Fixes the following sparse warning:
arch/x86/kvm/x86.c:4492:5: warning: symbol 'kvm_emulate_wbinvd_noskip'
was not declared. Should it be static?
Signed-off-by: Geliang Tang
---
arch/x86/kvm/x86.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kvm/x86.c b/arch/x86/
On 09/25/2015 03:49 PM, Paolo Bonzini wrote:
On 24/09/2015 12:12, Borislav Petkov wrote:
On Thu, Sep 24, 2015 at 11:23:08AM +0800, Xiao Guangrong wrote:
+static inline bool
+boot_cpu_is_amd(void)
+{
+ WARN_ON_ONCE(!tdp_enabled);
+ return shadow_x_mask != 0;
shadow_x_mask != 0
tree: https://git.kernel.org/pub/scm/virt/kvm/kvm.git vtd-pi
head: 7690a83389ca993040950b6ed7b4b5efbd50a782
commit: 3d28100d4df3d7d70072d0d90195d75e9c4b0c48 [23/38] virt: Add virt
directory to the top Makefile
config: avr32-atngw100_defconfig (attached as .config)
reproduce:
wget
https://gi
When a vcpu is created in KVM, its TSC rate is initially identical to
the host TSC rate. If its state is migrated to a vcpu on another
machine (target machine) which may uses a different host TSC rate, QEMU
on the target machine should notice KVM of the migrated vcpu's TSC
rate. In case that KVM on
The newly added subsection 'vmstate_tsc_khz' in this patch results in
vcpu's TSC rate being saved on the source machine and loaded on the
target machine during the migration.
Signed-off-by: Haozhong Zhang
---
target-i386/machine.c | 20
1 file changed, 20 insertions(+)
diff
When creating a vcpu, we initialize its TSC rate to the value from
KVM (through ioctl KVM_GET_TSC_KHZ).
Signed-off-by: Haozhong Zhang
---
target-i386/kvm.c | 7 +++
1 file changed, 7 insertions(+)
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 7b0ba17..c2b161a 100644
--- a/target-
This patch makes kvm-intel to return a scaled host TSC plus the TSC
offset when handling guest readings to MSR_IA32_TSC.
Signed-off-by: Haozhong Zhang
---
arch/x86/kvm/vmx.c | 8
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index
This patch enhances dump_vmcs() to dump the value of TSC multiplier
field in VMCS.
Signed-off-by: Haozhong Zhang
---
arch/x86/kvm/vmx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index d0a2928..b19cdbe 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch
Both VMX and SVM scales the host TSC in the same way in call-back
read_l1_tsc(), so this patch moves the scaling logic from call-back
read_l1_tsc() to a common function kvm_read_l1_tsc().
Signed-off-by: Haozhong Zhang
---
arch/x86/kvm/lapic.c | 5 ++---
arch/x86/kvm/svm.c | 3 +--
ar
This patch makes kvm-intel module to load TSC scaling ratio into TSC
multiplier field of VMCS when a vcpu is loaded, so that TSC scaling
ratio can take effect if VMX TSC scaling is enabled.
Signed-off-by: Haozhong Zhang
---
arch/x86/kvm/vmx.c | 6 ++
1 file changed, 6 insertions(+)
diff --g
This patch exhances kvm-intel module to enable VMX TSC scaling and
collects information of TSC scaling ratio during initialization.
Signed-off-by: Haozhong Zhang
---
arch/x86/include/asm/vmx.h | 4 +++-
arch/x86/kvm/vmx.c | 20 +++-
2 files changed, 22 insertions(+), 2 d
Both VMX and SVM calculate the tsc-offset in the same way, so this
patch removes the call-back compute_tsc_offset() and replaces it with a
common function kvm_compute_tsc_offset().
Signed-off-by: Haozhong Zhang
---
arch/x86/include/asm/kvm_host.h | 1 -
arch/x86/kvm/svm.c | 10
VMX and SVM calculate the TSC scaling ratio in a similar logic, so this
patch generalizes it to a common TSC scaling function.
