On Thu, Apr 25, 2019 at 01:30:29PM +0100, Alex Bennée wrote:
>
> Dave Martin writes:
>
> > Currently, the way error codes are generated when processing the
> > SVE register access ioctls in a bit haphazard.
> >
> > This patch refactors the code so that the beha
On Wed, Apr 24, 2019 at 09:39:31AM +, Alex Bennée wrote:
>
> Dave Martin writes:
>
> > Some optional features of the Arm architecture add new system
> > registers that are not present in the base architecture.
> >
> > Where these features are optio
On Wed, Apr 24, 2019 at 11:27:50AM +0530, Amit Daniel Kachhap wrote:
> Hi,
>
> On 4/23/19 9:14 PM, Dave Martin wrote:
> >On Tue, Apr 23, 2019 at 10:12:34AM +0530, Amit Daniel Kachhap wrote:
> >>A per vcpu flag is added to check if pointer authentication is
On Wed, Apr 24, 2019 at 12:32:22PM +0530, Amit Daniel Kachhap wrote:
> Hi,
>
> On 4/23/19 9:16 PM, Dave Martin wrote:
> >On Tue, Apr 23, 2019 at 10:12:38AM +0530, Amit Daniel Kachhap wrote:
> >>This patch adds a runtime capabality for KVM tool to enable Arm64 8.3
&g
On Wed, Apr 24, 2019 at 11:29:37AM +0100, Marc Zyngier wrote:
> On 23/04/2019 16:44, Dave Martin wrote:
> > On Tue, Apr 23, 2019 at 03:54:32PM +0530, Amit Daniel Kachhap wrote:
> >> Hi Mark,
> >>
> >> On 4/23/19 3:09 PM, Marc Zyngier wrote:
> >>>
this before, but this error message no longer makes
sense now that KVM _does_ support pointer auth.
Without vcpu_has_ptrauth(vcpu), we should just silently mask out the
relevant ID fields now (same as for SVE).
The patch below should achieve that.
--8<--
>From c6065122c5cccef57108dff990ce8fb43426f88e Mon Sep 17 00:00:00
macros defined in the headers are not in sync and should be replaced
> from the upstream.
>
> Signed-off-by: Amit Daniel Kachhap
> ---
>
> Changes since v9:
> * Added a error check for both enable-ptrauth and disable-ptrauth
> option.
> * Make the error explicit when en
s.
>
> Signed-off-by: Amit Daniel Kachhap
> Cc: Mark Rutland
> Cc: Marc Zyngier
> Cc: Christoffer Dall
> Cc: kvmarm@lists.cs.columbia.edu
> ---
> Changes since v9:
> * Fixed tab alignment issues [Dave Martin].
> * Clarify the api documentation [D
o adds a helper to check the flag.
>
> Reviewed-by: Dave Martin
> Signed-off-by: Amit Daniel Kachhap
> Cc: Mark Rutland
> Cc: Marc Zyngier
> Cc: Christoffer Dall
> Cc: kvmarm@lists.cs.columbia.edu
> ---
> Changes since v9:
>
> * Added ptrauth cpufeature static chec
On Tue, Apr 23, 2019 at 03:54:32PM +0530, Amit Daniel Kachhap wrote:
> Hi Mark,
>
> On 4/23/19 3:09 PM, Marc Zyngier wrote:
> >On Tue, 23 Apr 2019 05:42:35 +0100,
> >Amit Daniel Kachhap wrote:
> >>
> >>From: Mark Rutland
> >>
> >>When pointer authentication is supported, a guest may wish to use
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
Documentation/virtual/kvm/api.txt | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/Documentation/virtual/kvm/api.txt
b/Documentation/virtual/kvm/api.txt
index 03df379..5519df0 100644
--- a/Documentation/virtual/kvm
-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
Documentation/virtual/kvm/api.txt | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/Documentation/virtual/kvm/api.txt
b/Documentation/virtual/kvm/api.txt
index 818ac97..e410a9f 100644
--- a/Documentation/virtual/kvm/api.txt
of the API
in this instance.
No functional change.
