Hi Sean,
On Fri May 19, 2023 at 6:23 PM UTC, Sean Christopherson wrote:
> On Fri, May 19, 2023, Nicolas Saenz Julienne wrote:
> > Hi,
> > On Fri Dec 2, 2022 at 6:13 AM UTC, Chao Peng wrote:
[...]
> > VSM introduces isolated guest execution contexts called Virtual Trust
> > Levels (VTL) [2].
Hi Sean,
On Fri May 19, 2023 at 6:23 PM UTC, Sean Christopherson wrote:
> On Fri, May 19, 2023, Nicolas Saenz Julienne wrote:
> > Hi,
> >
> > On Fri Dec 2, 2022 at 6:13 AM UTC, Chao Peng wrote:
> >
> > [...]
> > > +The user sets the per-page memory attributes to a guest memory range
> > >
Hi,
On Fri Dec 2, 2022 at 6:13 AM UTC, Chao Peng wrote:
[...]
> +4.138 KVM_GET_SUPPORTED_MEMORY_ATTRIBUTES
> +-
> +
> +:Capability: KVM_CAP_MEMORY_ATTRIBUTES
> +:Architectures: x86
> +:Type: vm ioctl
> +:Parameters: u64 memory attributes bitmask(out)
>
On Fri, May 19, 2023, Nicolas Saenz Julienne wrote:
> Hi Sean,
>
> On Fri May 19, 2023 at 6:23 PM UTC, Sean Christopherson wrote:
> > On Fri, May 19, 2023, Nicolas Saenz Julienne wrote:
> > > Hi,
> > >
> > > On Fri Dec 2, 2022 at 6:13 AM UTC, Chao Peng wrote:
> > >
> > > [...]
> > > > +The user
On Fri, May 19, 2023, Nicolas Saenz Julienne wrote:
> Hi,
>
> On Fri Dec 2, 2022 at 6:13 AM UTC, Chao Peng wrote:
>
> [...]
> > +The user sets the per-page memory attributes to a guest memory range
> > indicated
> > +by address/size, and in return KVM adjusts address and size to reflect the
> >
On Mon, Feb 13, 2023, Isaku Yamahata wrote:
> On Fri, Feb 10, 2023 at 12:35:30AM +,
> Sean Christopherson wrote:
>
> > On Wed, Feb 08, 2023, Isaku Yamahata wrote:
> > > On Fri, Dec 02, 2022 at 02:13:40PM +0800,
> > > Chao Peng wrote:
> > >
> > > > +static int
On Fri, Feb 10, 2023 at 12:35:30AM +,
Sean Christopherson wrote:
> On Wed, Feb 08, 2023, Isaku Yamahata wrote:
> > On Fri, Dec 02, 2022 at 02:13:40PM +0800,
> > Chao Peng wrote:
> >
> > > +static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm,
> > > +
On Wed, Feb 08, 2023, Isaku Yamahata wrote:
> On Fri, Dec 02, 2022 at 02:13:40PM +0800,
> Chao Peng wrote:
>
> > +static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm,
> > + struct kvm_memory_attributes *attrs)
> > +{
> > + gfn_t start, end;
> > +
On Fri, Dec 02, 2022 at 02:13:40PM +0800,
Chao Peng wrote:
> +static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm,
> +struct kvm_memory_attributes *attrs)
> +{
> + gfn_t start, end;
> + unsigned long i;
> + void *entry;
> + u64
On Tue, Jan 17, 2023, Chao Peng wrote:
> On Tue, Jan 17, 2023 at 11:21:10AM +0800, Binbin Wu wrote:
> >
> > On 12/2/2022 2:13 PM, Chao Peng wrote:
> > > In confidential computing usages, whether a page is private or shared is
> > > necessary information for KVM to perform operations like page
On 12/2/2022 2:13 PM, Chao Peng wrote:
In confidential computing usages, whether a page is private or shared is
necessary information for KVM to perform operations like page fault
handling, page zapping etc. There are other potential use cases for
per-page memory attributes, e.g. to make
On Tue, Jan 17, 2023 at 11:21:10AM +0800, Binbin Wu wrote:
>
> On 12/2/2022 2:13 PM, Chao Peng wrote:
> > In confidential computing usages, whether a page is private or shared is
> > necessary information for KVM to perform operations like page fault
> > handling, page zapping etc. There are
On Fri, Dec 02, 2022, Chao Peng wrote:
> diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
> index fbeaa9ddef59..a8e379a3afee 100644
> --- a/arch/x86/kvm/Kconfig
> +++ b/arch/x86/kvm/Kconfig
> @@ -49,6 +49,7 @@ config KVM
> select SRCU
> select INTERVAL_TREE
> select
On Tue, Jan 03, 2023 at 11:06:37PM +, Sean Christopherson wrote:
> On Tue, Jan 03, 2023, Wang, Wei W wrote:
> > On Tuesday, January 3, 2023 9:40 AM, Chao Peng wrote:
> > > > Because guest memory defaults to private, and now this patch stores
> > > > the attributes with
On Tue, Jan 03, 2023, Wang, Wei W wrote:
> On Tuesday, January 3, 2023 9:40 AM, Chao Peng wrote:
> > > Because guest memory defaults to private, and now this patch stores
> > > the attributes with KVM_MEMORY_ATTRIBUTE_PRIVATE instead of
> > _SHARED,
> > > it would bring more KVM_EXIT_MEMORY_FAULT
On Tuesday, January 3, 2023 9:40 AM, Chao Peng wrote:
> > Because guest memory defaults to private, and now this patch stores
> > the attributes with KVM_MEMORY_ATTRIBUTE_PRIVATE instead of
> _SHARED,
> > it would bring more KVM_EXIT_MEMORY_FAULT exits at the beginning of
> > boot time. Maybe it
On Wed, Dec 28, 2022 at 04:28:01PM +0800, Chenyi Qiang wrote:
...