Signed-off-by: Haozhong Zhang
---
arch/x86/kvm/svm.c | 48 +++--
arch/x86/kvm/x86.c | 70
Both VMX and SVM propagate virtual_tsc_khz in the same way, so this
patch removes the call-back set_tsc_khz() and replaces it with a common
function.
Signed-off-by: Haozhong Zhang
---
arch/x86/include/asm/kvm_host.h | 1 -
arch/x86/kvm/svm.c | 36 ---
This patchset enables QEMU to save/restore vcpu's TSC rate during the
migration. When cooperating with KVM which supports TSC scaling, guest
programs can observe a consistent guest TSC rate even though they are
migrated among machines with different host TSC rates.
Haozhong Zhang (3):
target-i38
This patch makes KVM use virtual_tsc_khz rather than the host TSC rate
as vcpu's TSC rate to compute the time scale if TSC scaling is enabled.
Signed-off-by: Haozhong Zhang
---
arch/x86/kvm/x86.c | 6 --
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/arch/x86/kvm/x86.c b/arch/
For both VMX and SVM, if the 2nd argument of call-back
adjust_tsc_offset() is the host TSC, then adjust_tsc_offset() will scale
it first. This patch moves this common TSC scaling logic to its caller
adjust_tsc_offset_host().
Signed-off-by: Haozhong Zhang
---
arch/x86/include/asm/kvm_host.h | 13
The number of bits of the fractional part of the 64-bit TSC scaling
ratio in VMX and SVM is different. This patch makes the architecture
code to collect the number of fractional bits and other related
information into variables that can be accessed in the common code.
Signed-off-by: Haozhong Zhang
This patch moves the field of TSC scaling ratio from the architecture
struct vcpu_svm to the common struct kvm_vcpu_arch.
Signed-off-by: Haozhong Zhang
---
arch/x86/include/asm/kvm_host.h | 1 +
arch/x86/kvm/svm.c | 23 +--
arch/x86/kvm/x86.c | 3 +
This patchset adds support for VMX TSC scaling feature which is
available on Intel Skylake CPU. The specification of VMX TSC scaling
can be found at
http://www.intel.com/content/www/us/en/processors/timestamp-counter-scaling-virtualization-white-paper.html
VMX TSC scaling allows guest TSC which is
Hi Paolo,
[auto build test results on v4.3-rc2 -- if it's inappropriate base, please
ignore]
config: i386-randconfig-a0-201538 (attached as .config)
reproduce:
git checkout d88f2083643f6dfacba14b2e95217dc6e0a4be37
# save the attached .config to linux build tree
make ARCH=i386
All warning
On 15-09-25 11:27 AM, Paolo Bonzini wrote:
SCSI_REMOVAL_* goes together with other SCSI command constants in
include/scsi/scsi.h. It is also used outside the implementation
of the ioctls (and it is not part of the user API).
scsi_fctargaddress/Scsi_FCTargAddress has had no in-tree use since
com
On 15-09-25 11:27 AM, Paolo Bonzini wrote:
These will not be exported by the new linux/sg.h header, and scsi/sg.h will
not have any user API after linux/sg.h is created. Since they have no
user in the kernel, they can be zapped.
Cc: James Bottomley
Cc: Christoph Hellwig
Cc: linux-s...@vger.ke
On 15-09-25 11:27 AM, Paolo Bonzini wrote:
Provide a UAPI version of the header in the kernel, making it easier
for interested projects to use an up-to-date version of the header.
The new headers are placed under uapi/linux/ so as not to conflict
with the glibc-provided headers in /usr/include/s
On 15-09-25 11:27 AM, Paolo Bonzini wrote:
Some are in scsi.h. Keep them together in preparation for exposing them
in UAPI headers.
Cc: James Bottomley
Cc: Christoph Hellwig
Cc: linux-s...@vger.kernel.org
Reviewed-by: Bart Van Assche
Signed-off-by: Paolo Bonzini
Acked-by: Douglas Gilbert
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