Suggested-by: Andrew Jones
Fixes: 395f562f2b4c ("KVM: Document errors for KVM_GET_ONE_REG and
KVM_SET_ONE_REG")
Fixes: 50036ad06b7f ("KVM: arm64/sve: Document KVM API extensions for SVE")
Signed-off-by: Dave Martin
Revie
the compiler
make the right optimisation decisions, this patch adds WARN_ON()
for these cases.
Given the way the logic is spread out, this seems preferable to
dropping the checks altogether.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm64/kvm/sys_regs.c
.
No functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm64/kvm/guest.c | 18 +-
1 file changed, 5 insertions(+), 13 deletions(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 2e449e1..f5ff7ae 1006
at all to people who do not have detailed knowledge of
the SVE system-level architecture.
This patch adds a suitable comment to explain what these checks are
for.
No functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm64/kvm/guest.c | 7
functions.
No functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm/include/asm/kvm_host.h | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
to trigger, this patch marks
the check with WARN_ON().
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm64/kvm/guest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index e45a042..73044e3
VM: arm64/sve: Add pseudo-register for the guest's
vector lengths")
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm64/kvm/guest.c | 52 ++
1 file changed, 31 insertions(+), 21 deletions(-)
diff --git a
functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm/include/asm/kvm_host.h | 2 +-
arch/arm64/include/asm/kvm_host.h | 2 +-
arch/arm64/kvm/reset.c| 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arc
ister access ioctl
interface")
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm64/include/uapi/asm/kvm.h | 32 +++-
arch/arm64/kvm/guest.c| 9 +
2 files changed, 32 insertions(+), 9 deletions(-)
for these at present is manipulation of KVM_REG_ARM64_SVE_VLS,
no corresponding _VL_ macros are defined. They could be added
later if a need arises.
Since use of DIV_ROUND_UP() was the only reason for including
in guest.c, this patch also removes that #include.
Suggested-by: Andrew Jones
Signed-off-by: Dave
(),
retaining the arm stub version under the new name.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm/include/asm/kvm_host.h | 2 +-
arch/arm64/include/asm/kvm_host.h | 2 +-
arch/arm64/kvm/reset.c| 2 +-
virt/kvm/arm/arm.c| 2
-by: Dave Martin
Reviewed-by: Andrew Jones
---
arch/arm64/include/asm/fpsimd.h | 4
arch/arm64/kernel/fpsimd.c | 7 ++-
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index ad6d2e4..df62bbd 100644
with qemu and kvmtool on ThunderX2, and with kvmtool on the Arm
Fast model (to exercise SVE support).
Some additional manual testing was done to exercise the updated error
behaviours when accessing the SVE registers via ioctl.
Dave Martin (14):
arm64/sve: Clarify vq map semantics
KVM: arm/arm
On Wed, Apr 17, 2019 at 04:54:32PM +0100, Marc Zyngier wrote:
> On 17/04/2019 15:52, Dave Martin wrote:
> > On Wed, Apr 17, 2019 at 03:19:11PM +0100, Marc Zyngier wrote:
> >> On 17/04/2019 14:08, Amit Daniel Kachhap wrote:
> >>> Hi,
> >>>
> >>>
On Wed, Apr 17, 2019 at 06:06:11PM +0530, Amit Daniel Kachhap wrote:
> Hi,
>
> On 4/16/19 10:02 PM, Dave Martin wrote:
> >On Fri, Apr 12, 2019 at 08:50:36AM +0530, Amit Daniel Kachhap wrote:
> >>This patch adds a runtime capabality for KVM tool to enable Arm64 8.3
&g
On Wed, Apr 17, 2019 at 03:09:02PM +0530, Amit Daniel Kachhap wrote:
> Hi,
>
> On 4/16/19 10:02 PM, Dave Martin wrote:
> >On Fri, Apr 12, 2019 at 08:50:35AM +0530, Amit Daniel Kachhap wrote:
> >>This patch advertises the capability of two cpu feature called address
&g
gt;
> >>> Signed-off-by: Amit Daniel Kachhap
> >>> Cc: Mark Rutland
> >>> Cc: Marc Zyngier
> >>> Cc: Christoffer Dall
> >>> Cc: kvmarm@lists.cs.columbia.edu
> >>> ---
> >>>
> >>> Changes since v8:
> >&g
On Wed, Apr 17, 2019 at 06:16:56AM +0200, Andrew Jones wrote:
> On Tue, Apr 16, 2019 at 04:52:28PM +0100, Dave Martin wrote:
> > On Tue, Apr 16, 2019 at 04:28:31PM +0200, Andrew Jones wrote:
> > > On Tue, Apr 16, 2019 at 03:10:55PM +0100, Dave Martin wrote:
> >
> >
macros defined in the headers are not in sync and should be replaced
> from the upstream.
