Re: [RFC PATCH v3 12/20] x86: Decrypt trampoline area if memory encryption is active

2016-11-19 Thread Tom Lendacky
On 11/17/2016 12:09 PM, Borislav Petkov wrote: > On Wed, Nov 09, 2016 at 06:37:08PM -0600, Tom Lendacky wrote: >> When Secure Memory Encryption is enabled, the trampoline area must not >> be encrypted. A CPU running in real mode will not be able to decrypt >> memory that has been encrypted because

Re: [RFC PATCH v3 12/20] x86: Decrypt trampoline area if memory encryption is active

2016-11-17 Thread Borislav Petkov
On Wed, Nov 09, 2016 at 06:37:08PM -0600, Tom Lendacky wrote: > When Secure Memory Encryption is enabled, the trampoline area must not > be encrypted. A CPU running in real mode will not be able to decrypt > memory that has been encrypted because it will not be able to use addresses > with the memo

[RFC PATCH v3 12/20] x86: Decrypt trampoline area if memory encryption is active

2016-11-09 Thread Tom Lendacky
When Secure Memory Encryption is enabled, the trampoline area must not be encrypted. A CPU running in real mode will not be able to decrypt memory that has been encrypted because it will not be able to use addresses with the memory encryption mask. Signed-off-by: Tom Lendacky --- arch/x86/realmo