> > +static int kvm_vm_ioctl_set_mem_attributes(struct kvm *kvm,
> > + struct kvm_memory_attributes *attrs)
> > +{
> > + gfn_t start, end;
> > + unsigned long i;
> > + void *entry;
> > +
On 12/2/2022 2:13 PM, Chao Peng wrote:
> In confidential computing usages, whether a page is private or shared is
> necessary information for KVM to perform operations like page fault
> handling, page zapping etc. There are other potential use cases for
> per-page memory attributes, e.g. to
On Mon, Dec 19, 2022 at 11:17:22AM +0100, Borislav Petkov wrote:
> On Mon, Dec 19, 2022 at 04:15:32PM +0800, Chao Peng wrote:
> > Tamping down with error number a bit:
> >
> > if (attrs->flags)
> > return -ENXIO;
> > if (attrs->attributes & ~supported_attrs)
> >
On Mon, Dec 19, 2022 at 04:15:32PM +0800, Chao Peng wrote:
> Tamping down with error number a bit:
>
> if (attrs->flags)
> return -ENXIO;
> if (attrs->attributes & ~supported_attrs)
> return -EOPNOTSUPP;
> if (!PAGE_ALIGNED(attrs->address)
On Fri, Dec 16, 2022 at 04:09:06PM +0100, Borislav Petkov wrote:
> On Fri, Dec 02, 2022 at 02:13:40PM +0800, Chao Peng wrote:
> > diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> > index 1782c4555d94..7f0f5e9f2406 100644
> > --- a/virt/kvm/kvm_main.c
> > +++ b/virt/kvm/kvm_main.c
> > @@
On Fri, Dec 02, 2022 at 02:13:40PM +0800, Chao Peng wrote:
> diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
> index 1782c4555d94..7f0f5e9f2406 100644
> --- a/virt/kvm/kvm_main.c
> +++ b/virt/kvm/kvm_main.c
> @@ -1150,6 +1150,9 @@ static struct kvm *kvm_create_vm(unsigned long type,
>
On Tue, Dec 06, 2022 at 03:07:27PM +, Fuad Tabba wrote:
> Hi,
>
> On Fri, Dec 2, 2022 at 6:18 AM Chao Peng wrote:
> >
> > In confidential computing usages, whether a page is private or shared is
> > necessary information for KVM to perform operations like page fault
> > handling, page
On Tue, Dec 06, 2022 at 10:34:32AM -0300, Fabiano Rosas wrote:
> Chao Peng writes:
>
> > In confidential computing usages, whether a page is private or shared is
> > necessary information for KVM to perform operations like page fault
> > handling, page zapping etc. There are other potential use
Hi,
On Fri, Dec 2, 2022 at 6:18 AM Chao Peng wrote:
>
> In confidential computing usages, whether a page is private or shared is
> necessary information for KVM to perform operations like page fault
> handling, page zapping etc. There are other potential use cases for
> per-page memory
Chao Peng writes:
> In confidential computing usages, whether a page is private or shared is
> necessary information for KVM to perform operations like page fault
> handling, page zapping etc. There are other potential use cases for
> per-page memory attributes, e.g. to make memory read-only (or
In confidential computing usages, whether a page is private or shared is
necessary information for KVM to perform operations like page fault
handling, page zapping etc. There are other potential use cases for
per-page memory attributes, e.g. to make memory read-only (or no-exec,
or exec-only,
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