>
> Signed-off-by: Amit Daniel Kachhap
> ---
> Changes since v8:
> * Added option --enable-ptrauth and --disable-ptrauth to use ptrauth. Also
>enable ptrauth if no option provided and Ho
s.
>
> Signed-off-by: Amit Daniel Kachhap
> Cc: Mark Rutland
> Cc: Marc Zyngier
> Cc: Christoffer Dall
> Cc: kvmarm@lists.cs.columbia.edu
> ---
> Changes since v8:
> * Keep the capability check same for the 2 vcpu ptrauth features. [Dave
> Martin]
>
> Doc
the changes done.
>
> Signed-off-by: Amit Daniel Kachhap
> Cc: Mark Rutland
> Cc: Marc Zyngier
> Cc: Christoffer Dall
> Cc: kvmarm@lists.cs.columbia.edu
> ---
>
> Changes since v8:
> * Update vcpu->arch.flags to final enable state. [Dave Martin]
> * Change in
o adds a helper to check the flag.
>
> Signed-off-by: Amit Daniel Kachhap
> Cc: Mark Rutland
> Cc: Marc Zyngier
> Cc: Christoffer Dall
> Cc: kvmarm@lists.cs.columbia.edu
Reviewed-by: Dave Martin
> ---
>
> Changes since v8:
> * Added a new per vcpu flag which will s
On Tue, Apr 16, 2019 at 04:28:31PM +0200, Andrew Jones wrote:
> On Tue, Apr 16, 2019 at 03:10:55PM +0100, Dave Martin wrote:
[...]
> > arch/arm64/include/uapi/asm/kvm.h:
> >
> > #include /* which we already have anyway */
> >
> > #define KVM_ARM64_SV
On Tue, Apr 16, 2019 at 04:28:31PM +0200, Andrew Jones wrote:
> On Tue, Apr 16, 2019 at 03:10:55PM +0100, Dave Martin wrote:
> > On Tue, Apr 16, 2019 at 03:00:54PM +0200, Andrew Jones wrote:
> > > On Tue, Apr 16, 2019 at 01:41:42PM +0100, Dave Martin wrote:
> > > >
On Tue, Apr 16, 2019 at 03:00:54PM +0200, Andrew Jones wrote:
> On Tue, Apr 16, 2019 at 01:41:42PM +0100, Dave Martin wrote:
> > On Mon, Apr 15, 2019 at 05:20:37PM +0200, Andrew Jones wrote:
> > > On Fri, Apr 12, 2019 at 05:28:13PM +0100, Dave Martin wrote:
> > > &
On Mon, Apr 15, 2019 at 05:22:13PM +0200, Andrew Jones wrote:
> On Fri, Apr 12, 2019 at 05:28:04PM +0100, Dave Martin wrote:
> > This series contains some cleanups applicable to the SVE KVM support
> > patches merged into kvmarm/next. These arose from Andrew Jones'
> > review
On Mon, Apr 15, 2019 at 05:21:32PM +0200, Andrew Jones wrote:
> On Fri, Apr 12, 2019 at 05:28:17PM +0100, Dave Martin wrote:
> > The current error code documentation for KVM_GET_ONE_REG and
> > KVM_SET_ONE_REG could be read as implying that all architectures
> > implem
On Mon, Apr 15, 2019 at 05:20:37PM +0200, Andrew Jones wrote:
> On Fri, Apr 12, 2019 at 05:28:13PM +0100, Dave Martin wrote:
> > A complicated DIV_ROUND_UP() expression is currently written out
> > explicitly in multiple places in order to specify the size of the
>
On Mon, Apr 15, 2019 at 05:17:39PM +0200, Andrew Jones wrote:
> On Fri, Apr 12, 2019 at 05:28:09PM +0100, Dave Martin wrote:
> > Currently, the SVE register ID macros are not all defined in the
> > same way, and advertise the fact that FFR maps onto the nonexistent
> > p
of the API
in this instance.
