From: "Edgar E. Iglesias" <edgar.iglesias@gmail.com>
To: qemu-devel@nongnu.org
Cc: edgar.iglesias@xilinx.com, peter.maydell@linaro.org
Subject: [PULL v1 6/8] target/microblaze: mbar: Trap sleeps from user-space
Date: Mon, 24 Aug 2020 12:00:39 +0200 [thread overview]
Message-ID: <20200824100041.1864420-7-edgar.iglesias@gmail.com> (raw)
In-Reply-To: <20200824100041.1864420-1-edgar.iglesias@gmail.com>
From: "Edgar E. Iglesias" <edgar.iglesias@xilinx.com>
Trap mbar-sleeps from user-space.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reported-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
---
target/microblaze/translate.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/target/microblaze/translate.c b/target/microblaze/translate.c
index 530c15e5ad..a96cb21d96 100644
--- a/target/microblaze/translate.c
+++ b/target/microblaze/translate.c
@@ -1250,6 +1250,11 @@ static void dec_br(DisasContext *dc)
LOG_DIS("sleep\n");
+ if (trap_userspace(dc, true)) {
+ /* Sleep is a privileged instruction. */
+ return;
+ }
+
t_sync_flags(dc);
tcg_gen_st_i32(tmp_1, cpu_env,
-offsetof(MicroBlazeCPU, env)
--
2.25.1
next prev parent reply other threads:[~2020-08-24 10:05 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-08-24 10:00 [PULL v1 0/8] Xilinx queue 2020-08-14 Edgar E. Iglesias
2020-08-24 10:00 ` [PULL v1 1/8] target/microblaze: mbar: Transfer dc->rd to mbar_imm Edgar E. Iglesias
2020-08-24 10:00 ` [PULL v1 2/8] target/microblaze: mbar: Move LOG_DIS to before sleep Edgar E. Iglesias
2020-08-24 10:00 ` [PULL v1 3/8] target/microblaze: mbar: Add support for data-access barriers Edgar E. Iglesias
2020-08-24 10:00 ` [PULL v1 4/8] target/microblaze: swx: Use atomic_cmpxchg Edgar E. Iglesias
2020-08-24 10:00 ` [PULL v1 5/8] configure: microblaze: Enable mttcg Edgar E. Iglesias
2020-08-24 10:00 ` Edgar E. Iglesias [this message]
2020-08-24 10:00 ` [PULL v1 7/8] microblaze: petalogix-ml605: Add device-tree source Edgar E. Iglesias
2020-08-24 10:00 ` [PULL v1 8/8] microblaze: petalogix-s3adsp1800: " Edgar E. Iglesias
2020-08-24 15:32 ` [PULL v1 0/8] Xilinx queue 2020-08-14 Peter Maydell
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