From: Ashish Kalra
SNP guests allocate shared buffers to perform I/O. It is done by
allocating pages normally from the buddy allocator and converting them
to shared with set_memory_decrypted().
The second kernel has no idea what memory is converted this way. It only
sees E820_TYPE_RAM.
Accessin
From: Ashish Kalra
Accessing guest video memory/RAM during kernel decompressor
causes guest termination as boot stage2 #VC handler for
SEV-ES/SNP systems does not support MMIO handling.
This issue is observed with SEV-ES/SNP guest kexec as
kexec -c adds screen_info to the boot parameters
passed
From: Ashish Kalra
Add sev_es_enabled() function to detect if SEV-ES
support is enabled.
Signed-off-by: Ashish Kalra
---
arch/x86/boot/compressed/sev.c | 5 +
arch/x86/boot/compressed/sev.h | 2 ++
2 files changed, 7 insertions(+)
diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boo
From: Ashish Kalra
For kexec use case, need to use and stick to the EFI memmap passed
from the first kernel via boot-params/setup data, hence,
skip efi_arch_mem_reserve() during kexec.
Additionally during SNP guest kexec testing discovered that EFI memmap
is corrupted during chained kexec. kexec
From: Ashish Kalra
The patchset adds bits and pieces to get kexec (and crashkernel) work on
SNP guest.
v3:
- Rebased;
- moved Keep page tables that maps E820_TYPE_ACPI patch to Kirill's tdx
guest kexec patch series.
- checking the md attribute instead of checking the efi_setup for
detecting
On Mon, Apr 01, 2024 at 06:39:55PM +, Justin Stitt wrote:
> strncpy() is in the process of being replaced as it is deprecated [1].
> We should move towards safer and less ambiguous string interfaces.
>
> Looking at vmcoredd_header's definition:
> | struct vmcoredd_header {
> |
Hi Kirill,
On 3/25/2024 5:38 AM, Kirill A. Shutemov wrote:
The patchset adds bits and pieces to get kexec (and crashkernel) work on
TDX guest.
The last patch implements CPU offlining according to the approved ACPI
spec change poposal[1]. It unlocks kexec with all CPUs visible in the target
kern
On Thu Apr 4, 2024 at 2:56 AM EEST, Eric Biggers wrote:
> On Wed, Apr 03, 2024 at 09:32:02AM -0700, Andy Lutomirski wrote:
> > On Fri, Feb 23, 2024, at 10:30 AM, Eric Biggers wrote:
> > > On Fri, Feb 23, 2024 at 06:20:27PM +, Andrew Cooper wrote:
> > >> On 23/02/2024 5:54 pm, Eric Biggers wrote
On Thu, Apr 04, 2024 at 10:40:34AM +1300, Huang, Kai wrote:
>
>
> On 3/04/2024 4:42 am, Kirill A. Shutemov wrote:
> > On Fri, Mar 29, 2024 at 06:48:21PM +0200, Kirill A. Shutemov wrote:
> > > On Fri, Mar 29, 2024 at 11:21:32PM +0800, Xiaoyao Li wrote:
> > > > On 3/25/2024 6:38 PM, Kirill A. Shute