No functional change.
Suggested-by: Andrew Jones
Fixes: 395f562f2b4c ("KVM: Document errors for KVM_GET_ONE_REG and
KVM_SET_ONE_REG")
Fixes: 50036ad06b7f ("KVM: arm64/sve: Document KVM API extensions for SVE")
Signed-off-by: Dave Martin
---
D
-off-by: Dave Martin
---
Documentation/virtual/kvm/api.txt | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/Documentation/virtual/kvm/api.txt
b/Documentation/virtual/kvm/api.txt
index 74c51c7..91cb12a 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation/virtual
functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm/include/asm/kvm_host.h | 2 +-
arch/arm64/include/asm/kvm_host.h | 2 +-
arch/arm64/kvm/reset.c| 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/include/asm/kvm
Signed-off-by: Dave Martin
---
Documentation/virtual/kvm/api.txt | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/Documentation/virtual/kvm/api.txt
b/Documentation/virtual/kvm/api.txt
index 68509de..b115b23 100644
--- a/Documentation/virtual/kvm/api.txt
+++ b/Documentation
.
No functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm64/kvm/guest.c | 18 +-
1 file changed, 5 insertions(+), 13 deletions(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 2e449e1..f5ff7ae 100644
--- a/arch/arm64/kvm/g
pport to register access ioctl
interface")
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm64/include/uapi/asm/kvm.h | 32 +++-
arch/arm64/kvm/guest.c| 9 +
2 files changed, 32 insertions(+), 9 deletions(-)
diff --git a/arch/arm64/in
that #include.
No functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm64/kvm/guest.c | 9 +
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index 73044e3..f025a2f 100644
--- a/arch/arm64/kvm/guest.c
at all to people who do not have detailed knowledge of
the SVE system-level architecture.
This patch adds a suitable comment to explain what these checks are
for.
No functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm64/kvm/guest.c | 7 +++
1 file changed, 7
to trigger, this patch marks
the check with WARN_ON().
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm64/kvm/guest.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c
index e45a042..73044e3 100644
--- a/arch/arm64/kvm
VM: arm64/sve: Add pseudo-register for the guest's
vector lengths")
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm64/kvm/guest.c | 52 ++
1 file changed, 31 insertions(+), 21 deletions(-)
diff --git a/arch/arm64/kvm/guest.c b
-by: Dave Martin
---
arch/arm64/include/asm/fpsimd.h | 4
arch/arm64/kernel/fpsimd.c | 7 ++-
2 files changed, 6 insertions(+), 5 deletions(-)
diff --git a/arch/arm64/include/asm/fpsimd.h b/arch/arm64/include/asm/fpsimd.h
index ad6d2e4..df62bbd 100644
--- a/arch/arm64/include/asm
functions.
No functional change.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm/include/asm/kvm_host.h | 11 +--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index d956273..7feddac 100644
the compiler
make the right optimisation decisions, this patch adds WARN_ON()
for these cases.
Given the way the logic is spread out, this seems preferable to
dropping the checks altogether.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm64/kvm/sys_regs.c | 4 ++--
1 file changed, 2
(),
retaining the arm stub version under the new name.
Suggested-by: Andrew Jones
Signed-off-by: Dave Martin
---
arch/arm/include/asm/kvm_host.h | 2 +-
arch/arm64/include/asm/kvm_host.h | 2 +-
arch/arm64/kvm/reset.c| 2 +-
virt/kvm/arm/arm.c| 2 +-
4 files changed, 4
nux-dm.git sve-kvm-fixes/v1/head
http://linux-arm.org/git?p=linux-dm.git;a=shortlog;h=refs/heads/sve-kvm-fixes/v1/head
Dave Martin (14):
arm64/sve: Clarify vq map semantics
KVM: arm/arm64: Demote kvm_arm_init_arch_resources() to just set up
SVE
KVM: arm: Make vcpu finalization stubs i
On Fri, Apr 05, 2019 at 05:33:21PM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 01:54:13PM +0100, Dave Martin wrote:
[...]
