On January 14, 2022 4:32 PM, Gerd Hoffmann wrote:
> > > I don't see that PEI-less boot is required for that. Sure, when
> > > stripping down the build and removing all the features which require
> > > PEIMs there isn't much left to do for the PEI phase. So it makes
> > > sense to look into droppi
Hi,
> > I don't see that PEI-less boot is required for that. Sure, when stripping
> > down
> > the build and removing all the features which require PEIMs there isn't much
> > left to do for the PEI phase. So it makes sense to look into dropping PEI
> > altogether. But it's more a "nice to h
On January 11, 2022 5:23 PM, Gerd Hoffmann wrote:
>
> > > Well, if you want avoid the refactoring because of the risk there is
> > > still the option to have tdx config-b use the normal PEI boot flow.
> > > Then revisit refactoring and adding support for PEI-less boot later.
> > >
> > I think it s
Hi,
> > Well, if you want avoid the refactoring because of the risk there is still
> > the
> > option to have tdx config-b use the normal PEI boot flow.
> > Then revisit refactoring and adding support for PEI-less boot later.
> >
> I think it still makes sense (Adding a basic PlatformInitLib w
On January 10, 2022 3:56 PM, Gerd Hoffmann wrote:
> On Fri, Jan 07, 2022 at 06:13:37AM +, Xu, Min M wrote:
> > On January 3, 2022 4:02 PM, Gerd Hoffmann wrote:
> > >
> > > > PCDs cannot be set in SEC phase, so the values should be saved in
> > > > a Hob (for example, PLATFORM_INFO_HOB). In earl
On Fri, Jan 07, 2022 at 06:13:37AM +, Xu, Min M wrote:
> On January 3, 2022 4:02 PM, Gerd Hoffmann wrote:
> >
> > > PCDs cannot be set in SEC phase, so the values should be saved in a
> > > Hob (for example, PLATFORM_INFO_HOB). In early DXE phase these values
> > > are set to the PCDs. This is
On January 3, 2022 4:02 PM, Gerd Hoffmann wrote:
>
> > PCDs cannot be set in SEC phase, so the values should be saved in a
> > Hob (for example, PLATFORM_INFO_HOB). In early DXE phase these values
> > are set to the PCDs. This is how TdxDxe does today.
> >
> > Other tasks can be done in SEC phase.
Hi,
> PCDs cannot be set in SEC phase, so the values should be saved in a
> Hob (for example, PLATFORM_INFO_HOB). In early DXE phase these values
> are set to the PCDs. This is how TdxDxe does today.
>
> Other tasks can be done in SEC phase. I think there should be a lib
> (for example, Platfor
Hi
>
> > > Why? Booting non-tdx guests without PEI shouldn't be fundamentally
> > > different from a TDX guest. Memory detection needs fw_cfg instead
> > > of the td_hob, and you have to skip some tdx setup steps, but that
> should be it.
> > > Code for all that exists in PlatformPei, it only ne
Hi,
> > Why? Booting non-tdx guests without PEI shouldn't be fundamentally
> > different from a TDX guest. Memory detection needs fw_cfg instead of the
> > td_hob, and you have to skip some tdx setup steps, but that should be it.
> > Code for all that exists in PlatformPei, it only needs to be
On December 16, 2021 10:25 PM, Gerd Hoffmann wrote:
> > > Oh, wow. So you compile in PEI, then decide at runtime whenever you
> > > use it or not?
> > Yes.
> > In OvmfPkgX64.dsc above code will not be built into the image. So it follows
> the SEC->PEI->DXE flow.
> > In IntelTdxX64.dsc, it if is Td
Hi,
> > Oh, wow. So you compile in PEI, then decide at runtime whenever you use it
> > or not?
> Yes.
> In OvmfPkgX64.dsc above code will not be built into the image. So it follows
> the SEC->PEI->DXE flow.
> In IntelTdxX64.dsc, it if is Tdx guest, it jumps from SEC to DXE (see
> TdxStartup (
On December 15, 2021 6:28 PM, Gerd Hoffmann wrote:
> On Tue, Dec 14, 2021 at 09:41:24PM +0800, Min Xu wrote:
> > RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429
> >
> > Tdvf Config-B skip PEI phase to reduce attack surface. So instead of
> > jumping to SecStartupPhase2 (), TdxStartup () is
On Tue, Dec 14, 2021 at 09:41:24PM +0800, Min Xu wrote:
> RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429
>
> Tdvf Config-B skip PEI phase to reduce attack surface. So instead of
> jumping to SecStartupPhase2 (), TdxStartup () is called. This function
> brings up Tdx guest from SEC phase
14 matches
Mail list logo
