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From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: peter.maydell@linaro.org, qemu-arm@nongnu.org
Subject: [PATCH v5 2/2] hw/core: Disable LPA2 for -machine virt-6.2
Date: Fri,  4 Mar 2022 10:03:01 -1000	[thread overview]
Message-ID: <20220304200301.524525-3-richard.henderson@linaro.org> (raw)
In-Reply-To: <20220304200301.524525-1-richard.henderson@linaro.org>

There is a Linux kernel bug present until v5.12 that prevents
booting with FEAT_LPA2 enabled.  As a workaround for TCG,
disable this feature for machine versions prior to 7.0.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 hw/core/machine.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/core/machine.c b/hw/core/machine.c
index d856485cb4..f3c410fe58 100644
--- a/hw/core/machine.c
+++ b/hw/core/machine.c
@@ -37,7 +37,9 @@
 #include "hw/virtio/virtio.h"
 #include "hw/virtio/virtio-pci.h"
 
-GlobalProperty hw_compat_6_2[] = {};
+GlobalProperty hw_compat_6_2[] = {
+    { "max-arm-cpu", "lpa2", "off" },
+};
 const size_t hw_compat_6_2_len = G_N_ELEMENTS(hw_compat_6_2);
 
 GlobalProperty hw_compat_6_1[] = {
-- 
2.25.1



      parent reply	other threads:[~2022-03-04 20:07 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-03-04 20:02 [PATCH v5 0/2] target/arm: Enable LPA2 Richard Henderson
2022-03-04 20:03 ` [PATCH v5 1/2] target/arm: Provide cpu property for controling FEAT_LPA2 Richard Henderson
2022-03-04 20:03 ` Richard Henderson [this message]

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