> > If you think the above is enough for ABI documentation purposes, I will
> > aim to drop the following comment i
On Fri, Apr 05, 2019 at 05:41:31PM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 03:06:40PM +0100, Dave Martin wrote:
[...]
> > Clearing KVM_ARM64_GUEST_HAS_SVE could be done on finalization failure;
> > it just feels a bit weird.
>
> Let's leave it. It's safe no
On Fri, Apr 05, 2019 at 05:38:04PM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 02:00:07PM +0100, Dave Martin wrote:
> > On Fri, Apr 05, 2019 at 12:39:37PM +0200, Andrew Jones wrote:
> > > On Fri, Apr 05, 2019 at 10:36:17AM +0100, Dave Martin wrote:
> > > >
On Fri, Mar 29, 2019 at 01:00:25PM +, Dave Martin wrote:
> This series implements support for allowing KVM guests to use the Arm
> Scalable Vector Extension (SVE), superseding the previous v6 series [1].
[...]
FYI, I'm working on a series of minor fixups based on Andrew's comments
w
On Fri, Apr 05, 2019 at 12:22:04PM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 10:36:10AM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 10:31:09PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:48PM +, Dave Martin wrote:
> > > >
On Fri, Apr 05, 2019 at 12:39:37PM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 10:36:17AM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 11:09:21PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:52PM +, Dave Martin wrote:
> > >
On Fri, Apr 05, 2019 at 12:14:51PM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 10:36:03AM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 10:18:54PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:48PM +, Dave Martin wrote:
> > > >
On Fri, Apr 05, 2019 at 12:40:57PM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 10:36:24AM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 06:33:08PM +0200, Andrew Jones wrote:
> > > On Thu, Apr 04, 2019 at 03:53:55PM +0100, Dave Martin wrote:
> > > >
On Fri, Apr 05, 2019 at 11:54:07AM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 10:35:55AM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 04:20:34PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:45PM +, Dave Martin wrote:
> > > >
On Fri, Apr 05, 2019 at 11:45:56AM +0200, Andrew Jones wrote:
> On Fri, Apr 05, 2019 at 10:35:45AM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 04:08:32PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:44PM +, Dave Martin wrote:
> > > &g
On Tue, Apr 02, 2019 at 07:57:17AM +0530, Amit Daniel Kachhap wrote:
> This is a runtime capabality for KVM tool to enable Arm64 8.3 Pointer
> Authentication in guest kernel. Two vcpu features
> KVM_ARM_VCPU_PTRAUTH_[ADDRESS/GENERIC] are supplied together to enable
> Pointer Authentication in KVM
On Tue, Apr 02, 2019 at 07:57:16AM +0530, Amit Daniel Kachhap wrote:
> This patch advertises the capability of two cpu feature called address
> pointer authentication and generic pointer authentication. These
> capabilities depend upon system support for pointer authentication and
> VHE mode.
>
>
if (!has_vhe())
> return;
>
> - deactivate_traps_vhe_put();
> + deactivate_traps_vhe_put(vcpu);
>
> __sysreg_save_el1_state(guest_ctxt);
> __sysreg_save_user_state(guest_ctxt);
> @@ -333,4 +333,10 @@ void __hyp_text __kvm_populate_host_
ddr;\
> + asm("adrp %0, %1\n" \
> + "add%0, %0, :lo12:%1\n" \
> + : "=r" (addr) : "S" ());
On Tue, Apr 02, 2019 at 07:57:12AM +0530, Amit Daniel Kachhap wrote:
> From: Mark Rutland
>
> When restoring HCR_EL2 for the host, KVM uses HCR_HOST_VHE_FLAGS, which
> is a constant value. This works today, as the host HCR_EL2 value is
> always the same, but this will get in the way of
On Tue, Apr 02, 2019 at 07:57:14AM +0530, Amit Daniel Kachhap wrote:
> Since Pointer authentication will be enabled or disabled on a
> per-vcpu basis, vcpu feature flags are added in order to know which
> vcpus have it enabled from userspace.
