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[Qemu-ppc] [PATCH V2 02/10] target/ppc: Add execute permission checking
From: |
Suraj Jitindar Singh |
Subject: |
[Qemu-ppc] [PATCH V2 02/10] target/ppc: Add execute permission checking to access authority check |
Date: |
Wed, 1 Mar 2017 18:12:53 +1100 |
Basic storage protection defines various access authority permissions
based on a slb storage key and pte pp value pair. This access authority
defines read, write and execute permissions however currently we only
use this to control read and write permissions and ignore the execute
control.
Fix the code to allow execute permissions based on the key-pp value pair.
Execute is allowed under the same conditions which enable reads.
(i.e. read permission -> execute permission)
Signed-off-by: Suraj Jitindar Singh <address@hidden>
Acked-by: David Gibson <address@hidden>
---
target/ppc/mmu-hash64.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)
diff --git a/target/ppc/mmu-hash64.c b/target/ppc/mmu-hash64.c
index b02d4ad..8105ecb 100644
--- a/target/ppc/mmu-hash64.c
+++ b/target/ppc/mmu-hash64.c
@@ -308,28 +308,27 @@ static int ppc_hash64_pte_prot(PowerPCCPU *cpu,
case 0x0:
case 0x1:
case 0x2:
- prot = PAGE_READ | PAGE_WRITE;
+ prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
break;
case 0x3:
case 0x6:
- prot = PAGE_READ;
+ prot = PAGE_READ | PAGE_EXEC;
break;
}
} else {
switch (pp) {
case 0x0:
case 0x6:
- prot = 0;
break;
case 0x1:
case 0x3:
- prot = PAGE_READ;
+ prot = PAGE_READ | PAGE_EXEC;
break;
case 0x2:
- prot = PAGE_READ | PAGE_WRITE;
+ prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC;
break;
}
}
--
2.5.5
- [Qemu-ppc] [PATCH V2 00/10] target/ppc: Implement POWER9 pseries TCG RADIX Support, Suraj Jitindar Singh, 2017/03/01
- [Qemu-ppc] [PATCH V2 01/10] target/ppc: Add Instruction Authority Mask Register Check, Suraj Jitindar Singh, 2017/03/01
- [Qemu-ppc] [PATCH V2 02/10] target/ppc: Add execute permission checking to access authority check,
Suraj Jitindar Singh <=
- [Qemu-ppc] [PATCH V2 03/10] target/ppc: Move no-execute and guarded page checking into new function, Suraj Jitindar Singh, 2017/03/01
- [Qemu-ppc] [PATCH V2 04/10] target/ppc: Rework hash mmu page fault code and add defines for clarity, Suraj Jitindar Singh, 2017/03/01
- [Qemu-ppc] [PATCH V2 05/10] target/ppc: Add ibm, processor-radix-AP-encodings for TCG, Suraj Jitindar Singh, 2017/03/01
- [Qemu-ppc] [PATCH V2 06/10] target/ppc: Add POWER9/ISAv3.00 to compat_table, Suraj Jitindar Singh, 2017/03/01
- [Qemu-ppc] [PATCH V2 07/10] target/ppc: Flush TLB on write to PIDR, Suraj Jitindar Singh, 2017/03/01
- [Qemu-ppc] [PATCH V2 08/10] target/ppc: Adapt tlbie[l] for ISAv3.00 Support, Suraj Jitindar Singh, 2017/03/01