On 2/22/2017 12:13 PM, Dave Hansen wrote:
On 02/16/2017 07:43 AM, Tom Lendacky wrote:
static inline unsigned long pte_pfn(pte_t pte)
{
- return (pte_val(pte) & PTE_PFN_MASK) >> PAGE_SHIFT;
+ return (pte_val(pte) & ~sme_me_mask & PTE_PFN_MASK) >> PAGE_SHIFT;
}
static inline
On 02/16/2017 07:43 AM, Tom Lendacky wrote:
> )
> @@ -673,7 +683,7 @@ static inline unsigned long pgd_page_vaddr(pgd_t pgd)
> * Currently stuck as a macro due to indirect forward reference to
> * linux/mmzone.h's __section_mem_map_addr() definition:
> */
> -#define pgd_page(pgd)
On 02/16/2017 07:43 AM, Tom Lendacky wrote:
> static inline unsigned long pte_pfn(pte_t pte)
> {
> - return (pte_val(pte) & PTE_PFN_MASK) >> PAGE_SHIFT;
> + return (pte_val(pte) & ~sme_me_mask & PTE_PFN_MASK) >> PAGE_SHIFT;
> }
>
> static inline unsigned long pmd_pfn(pmd_t pmd)
> {
On 2/20/2017 12:38 PM, Borislav Petkov wrote:
On Thu, Feb 16, 2017 at 09:43:32AM -0600, Tom Lendacky wrote:
Adding general kernel support for memory encryption includes:
- Modify and create some page table macros to include the Secure Memory
Encryption (SME) memory encryption mask
- Modify
On Tue, Feb 21, 2017 at 11:18:08AM -0600, Tom Lendacky wrote:
> It's the latter. It's really only used for working with values that
> will either be written to or read from cr3. I'll add some comments
> around the macros as well as expand on it in the commit message.
Ok, that makes sense.
On 2/20/2017 9:21 AM, Borislav Petkov wrote:
On Thu, Feb 16, 2017 at 09:43:32AM -0600, Tom Lendacky wrote:
Adding general kernel support for memory encryption includes:
- Modify and create some page table macros to include the Secure Memory
Encryption (SME) memory encryption mask
Let's not
On Thu, Feb 16, 2017 at 09:43:32AM -0600, Tom Lendacky wrote:
> Adding general kernel support for memory encryption includes:
> - Modify and create some page table macros to include the Secure Memory
> Encryption (SME) memory encryption mask
> - Modify and create some macros for calculating
On Thu, Feb 16, 2017 at 09:43:32AM -0600, Tom Lendacky wrote:
> Adding general kernel support for memory encryption includes:
> - Modify and create some page table macros to include the Secure Memory
> Encryption (SME) memory encryption mask
Let's not write it like some technical document:
Adding general kernel support for memory encryption includes:
- Modify and create some page table macros to include the Secure Memory
Encryption (SME) memory encryption mask
- Modify and create some macros for calculating physical and virtual
memory addresses
- Provide an SME initialization
