Now that kvm_hv_flush_tlb() has been patched to support XMM hypercall
inputs, we can start advertising this feature to guests.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/include/asm/hyperv-tlfs.h | 7 ++-
arch/x86/kvm/hyperv.c
into a single structure.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/hyperv.c | 147 +++---
1 file changed, 79 insertions(+), 68 deletions(-)
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index
-developed-by: Evgeny Iakovlev
Signed-off-by: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/include/asm/hyperv-tlfs.h | 2 +
arch/x86/kvm/hyperv.c | 90 +++---
2 files changed, 73 insertions(+), 19 deletions(-)
diff --git a/arch/x86
more readable.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/emulate.c | 137 +---
arch/x86/kvm/fpu.h | 140 +
arch/x86/kvm/kvm_emulate.h | 3 +-
3 files changed
for kvm_hv_hypercall_{read,write}_xmm()
- Fix typo: s/ouput/output/
- Remove sse128_t from kvm_emulate.h
- Reword comment to match TLFS wording
- Move num XMM registers macro to hyperv-tlfs.h
- Stop advertising HV_X64_HYPERCALL_XMM_OUTPUT_AVAILABLE
Siddharth Chandrasekaran (4):
KVM: x86: Move FPU
On Tue, Apr 13, 2021 at 04:09:48PM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran writes:
> > Hyper-V supports the use of XMM registers to perform fast hypercalls.
> > This allows guests to take advantage of the improved performance of the
> > fast hypercall
On Tue, Apr 13, 2021 at 03:53:01PM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran writes:
> > As of now there are 7 parameters (and flags) that are used in various
> > hyper-v hypercall handlers. There are 6 more input/output parameters
> > passed fro
On Tue, Apr 13, 2021 at 03:40:56PM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran writes:
> > @@ -0,0 +1,140 @@
> > +/* SPDX-License-Identifier: GPL-2.0 */
> > +
> > +#ifndef __KVM_FPU_H_
> > +#define __KVM_FPU_H_
> > +
> > +#include
On Mon, Apr 12, 2021 at 08:14:23PM +, Wei Liu wrote:
> On Mon, Apr 12, 2021 at 07:00:17PM +0200, Siddharth Chandrasekaran wrote:
> > Now that all extant hypercalls that can use XMM registers (based on
> > spec) for input/outputs are patched to support them, we can start
On Mon, Apr 12, 2021 at 08:13:19PM +, Wei Liu wrote:
> On Mon, Apr 12, 2021 at 07:00:16PM +0200, Siddharth Chandrasekaran wrote:
> > +
> > +static inline void kvm_hv_hypercall_read_xmm(struct kvm_hv_hcall *hc)
>
> Do you really need inline here? The compiler should be sma
in kvm_hv_hypercall() and
use the additional hypercall inputs from XMM registers in
kvm_hv_flush_tlb() when possible.
Cc: Alexander Graf
Co-developed-by: Evgeny Iakovlev
Signed-off-by: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/hyperv.c | 109
Now that all extant hypercalls that can use XMM registers (based on
spec) for input/outputs are patched to support them, we can start
advertising this feature to guests.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/include/asm/hyperv-tlfs.h | 7
.
v2:
- Add hc.fast to is_xmm_fast_hypercall() check
- Split CPUID feature bits for input and output
Siddharth Chandrasekaran (4):
KVM: x86: Move FPU register accessors into fpu.h
KVM: hyper-v: Collect hypercall params into struct
KVM: x86: kvm_hv_flush_tlb use inputs from XMM registers
into a single structure.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/hyperv.c | 147 +++---
1 file changed, 79 insertions(+), 68 deletions(-)
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index
more readable.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/emulate.c | 138 ++--
arch/x86/kvm/fpu.h | 140 +
2 files changed, 158 insertions(+), 120 deletions
On Thu, Apr 08, 2021 at 04:44:23PM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran writes:
> > On Thu, Apr 08, 2021 at 02:05:53PM +0200, Vitaly Kuznetsov wrote:
> >> Siddharth Chandrasekaran writes:
> >> > Now that all extant hypercalls that can use XMM r
On Fri, Apr 09, 2021 at 09:42:41AM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran writes:
> > On Thu, Apr 08, 2021 at 04:30:18PM +, Wei Liu wrote:
> >> On Thu, Apr 08, 2021 at 05:54:43PM +0200, Siddharth Chandrasekaran wrote:
> >> > On Thu, Apr 08, 2
On Fri, Apr 09, 2021 at 09:38:03AM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran writes:
> > On Thu, Apr 08, 2021 at 04:44:23PM +0200, Vitaly Kuznetsov wrote:
> >> Siddharth Chandrasekaran writes:
> >> > On Thu, Apr 08, 2021 at 02:05:53PM
On Thu, Apr 08, 2021 at 04:30:18PM +, Wei Liu wrote:
> On Thu, Apr 08, 2021 at 05:54:43PM +0200, Siddharth Chandrasekaran wrote:
> > On Thu, Apr 08, 2021 at 05:48:19PM +0200, Paolo Bonzini wrote:
> > > On 08/04/21 17:40, Siddharth Chandrasekaran wrote:
> > > > &
On Thu, Apr 08, 2021 at 03:38:13PM +, Wei Liu wrote:
> On Thu, Apr 08, 2021 at 05:30:26PM +0200, Paolo Bonzini wrote:
> > On 08/04/21 17:28, Wei Liu wrote:
> > > > Although the Hyper-v TLFS mentions that a guest cannot use this feature
> > > > unless the hypervisor advertises support for it,
54PM +0200, Siddharth Chandrasekaran wrote:
> > On Thu, Apr 08, 2021 at 02:05:53PM +0200, Vitaly Kuznetsov wrote:
> > > Siddharth Chandrasekaran writes:
> > >
> > > > Now that all extant hypercalls that can use XMM registers (based on
> > > &
On Thu, Apr 08, 2021 at 05:48:19PM +0200, Paolo Bonzini wrote:
> On 08/04/21 17:40, Siddharth Chandrasekaran wrote:
> > > > > Although the Hyper-v TLFS mentions that a guest cannot use this
> > > > > feature
> > > > > unless the hypervisor
On Thu, Apr 08, 2021 at 04:44:23PM +0200, Vitaly Kuznetsov wrote:
> CAUTION: This email originated from outside of the organization. Do not click
> links or open attachments unless you can confirm the sender and know the
> content is safe.
