On 5/24/24 17:44, Michael Kelley wrote:
From: Dexuan Cui Sent: Friday, May 24, 2024 1:46 AM
From: Dave Hansen
Sent: Thursday, May 23, 2024 7:26 AM
[...]
On 5/22/24 19:24, Dexuan Cui wrote:
...
My thoughts:
__bss_decrypted is named as if it applies to any CoCo VM, but really
it is
On Fri, May 24, 2024 at 08:45:42AM +, Dexuan Cui wrote:
> > From: Dave Hansen
> > Sent: Thursday, May 23, 2024 7:26 AM
> > [...]
> > On 5/22/24 19:24, Dexuan Cui wrote:
> > ...
> > > +static bool noinstr intel_cc_platform_td_l2(enum cc_attr attr)
> > > +{
> > > + switch (attr) {
> > > + case
From: Dexuan Cui Sent: Friday, May 24, 2024 1:46 AM
>
> > From: Dave Hansen
> > Sent: Thursday, May 23, 2024 7:26 AM
> > [...]
> > On 5/22/24 19:24, Dexuan Cui wrote:
> > ...
> > > +static bool noinstr intel_cc_platform_td_l2(enum cc_attr attr)
> > > +{
> > > + switch (attr) {
> > > + case
> From: Dave Hansen
> Sent: Thursday, May 23, 2024 7:26 AM
> [...]
> On 5/22/24 19:24, Dexuan Cui wrote:
> ...
> > +static bool noinstr intel_cc_platform_td_l2(enum cc_attr attr)
> > +{
> > + switch (attr) {
> > + case CC_ATTR_GUEST_MEM_ENCRYPT:
> > + case CC_ATTR_MEM_ENCRYPT:
> > +
> From: Kirill A. Shutemov
> Sent: Thursday, May 23, 2024 5:06 AM
> To: Dexuan Cui
> [...]
> On Wed, May 22, 2024 at 07:24:41PM -0700, Dexuan Cui wrote:
> > A TDX VM on Hyper-V may run in TD mode or Partitioned TD mode (L2). For
> > the former, the VM has not enabled the Hyper-V TSC page (which
On 5/22/24 19:24, Dexuan Cui wrote:
...
> +static bool noinstr intel_cc_platform_td_l2(enum cc_attr attr)
> +{
> + switch (attr) {
> + case CC_ATTR_GUEST_MEM_ENCRYPT:
> + case CC_ATTR_MEM_ENCRYPT:
> + return true;
> + default:
> + return false;
> + }
>
On Wed, May 22, 2024 at 07:24:41PM -0700, Dexuan Cui wrote:
> A TDX VM on Hyper-V may run in TD mode or Partitioned TD mode (L2). For
> the former, the VM has not enabled the Hyper-V TSC page (which is defined
> in drivers/clocksource/hyperv_timer.c: "... tsc_pg __bss_decrypted ...")
> because,
