-loaded to the host using H_RPT_INVALIDATE
hcall.
Signed-off-by: Nicholas Piggin
Signed-off-by: Bharata B Rao
[hcall wrapper, error path handling and renames]
---
arch
H_REGISTER_PROC_TBL asks for GTSE by default. GTSE flag bit should
be set only when GTSE is supported.
Signed-off-by: Bharata B Rao
---
arch/powerpc/platforms/pseries/lpar.c | 8 +---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch
In the case of radix, don't ask for GTSE by default but ask
only if GTSE is enabled.
Signed-off-by: Bharata B Rao
---
arch/powerpc/kernel/prom_init.c | 13 -
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel
-by: Bharata B Rao
---
arch/powerpc/include/asm/mmu.h| 4
arch/powerpc/kernel/dt_cpu_ftrs.c | 1 +
arch/powerpc/mm/init_64.c | 5 -
3 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/include/asm/mmu.h b/arch/powerpc/include/asm/mmu.h
index f4ac25d4df05
xed page sizes.
* Return H_SUCCESS on success.
Bharata B Rao (4):
powerpc/mm: Make GTSE an MMU FTR
powerpc/prom_init: Ask for Radix GTSE only if supported.
powerpc/pseries: H_REGISTER_PROC_TBL should ask for GTSE only if
enabled
KVM: PPC: Book3S HV: Use H_RPT_INVALIDATE in nested
H_REGISTER_PROC_TBL asks for GTSE by default. GTSE flag bit should
be set only when GTSE is supported.
Signed-off-by: Bharata B Rao
---
arch/powerpc/platforms/pseries/lpar.c | 8 +---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c
b/arch
From: Nicholas Piggin
When platform doesn't support GTSE, let TLB invalidation requests
for radix guests be off-loaded to the host using H_RPT_INVALIDATE
hcall
Signed-off-by: Nicholas Piggin
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 1 +
arch/powerpc
Make GTSE as an MMU feature and enable it by default for radix.
However for guest, conditionally enable it if hypervisor supports it
via OV5 vector.
Making GTSE as a MMU feature will make it easy to enable radix
without GTSE.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/mmu.h
In the case of radix, don't ask for GTSE by default but ask
only if GTSE is enabled.
Signed-off-by: Bharata B Rao
---
arch/powerpc/kernel/prom_init.c | 13 -
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel
are fully covered by the range are to be invalidated.
Those which are partially covered are considered outside invalidation
range, which allows a call to optimally invalidate ranges that may
contain mixed page sizes.
* Return H_SUCCESS on success.
Bharata B Rao (3):
powerpc/mm: Make GTSE as MMU
On Wed, Jun 03, 2020 at 04:10:25PM -0700, Ram Pai wrote:
> On Tue, Jun 02, 2020 at 03:36:39PM +0530, Bharata B Rao wrote:
> > On Mon, Jun 01, 2020 at 12:05:35PM -0700, Ram Pai wrote:
> > > On Mon, Jun 01, 2020 at 05:25:18PM +0530, Bharata B Rao wrote:
> > > > On S
On Mon, Jun 01, 2020 at 12:05:35PM -0700, Ram Pai wrote:
> On Mon, Jun 01, 2020 at 05:25:18PM +0530, Bharata B Rao wrote:
> > On Sat, May 30, 2020 at 07:27:50PM -0700, Ram Pai wrote:
> > > H_SVM_INIT_DONE incorrectly assumes that the Ultravisor has explicitly
> > > c
On Sat, May 30, 2020 at 07:27:50PM -0700, Ram Pai wrote:
> H_SVM_INIT_DONE incorrectly assumes that the Ultravisor has explicitly
> called H_SVM_PAGE_IN for all secure pages.
I don't think that is quite true. HV doesn't assume anything about
secure pages by itself.
> These GFNs continue to be
>
Aneesh,
Do these memory unplug fixes on radix look fine? Do you want these
to be rebased on recent kernel? Would you like me to test any specific
scenario with these fixes?
Regards,
Bharata.
