From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, sai.pavan.boddu@xilinx.com,
alistair@alistair23.me, frasse.iglesias@gmail.com,
edgar.iglesias@xilinx.com
Subject: [Qemu-devel] [PATCH v1 5/5] target-microblaze: mmu: Make the TLBX MISS bit read-only
Date: Thu, 19 Apr 2018 13:21:31 +0200 [thread overview]
Message-ID: <20180419112131.16932-6-edgar.iglesias@gmail.com> (raw)
In-Reply-To: <20180419112131.16932-1-edgar.iglesias@gmail.com>
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
Make the TLBX MISS bit read-only.
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---
target/microblaze/mmu.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target/microblaze/mmu.c b/target/microblaze/mmu.c
index 8391811900..9d5e6aa8a5 100644
--- a/target/microblaze/mmu.c
+++ b/target/microblaze/mmu.c
@@ -273,6 +273,10 @@ void mmu_write(CPUMBState *env, uint32_t rn, uint32_t v)
env->mmu.regs[rn] = v;
}
break;
+ case MMU_R_TLBX:
+ /* Bit 31 is read-only. */
+ env->mmu.regs[rn] = deposit32(env->mmu.regs[rn], 0, 31, v);
+ break;
case MMU_R_TLBSX:
{
struct microblaze_mmu_lookup lu;
--
2.14.1
next prev parent reply other threads:[~2018-04-19 11:21 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-19 11:21 [Qemu-devel] [PATCH v1 0/5] target-microblaze: Misc bug fixes Edgar E. Iglesias
2018-04-19 11:21 ` [Qemu-devel] [PATCH v1 1/5] target-microblaze: Respect MSR.PVR as read-only Edgar E. Iglesias
2018-04-19 19:56 ` Richard Henderson
2018-04-19 20:33 ` Edgar E. Iglesias
2018-04-19 21:17 ` Richard Henderson
2018-04-19 21:21 ` Edgar E. Iglesias
2018-04-19 11:21 ` [Qemu-devel] [PATCH v1 2/5] target-microblaze: Fix trap checks for FPU insns Edgar E. Iglesias
2018-04-19 17:20 ` Alistair Francis
2018-04-19 11:21 ` [Qemu-devel] [PATCH v1 3/5] target-microblaze: Don't clobber the IMM reg for ld/st reversed Edgar E. Iglesias
2018-04-19 11:21 ` [Qemu-devel] [PATCH v1 4/5] target-microblaze: mmu: Make TLBSX write-only Edgar E. Iglesias
2018-04-19 23:10 ` Alistair Francis
2018-04-19 11:21 ` Edgar E. Iglesias [this message]
2018-04-19 23:12 ` [Qemu-devel] [PATCH v1 5/5] target-microblaze: mmu: Make the TLBX MISS bit read-only Alistair Francis
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