On Wed, 21 Jun 2017, Tom Lendacky wrote:
> On 6/21/2017 10:38 AM, Thomas Gleixner wrote:
> > /*
> > * Sanitize CPU configuration and retrieve the modifier
> > * for the initial pgdir entry which will be programmed
> > * into CR3. Depends on enabled SME encryption, normally 0.
> >
On 6/21/2017 10:38 AM, Thomas Gleixner wrote:
On Wed, 21 Jun 2017, Tom Lendacky wrote:
On 6/21/2017 2:16 AM, Thomas Gleixner wrote:
Why is this an unconditional function? Isn't the mask simply 0 when the MEM
ENCRYPT support is disabled?
I made it unconditional because of the call from head_64
On Wed, 21 Jun 2017, Tom Lendacky wrote:
> On 6/21/2017 2:16 AM, Thomas Gleixner wrote:
> > Why is this an unconditional function? Isn't the mask simply 0 when the MEM
> > ENCRYPT support is disabled?
>
> I made it unconditional because of the call from head_64.S. I can't make
> use of the C level
On 6/21/2017 2:16 AM, Thomas Gleixner wrote:
On Fri, 16 Jun 2017, Tom Lendacky wrote:
diff --git a/arch/x86/include/asm/mem_encrypt.h
b/arch/x86/include/asm/mem_encrypt.h
index a105796..988b336 100644
--- a/arch/x86/include/asm/mem_encrypt.h
+++ b/arch/x86/include/asm/mem_encrypt.h
@@ -15,16 +1
On Fri, 16 Jun 2017, Tom Lendacky wrote:
> diff --git a/arch/x86/include/asm/mem_encrypt.h
> b/arch/x86/include/asm/mem_encrypt.h
> index a105796..988b336 100644
> --- a/arch/x86/include/asm/mem_encrypt.h
> +++ b/arch/x86/include/asm/mem_encrypt.h
> @@ -15,16 +15,24 @@
>
> #ifndef __ASSEMBLY__
On 6/20/2017 2:38 AM, Borislav Petkov wrote:
On Fri, Jun 16, 2017 at 01:51:15PM -0500, Tom Lendacky wrote:
Add support to the early boot code to use Secure Memory Encryption (SME).
Since the kernel has been loaded into memory in a decrypted state, encrypt
the kernel in place and update the early
On Fri, Jun 16, 2017 at 01:51:15PM -0500, Tom Lendacky wrote:
> Add support to the early boot code to use Secure Memory Encryption (SME).
> Since the kernel has been loaded into memory in a decrypted state, encrypt
> the kernel in place and update the early pagetables with the memory
> encryption m
Add support to the early boot code to use Secure Memory Encryption (SME).
Since the kernel has been loaded into memory in a decrypted state, encrypt
the kernel in place and update the early pagetables with the memory
encryption mask so that new pagetable entries will use memory encryption.
The rou