>
> This features will allow the KVM guest to allow
On Thu, Apr 04, 2019 at 11:09:21PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:52PM +0000, Dave Martin wrote:
> > This patch adds sections to the KVM API documentation describing
> > the extensions for supporting the Scalable Vector Extension (SVE)
> > in guests
On Thu, Apr 04, 2019 at 06:33:08PM +0200, Andrew Jones wrote:
> On Thu, Apr 04, 2019 at 03:53:55PM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 04:25:28PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:46PM +, Dave Martin wrote:
[...]
> > &
On Thu, Apr 04, 2019 at 10:31:09PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:48PM +0000, Dave Martin wrote:
> > This patch adds a new pseudo-register KVM_REG_ARM64_SVE_VLS to
> > allow userspace to set and query the set of vector lengths visible
&
On Thu, Apr 04, 2019 at 10:18:54PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:48PM +0000, Dave Martin wrote:
> > This patch adds a new pseudo-register KVM_REG_ARM64_SVE_VLS to
> > allow userspace to set and query the set of vector lengths visible
&
On Thu, Apr 04, 2019 at 04:08:32PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:44PM +0000, Dave Martin wrote:
> > This patch includes the SVE register IDs in the list returned by
> > KVM_GET_REG_LIST, as appropriate.
> >
> > On a non-SVE-enabled
On Thu, Apr 04, 2019 at 04:20:34PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:45PM +0000, Dave Martin wrote:
> > KVM will need to interrogate the set of SVE vector lengths
> > available on the system.
> >
> > This patch exposes the relevan
On Thu, Apr 04, 2019 at 11:21:04PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:32PM +0000, Dave Martin wrote:
> > Due to the way the effective SVE vector length is controlled and
> > trapped at different exception levels, certain mismatches in the
> > s
On Thu, Apr 04, 2019 at 06:25:39PM +0200, Andrew Jones wrote:
> On Thu, Apr 04, 2019 at 03:50:56PM +0100, Dave Martin wrote:
> > On Thu, Apr 04, 2019 at 03:57:06PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:43PM +, Dave Martin wrote:
> > > >
On Thu, Apr 04, 2019 at 05:07:09PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:47PM +0000, Dave Martin wrote:
> > Some aspects of vcpu configuration may be too complex to be
> > completed inside KVM_ARM_VCPU_INIT. Thus, there may be a
> > requirement for
On Thu, Apr 04, 2019 at 04:25:28PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:46PM +0000, Dave Martin wrote:
> > This patch adds a kvm_arm_init_arch_resources() hook to perform
> > subarch-specific initialisation when starting up KVM.
> >
> > This w
On Thu, Apr 04, 2019 at 03:57:06PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:43PM +0000, Dave Martin wrote:
> > This patch adds the following registers for access via the
> > KVM_{GET,SET}_ONE_REG interface:
> >
> > * KVM_REG_ARM64_SVE_ZREG(n, i) (n =
On Thu, Apr 04, 2019 at 10:32:18AM +0200, Andrew Jones wrote:
> On Thu, Apr 04, 2019 at 09:06:58AM +0100, Dave Martin wrote:
> > On Wed, Apr 03, 2019 at 09:39:43PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:37PM +, Dave Martin wrote:
[...]
&
On Thu, Apr 04, 2019 at 10:35:02AM +0200, Andrew Jones wrote:
> On Thu, Apr 04, 2019 at 09:10:08AM +0100, Dave Martin wrote:
> > On Wed, Apr 03, 2019 at 10:01:45PM +0200, Andrew Jones wrote:
> > > On Fri, Mar 29, 2019 at 01:00:38PM +, Dave Martin wrote:
> > > >
On Wed, Apr 03, 2019 at 10:01:45PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:38PM +0000, Dave Martin wrote:
> > In order to give each vcpu its own view of the SVE registers, this
> > patch adds context storage via a new sve_state pointer in struct
> > vcpu
On Wed, Apr 03, 2019 at 09:39:43PM +0200, Andrew Jones wrote:
> On Fri, Mar 29, 2019 at 01:00:37PM +0000, Dave Martin wrote:
> > This patch adds the necessary support for context switching ZCR_EL1
> > for each vcpu.
