Surface property tracking mechanism

Patent metadata

Field	Value
Publication number	US-10969999-B2
Application number	US-201816234655-A
Country	US
Kind code	B2
Filing date	Dec 28, 2018
Priority date	Sep 26, 2016
Publication date	Apr 6, 2021
Grant date	Apr 6, 2021

Abstract

An apparatus to facilitate a tracking of surface properties is disclosed. The apparatus includes one or more processors to receive a memory request, access a virtual to virtual page table to retrieve an address storing surface properties metadata, and process the memory request, wherein the virtual to virtual page table provides a mapping between a main surface and an auxiliary surface including the surface properties metadata.

First claim

What is claimed is:

1. An apparatus to facilitate a tracking of surface properties, comprising:
one or more processors to receive a memory request, access a virtual to virtual page table to perform a virtual to virtual translation to retrieve an address storing surface properties metadata determine a location of the surface properties metadata, and process the memory request,
wherein the virtual to virtual page table provides a mapping between a main surface and an auxiliary surface including the surface properties metadata.

2. The apparatus of claim 1 , further comprising processing the memory request according to information specified in the properties metadata.

3. The apparatus of claim 2 , further comprising modifying the surface properties metadata to indicate how the memory request is to process the main surface.

4. The apparatus of claim 1 , wherein the memory request comprises a compress memory write.

5. The apparatus of claim 4 , wherein processing the compress memory write comprises determining a type of compression to perform on write data, retrieving a header address from the virtual to virtual page table and storing information indicating the type of compression in the header address as surface properties metadata.

6. The apparatus of claim 5 , wherein processing the compress memory write further comprises compressing the write data according to the type of compression.

7. The apparatus of claim 1 , wherein the memory request comprises a compress memory read.

8. The apparatus of claim 7 , wherein processing the compress memory read comprises retrieving the header address from the virtual to virtual page table and reading the surface properties metadata stored in the header address to determine a type of decompression to perform on write data.

9. The apparatus of claim 8 , wherein processing the compress memory read further comprises decompressing read data according indicated by the surface properties metadata.

10. The apparatus of claim 1 , wherein the memory request comprises an encrypted memory write.

11. The apparatus of claim 10 , wherein processing the encrypted memory write comprises retrieving a header address from the virtual to virtual page table and storing information on an encrypted state in the header address as surface properties metadata.

12. The apparatus of claim 1 , wherein the memory request comprises an encrypted memory read.

13. The apparatus of claim 12 , wherein processing the encrypted memory read comprises retrieving the header address from the virtual to virtual page table, reading the surface properties metadata stored in the header address to determine an encrypted state and processing the encrypted memory read according to the encrypted state.

14. A method to facilitate a tracking of surface properties, comprising:
receiving a memory request; and
accessing a virtual to virtual page table to perform a virtual to virtual translation to retrieve an address storing surface properties metadata determine a location of the surface properties metadata; and
processing the memory request, wherein the virtual to virtual page table provides a mapping between a main surface and an auxiliary surface including the surface properties metadata.

15. The method of claim 14 , wherein the memory request comprises a compress memory write.

16. The method of claim 15 , wherein processing the compress memory write comprises:
determining a type of compression to perform on write data;
retrieving a header address from the virtual to virtual page table; and
storing information indicating the type of compression in the header address as surface properties metadata.

17. The method of claim 14 , wherein the memory request comprises a compress memory read.

18. The method of claim 17 , wherein processing the compress memory write comprises:
retrieving the header address from the virtual to virtual page table;
reading the surface properties metadata stored in the header address to determine a type of decompression to perform on write data; and
decompressing read data according indicated by the surface properties metadata.

19. The method of claim 14 , wherein the memory request comprises an encrypted memory write.

20. The method of claim 19 , wherein processing the encrypted memory write comprises:
retrieving a header address from the virtual to virtual page table; and
storing information on an encrypted state in the header address as surface properties metadata.

21. The method of claim 14 , wherein the memory request comprises an encrypted memory read.

22. The method of claim 21 , wherein processing the encrypted memory read comprises:
retrieving the header address from the virtual to virtual page table;
reading the surface properties metadata stored in the header address to determine an encrypted state; and
processing the encrypted memory read according to the encrypted state.

23. At least one non-transitory computer readable medium having instructions stored thereon, which when executed by one or more processors, cause the processors to:
receive a memory request; and
access a virtual to virtual page table to perform a virtual to virtual translation to retrieve an address storing surface properties metadata determine a location of the surface properties metadata; and
process the memory request, wherein the virtual to virtual page table provides a mapping between a main surface and an auxiliary surface including the surface properties metadata.

24. The non-transitory computer readable medium of claim 23 , having instructions stored thereon, which when executed by one or more processors, further cause the processors to process the memory request according to information specified in the properties metadata.

25. The non-transitory computer readable medium of claim 24 , having instructions stored thereon, which when executed by one or more processors, further cause the processors to modify the surface properties metadata to indicate how the memory request is to process the main surface.

Assignees

• Intel Corp

Inventors

• Krishnan Vidhya
• Cooray Niranjan
• Surti Prasoonkumar
• Feit John

Classifications

• G06F21/83 Primary

  input devices, e.g. keyboards, mice or controllers thereof · CPC title

• G06F12/1036

  for multiple virtual address spaces, e.g. segmentation (G06F12/1045 takes precedence) · CPC title

• G06F3/0673

  Single storage device · CPC title

• G06F12/1045

  associated with a data cache · CPC title

• G06F3/0659 Primary

  Command handling arrangements, e.g. command buffers, queues, command scheduling · CPC title