On Tue, 2020-12-01 at 16:40 -0800, Ankur Arora wrote:
> > How come we get to pin the page and directly dereference it every time,
> > while kvm_setup_pvclock_page() has to use kvm_write_guest_cached()
> > instead?
>
> So looking at my WIP trees from the time, this is something that
> we went back
On Thu, Dec 03, 2020, David Woodhouse wrote:
> On Wed, 2020-12-02 at 12:32 -0800, Ankur Arora wrote:
> > > On IRC, Paolo told me that permanent pinning causes problems for memory
> > > hotplug, and pointed me at the trick we do with an MMU notifier and
> > > kvm_vcpu_reload_apic_access_page().
> >
On Wed, 2020-12-02 at 12:32 -0800, Ankur Arora wrote:
> > On IRC, Paolo told me that permanent pinning causes problems for memory
> > hotplug, and pointed me at the trick we do with an MMU notifier and
> > kvm_vcpu_reload_apic_access_page().
>
> Okay that answers my question. Thanks for clearing
On 2020-12-02 2:44 a.m., Joao Martins wrote:
[late response - was on holiday yesterday]
On 12/2/20 12:40 AM, Ankur Arora wrote:
On 2020-12-01 5:07 a.m., David Woodhouse wrote:
On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
+static int kvm_xen_shared_info_init(struct kvm *kvm, gfn_t
On 2020-12-02 4:20 a.m., David Woodhouse wrote:
On Wed, 2020-12-02 at 10:44 +, Joao Martins wrote:
[late response - was on holiday yesterday]
On 12/2/20 12:40 AM, Ankur Arora wrote:
On 2020-12-01 5:07 a.m., David Woodhouse wrote:
On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
On Wed, 2020-12-02 at 10:44 +, Joao Martins wrote:
> [late response - was on holiday yesterday]
>
> On 12/2/20 12:40 AM, Ankur Arora wrote:
> > On 2020-12-01 5:07 a.m., David Woodhouse wrote:
> > > On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
> > > > +static int
On 12/2/20 5:17 AM, Ankur Arora wrote:
> On 2020-12-01 5:26 p.m., David Woodhouse wrote
>> On Tue, 2020-12-01 at 16:40 -0800, Ankur Arora wrote:
>>> On 2020-12-01 5:07 a.m., David Woodhouse wrote:
[...]
If that was allowed, wouldn't it have been a much simpler fix for
CVE-2019-3016?
[late response - was on holiday yesterday]
On 12/2/20 12:40 AM, Ankur Arora wrote:
> On 2020-12-01 5:07 a.m., David Woodhouse wrote:
>> On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
>>> +static int kvm_xen_shared_info_init(struct kvm *kvm, gfn_t gfn)
>>> +{
>>> + struct shared_info
On 2020-12-01 5:26 p.m., David Woodhouse wrote
On Tue, 2020-12-01 at 16:40 -0800, Ankur Arora wrote:
On 2020-12-01 5:07 a.m., David Woodhouse wrote:
On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
+static int kvm_xen_shared_info_init(struct kvm *kvm, gfn_t gfn)
+{
+ struct
On Tue, 2020-12-01 at 16:40 -0800, Ankur Arora wrote:
> On 2020-12-01 5:07 a.m., David Woodhouse wrote:
> > On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
> > > +static int kvm_xen_shared_info_init(struct kvm *kvm, gfn_t gfn)
> > > +{
> > > + struct shared_info *shared_info;
> > > +
On 2020-12-01 5:07 a.m., David Woodhouse wrote:
On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
+static int kvm_xen_shared_info_init(struct kvm *kvm, gfn_t gfn)
+{
+ struct shared_info *shared_info;
+ struct page *page;
+
+ page = gfn_to_page(kvm, gfn);
+ if
On Wed, 2019-02-20 at 20:15 +, Joao Martins wrote:
> +static int kvm_xen_shared_info_init(struct kvm *kvm, gfn_t gfn)
> +{
> + struct shared_info *shared_info;
> + struct page *page;
> +
> + page = gfn_to_page(kvm, gfn);
> + if (is_error_page(page))
> +
We add a new ioctl, XEN_HVM_SHARED_INFO, to allow hypervisor
to know where the guest's shared info page is.
Signed-off-by: Joao Martins
---
arch/x86/include/asm/kvm_host.h | 3 +++
arch/x86/kvm/x86.c | 21 +++
arch/x86/kvm/xen.c | 60
13 matches
Mail list logo