> >
> > ZCR_EL1 is trapped alongside the FPSIMD
On Thu, Apr 04, 2019 at 04:17:24AM +0100, Marc Zyngier wrote:
> On Wed, 03 Apr 2019 20:14:13 +0100,
> Andrew Jones wrote:
> >
> > On Fri, Mar 29, 2019 at 01:00:34PM +, Dave Martin wrote:
> > > Since SVE will be enabled or disabled on a per-vcpu basis, a flag
> &
.
Cc: sta...@vger.kernel.org
Fixes: d26c25a9d19b ("arm64: KVM: Tighten guest core register access from
userspace")
Signed-off-by: Dave Martin
---
Tested by hacking kvmtool to dump the register list and eyballing the
results, both with and without this patch, and with and without SVE.
Qemu test
On Tue, Apr 02, 2019 at 03:41:56AM +0100, Marc Zyngier wrote:
> On Fri, 29 Mar 2019 13:00:41 +,
> Dave Martin wrote:
> >
> > In preparation for adding logic to filter out some KVM_REG_ARM_CORE
> > registers from the KVM_GET_REG_LIST output, this patch factors o
On Fri, Mar 29, 2019 at 02:56:36PM +, Marc Zyngier wrote:
> Hi Dave,
>
> On 29/03/2019 13:00, Dave Martin wrote:
> > This series implements support for allowing KVM guests to use the Arm
> > Scalable Vector Extension (SVE), superseding the previous v6 series [1].
> >
This patch adds sections to the KVM API documentation describing
the extensions for supporting the Scalable Vector Extension (SVE)
in guests.
Signed-off-by: Dave Martin
---
Changes since v5:
* Document KVM_ARM_VCPU_FINALIZE and its interactions with SVE.
---
Documentation/virtual/kvm
arch/arm64/kvm/guest.c uses the string functions, but the
corresponding header is not included.
We seem to get away with this for now, but for completeness this
patch adds the #include, in preparation for adding yet more
memset() calls.
Signed-off-by: Dave Martin
Tested-by: zhang.lei
---
arch
hiding register where appropriate.
Signed-off-by: Dave Martin
Tested-by: zhang.lei
---
Changes since v5:
* Rename the visibility override flags, add some comments, and rename/
introduce helpers to make the purpose of this code clearer.
---
arch/arm64/kvm/sys_regs.c | 24
state. This avoids some complex and pointless emulation
in the kernel to convert between the two views of these aliased
registers.
Signed-off-by: Dave Martin
Reviewed-by: Julien Thierry
Tested-by: zhang.lei
---
Changes since v5:
* [Julien Thierry] rename sve_reg_region() to sve_reg_to_region
kvm_host.h uses some declarations from other headers that are
currently included by accident, without an explicit #include.
This patch adds a few #includes that are clearly missing. Although
the header builds without them today, this should help to avoid
future surprises.
Signed-off-by: Dave
To provide a uniform way to check for KVM SVE support amongst other
features, this patch adds a suitable capability KVM_CAP_ARM_SVE,
and reports it as present when SVE is available.
Signed-off-by: Dave Martin
Reviewed-by: Julien Thierry
Tested-by: zhang.lei
---
Changes since v5:
* [Julien
nit to work this out, in the
kvm_arm_init_arch_resources() hook.
The KVM_REG_ARM64_SVE_VLS pseudo-register is not exposed yet.
Subsequent patches will allow SVE to be turned on for guest vcpus,
making it visible.
Signed-off-by: Dave Martin
Reviewed-by: Julien Thierry
Tested-by: zhang.
outside
these functions: now that these are exposed outside fpsimd.c, they
are prefixed with __ in order to provide an extra hint that they
are not intended for general-purpose use.
Signed-off-by: Dave Martin
Reviewed-by: Alex Bennée
Tested-by: zhang.lei
---
arch/arm64/include/asm/fpsimd.h | 29
e() anyway.
Signed-off-by: Dave Martin
Reviewed-by: Alex Bennée
Reviewed-by: Julien Grall
Tested-by: zhang.lei
---
arch/arm64/kernel/fpsimd.c | 25 +++--
arch/arm64/kernel/signal.c | 5 -
2 files changed, 19 insertions(+), 11 deletions(-)
diff --git a/arch/arm64/kernel/fpsim
101 - 200 of 976 matches
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