[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-riscv] [PATCH v1 07/27] target/riscv: Remove strict perm checking
|
From: |
Alistair Francis |
|
Subject: |
[Qemu-riscv] [PATCH v1 07/27] target/riscv: Remove strict perm checking for CSR R/W |
|
Date: |
Fri, 7 Jun 2019 14:55:39 -0700 |
The privledge check based on the CSR address mask 0x300 doesn't work
when using Hypervisor extensions so remove the check
Signed-off-by: Alistair Francis <address@hidden>
---
target/riscv/csr.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/target/riscv/csr.c b/target/riscv/csr.c
index f9e2910643..809c4c09a9 100644
--- a/target/riscv/csr.c
+++ b/target/riscv/csr.c
@@ -776,9 +776,8 @@ int riscv_csrrw(CPURISCVState *env, int csrno, target_ulong
*ret_value,
/* check privileges and return -1 if check fails */
#if !defined(CONFIG_USER_ONLY)
- int csr_priv = get_field(csrno, 0x300);
int read_only = get_field(csrno, 0xC00) == 3;
- if ((write_mask && read_only) || (env->priv < csr_priv)) {
+ if (write_mask && read_only) {
return -1;
}
#endif
--
2.21.0
- [Qemu-riscv] [PATCH v1 00/27] Add RISC-V Hypervisor Extension, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 02/27] target/riscv: Add the Hypervisor extension, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 05/27] target/riscv: Add the Hypervisor CSRs to CPUState, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 03/27] target/riscv: Add the virtulisation mode, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 01/27] target/riscv: Don't set write permissions on dirty PTEs, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 07/27] target/riscv: Remove strict perm checking for CSR R/W,
Alistair Francis <=
- [Qemu-riscv] [PATCH v1 04/27] target/riscv: Add the force HS exception mode, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 06/27] target/riscv: Dump Hypervisor registers if enabled, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 08/27] target/riscv: Create function to test if FP is enabled, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 09/27] target/riscv: Add support for background interrupt setting, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 10/27] target/riscv: Add Hypervisor CSR access functions, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 12/27] target/riscv: Add background register swapping function, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 13/27] target/ricsv: Flush the TLB on virtulisation mode changes, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 16/27] riscv: plic: Always set sip.SEIP bit for HS, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 11/27] target/riscv: Add background CSRs accesses, Alistair Francis, 2019/06/07
- [Qemu-riscv] [PATCH v1 15/27] riscv: plic: Remove unused interrupt functions, Alistair Francis, 2019/06/07