>
>
>
> Siddharth Chandrasekaran
On Thu, Apr 08, 2021 at 05:30:26PM +0200, Paolo Bonzini wrote:
> CAUTION: This email originated from outside of the organization. Do not click
> links or open attachments unless you can confirm the sender and know the
> content is safe.
>
>
>
> On 08/04/21 17:28, Wei Liu wrote:
> > > Although
On Thu, Apr 08, 2021 at 02:05:53PM +0200, Vitaly Kuznetsov wrote:
> Siddharth Chandrasekaran writes:
>
> > Now that all extant hypercalls that can use XMM registers (based on
> > spec) for input/outputs are patched to support them, we can start
> > advertising this featu
.
Siddharth Chandrasekaran (4):
KVM: x86: Move FPU register accessors into fpu.h
KVM: hyper-v: Collect hypercall params into struct
KVM: x86: kvm_hv_flush_tlb use inputs from XMM registers
KVM: hyper-v: Advertise support for fast XMM hypercalls
arch/x86/include/asm/hyperv-tlfs.h | 4
Now that all extant hypercalls that can use XMM registers (based on
spec) for input/outputs are patched to support them, we can start
advertising this feature to guests.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/include/asm/hyperv-tlfs.h | 4
in kvm_hv_hypercall() and
use the additional hypercall inputs from XMM registers in
kvm_hv_flush_tlb() when possible.
Cc: Alexander Graf
Co-developed-by: Evgeny Iakovlev
Signed-off-by: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/hyperv.c | 109
into a single structure.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/hyperv.c | 147 +++---
1 file changed, 79 insertions(+), 68 deletions(-)
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c
index
more readable.
Cc: Alexander Graf
Cc: Evgeny Iakovlev
Signed-off-by: Siddharth Chandrasekaran
---
arch/x86/kvm/emulate.c | 138 ++--
arch/x86/kvm/fpu.h | 140 +
2 files changed, 158 insertions(+), 120 deletions
Building kvm module out-of-source with,
make -C $SRC O=$BIN M=arch/x86/kvm
fails to find "irq.h" as the include dir passed to cflags-y does not
prefix the source dir. Fix this by prefixing $(srctree) to the include
dir path.
Signed-off-by: Siddharth Chandrasekaran
---
ar
On Fri, May 15, 2020 at 02:57:01PM +0200, Greg KH wrote:
> On Fri, May 15, 2020 at 06:19:45PM +0530, Siddharth Chandrasekaran wrote:
> > Please ignore this patch set, I accidentally added another patch I was
> > working on. Will send v2 with the right patches.
>
> What patc
Hello,
Lack of proper validation that cached inodes are free during allocation can,
cause a crash in fs/xfs/xfs_icache.c (refer: CVE-2018-13093). To address this
issue, I'm backporting upstream commit [1] to 4.4 and 4.9 stable trees
(a backport of [1] to 4.14 already exists).
Also, commit [1]
ino
Reviewed-by: Darrick J. Wong
[darrick: fix typos in comment]
Signed-off-by: Darrick J. Wong
Signed-off-by: Siddharth Chandrasekaran
---
fs/xfs/xfs_icache.c | 57 ++---
1 file changed, 50 insertions(+), 7 deletions(-)
diff --git a/fs/xfs/xfs_icac
ino
Reviewed-by: Darrick J. Wong
[darrick: fix typos in comment]
Signed-off-by: Darrick J. Wong
Signed-off-by: Siddharth Chandrasekaran
---
fs/xfs/xfs_icache.c | 57 ++---
1 file changed, 50 insertions(+), 7 deletions(-)
diff --git a/fs/xfs/xfs_icac
Please ignore this patch set, I accidentally added another patch I was
working on. Will send v2 with the right patches.
Thanks!
-- Sid.
ino
Reviewed-by: Darrick J. Wong
[darrick: fix typos in comment]
Signed-off-by: Darrick J. Wong
Signed-off-by: Siddharth Chandrasekaran
---
fs/xfs/xfs_icache.c | 57 ++---
1 file changed, 50 insertions(+), 7 deletions(-)
diff --git a/fs/xfs/xfs_icac
up compiler
warnings]
Signed-off-by: Darrick J. Wong
Signed-off-by: Siddharth Chandrasekaran
---
fs/xfs/libxfs/xfs_format.h| 3 ++
fs/xfs/libxfs/xfs_inode_buf.c | 112 --
2 files changed, 112 insertions(+), 3 deletions(-)
diff --git a/fs/xfs/libxfs
Due to lack of proper validation that cached inodes are free during allocation,
causes a crash (refer to CVE-2018-13093 for more details). To address this
issue, I'm backporting upstream commit [1] to 4.4 and 4.9 stable trees
(a backport of [1] to 4.14 already exists).
Also, commit [1] references
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