On Mon, Apr 06, 2020 at 09:19:20AM +0530, Bharata B Rao wrote:
> Memory unplug has a few bugs whic
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 bit
&g
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
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/arch
;)
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
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/powerpc
-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 ---
1
/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/pseries/hotplug
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
plugable 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
>
> ---
>
> Changes since v2:
> -
ur 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/
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
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 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
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 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
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
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
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
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
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,
When migrate_vma_setup() fails in kvmppc_svm_page_out(),
release kvm->arch.uvmem_lock before returning.
Fixes: ca9f4942670 ("KVM: PPC: Book3S HV: Support for running secure guests")
Signed-off-by: Bharata B Rao
---
Applies on paulus/kvm-ppc-next branch
arch/powerpc/kvm/book3s_h
Let PPC_UV depend only on DEVICE_PRIVATE which in turn
will satisfy all the other required dependencies
Fixes: 013a53f2d25a ("powerpc: Ultravisor: Add PPC_UV config option")
Reported-by: kbuild test robot
Signed-off-by: Bharata B Rao
---
arch/powerpc/Kconfig | 6 +-
1 file
On Sat, Dec 14, 2019 at 06:12:08PM -0800, Sukadev Bhattiprolu wrote:
> +unsigned long kvmppc_h_svm_init_abort(struct kvm *kvm)
> +{
> + int i;
> +
> + if (!(kvm->arch.secure_guest & KVMPPC_SECURE_INIT_START))
> + return H_UNSUPPORTED;
> +
> + for (i = 0; i <
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, 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 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 08:36:25AM +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
> achie
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
that they 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 B Rao
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
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/ultravisor
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
ges() 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 +
a
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_madvise
, 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
Bharata B
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:
> >
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 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 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 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 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 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
> &
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.
>
> C
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
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: Bharata B
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/kvm/api.txt
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
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/ultravisor
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
ges() 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 +
a
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 a/mm
ies 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 (6):
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
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.
> >
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
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/kvm/api.txt
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
Reviewed-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/kvm_host.h | 12
Register the new memslot with UV during plug and unregister
the memslot during unplug.
Signed-off-by: Bharata B Rao
Acked-by: Paul Mackerras
Reviewed-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/ultravisor-api.h | 1 +
arch/powerpc/include/asm/ultravisor.h | 5 +
arch
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
Revie
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 | 86 --
2 files changed, 85 insertions(+), 4 deletions(-)
diff --git a/arch/powerpc/include/asm
memory is done via migrate_vma_pages() using UV_PAGE_IN and
UV_PAGE_OUT ucalls.
Signed-off-by: Bharata B Rao
---
arch/powerpc/include/asm/hvcall.h | 4 +
arch/powerpc/include/asm/kvm_book3s_uvmem.h | 29 ++
arch/powerpc/include/asm/kvm_host.h | 13 +
arch/powerpc/include/asm
).
Signed-off-by: Suraj Jitindar Singh
Signed-off-by: Paul Mackerras
Signed-off-by: Bharata B Rao
[Added rmap type KVMPPC_RMAP_UVMEM_PFN]
Reviewed-by: Sukadev Bhattiprolu
---
arch/powerpc/include/asm/kvm_host.h | 28
arch/powerpc/kvm/book3s_hv_rm_mmu.c
.
- Address review comments by Suka
- Misc cleanups
v8:
https://lore.kernel.org/linux-mm/20190910082946.7849-2-bhar...@linux.ibm.com/T/
Anshuman Khandual (1):
KVM: PPC: Ultravisor: Add PPC_UV config option
Bharata B Rao (6):
KVM: PPC: Move pages between normal and secure memory
KVM: PPC
On Wed, Sep 18, 2019 at 12:42:10PM +0530, Bharata B Rao wrote:
> On Tue, Sep 17, 2019 at 04:31:39PM -0700, Sukadev Bhattiprolu wrote:
> >
> > Minor: Can this allocation be outside the lock? I guess it would change
> > the order of cleanup at the end of the function.
>
&g
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