ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

exec/memtxattr: add process identifier to the transaction attributes 

Extend memory transaction attributes with process identifier to allow
per-request address translation logic to use requester_id / process_id
to identify memory mapping (e.g. enabling IOMMU w/ PASID translations).

Signed-off-by: Tomasz Jeznach <tjeznach@rivosinc.com>
Reviewed-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Jason Chien <jason.chien@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Daniel Henrique Barboza <dbarboza@ventanamicro.com>
Message-ID: <20241016204038.649340-2-dbarboza@ventanamicro.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
This commit is contained in:
Tomasz Jeznach 2024-10-16 17:40:25 -03:00 committed by Alistair Francis
parent a6a47319dd
commit c6f3443af1
1 changed files with 5 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/exec/memattrs.h
View File

@ -52,6 +52,11 @@ typedef struct MemTxAttrs {
unsigned int memory:1;
/* Requester ID (for MSI for example) */
unsigned int requester_id:16;
/*
* PID (PCI PASID) support: Limited to 8 bits process identifier.
*/
unsigned int pid:8;
} MemTxAttrs;
/* Bus masters which don't specify any attributes will get this,