: [edk2] [RFC PATCH 1/1] OvmfPkg/QemuFlash: Fix Runtime variable
access when SEV is enabled
On 06/28/18 08:16, Zeng, Star wrote:
> 1) My understanding is Variable Driver is managing the variable region in
> flash although the flash read/write/erase operations are done in flash
> driver
On 06/28/2018 07:57 AM, Laszlo Ersek wrote:
[...]
--- a/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockService.c
+++ b/OvmfPkg/QemuFlashFvbServicesRuntimeDxe/FwBlockService.c
@@ -847,7 +847,7 @@ MarkMemoryRangeForRuntimeAccess (
);
Status = gDS->AddMemorySpace (
-
On 06/28/18 14:57, Laszlo Ersek wrote:
> On 06/27/18 19:49, Brijesh Singh wrote:
>>
>>
>> On 06/27/2018 11:59 AM, Laszlo Ersek wrote:
>>> On 06/27/18 18:34, Brijesh Singh wrote:
On 06/27/2018 07:54 AM, Laszlo Ersek wrote:
> On 06/26/18 21:46, Brijesh Singh wrote:
>>>
>> After that,
On 06/28/18 08:25, Zeng, Star wrote:
> My understanding is MMIO is not managed by UEFI memory services, but GCD
> services.
> PI spec says " If the memory range specified by BaseAddress and Length is of
> type EfiGcdMemoryTypeSystemMemory or EfiGcdMemoryTypeMoreReliable, then the
> memory range
lo
> Ersek
> Sent: Wednesday, June 27, 2018 8:54 PM
> To: Brijesh Singh ; edk2-devel@lists.01.org
> Cc: Tom Lendacky ; Dong, Eric ;
> Zeng, Star ; Justen, Jordan L
> Subject: Re: [edk2] [RFC PATCH 1/1] OvmfPkg/QemuFlash: Fix Runtime variable
> access when SEV is
On 06/27/18 19:49, Brijesh Singh wrote:
>
>
> On 06/27/2018 11:59 AM, Laszlo Ersek wrote:
>> On 06/27/18 18:34, Brijesh Singh wrote:
>>> On 06/27/2018 07:54 AM, Laszlo Ersek wrote:
On 06/26/18 21:46, Brijesh Singh wrote:
>>
> After that, any access
> to the flash will end up going
2018 1:50 AM
To: Laszlo Ersek ; edk2-devel@lists.01.org
Cc: Tom Lendacky ; brijesh.si...@amd.com; Dong, Eric
; Zeng, Star ; Justen, Jordan L
Subject: Re: [edk2] [RFC PATCH 1/1] OvmfPkg/QemuFlash: Fix Runtime variable
access when SEV is enabled
On 06/27/2018 11:59 AM, Laszlo Ersek wrote:
> O
] On Behalf Of Laszlo
Ersek
Sent: Wednesday, June 27, 2018 8:54 PM
To: Brijesh Singh ; edk2-devel@lists.01.org
Cc: Tom Lendacky ; Dong, Eric ;
Zeng, Star ; Justen, Jordan L
Subject: Re: [edk2] [RFC PATCH 1/1] OvmfPkg/QemuFlash: Fix Runtime variable
access when SEV is enabled
On 06/26/18 21:46
On 06/27/2018 11:59 AM, Laszlo Ersek wrote:
On 06/27/18 18:34, Brijesh Singh wrote:
On 06/27/2018 07:54 AM, Laszlo Ersek wrote:
On 06/26/18 21:46, Brijesh Singh wrote:
After that, any access
to the flash will end up going through the encryption engine. I did try
hacking EDK2 to restore
On 06/27/18 18:34, Brijesh Singh wrote:
> On 06/27/2018 07:54 AM, Laszlo Ersek wrote:
>> On 06/26/18 21:46, Brijesh Singh wrote:
>>> After that, any access
>>> to the flash will end up going through the encryption engine. I did try
>>> hacking EDK2 to restore the C-bit
>>
>> (I continue to be
On 06/27/2018 11:34 AM, Brijesh Singh wrote:
I think (2) will solve the complete issue, we still need to figure how
I meant to say (2) will *not* solve the complete issue !
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Thanks for the quick feedback Laszlo !
On 06/27/2018 07:54 AM, Laszlo Ersek wrote:
On 06/26/18 21:46, Brijesh Singh wrote:
Problem statement:
--
Fedora-28 contains 4.16 kernel -- which has all the required support to
run as an SEV guest. When the installer is launched from
On 06/26/18 21:46, Brijesh Singh wrote:
> Problem statement:
> --
> Fedora-28 contains 4.16 kernel -- which has all the required support to
> run as an SEV guest. When the installer is launched from SEV guest then
> it fails to install the bootloader. The installer was failing to
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