From: "Khem Raj" <raj.khem@gmail.com>
To: openembedded-core@lists.openembedded.org
Cc: Khem Raj <raj.khem@gmail.com>
Subject: [PATCH] qemumips: Use 34Kf CPU emulation
Date: Tue, 28 Jul 2020 19:28:52 -0700 [thread overview]
Message-ID: <20200729022852.1792061-1-raj.khem@gmail.com> (raw)
Few years ago we switched to using mips32r2 tunings for qemumips however
the default CPU emulation still remained 24Kf which is not optimal for
mips32r2 ISA for qemu [1], therefore switch to recommended 32Kf for CPU
emulation when running qemu in system mode
Boot time to console is ~1s faster with this setting, hopefully this
should speed up qemumips in general
[1] https://www.qemu.org/docs/master/system/target-mips.html#preferred-cpu-models-for-mips-hosts
Signed-off-by: Khem Raj <raj.khem@gmail.com>
---
meta/conf/machine/qemumips.conf | 2 ++
1 file changed, 2 insertions(+)
diff --git a/meta/conf/machine/qemumips.conf b/meta/conf/machine/qemumips.conf
index 31ad754483..4617c3c7b6 100644
--- a/meta/conf/machine/qemumips.conf
+++ b/meta/conf/machine/qemumips.conf
@@ -12,3 +12,5 @@ KERNEL_ALT_IMAGETYPE = "vmlinux.bin"
SERIAL_CONSOLES ?= "115200;ttyS0 115200;ttyS1"
QB_SYSTEM_NAME = "qemu-system-mips"
+
+QB_CPU = "-cpu 34Kf"
--
2.27.0
next reply other threads:[~2020-07-29 2:28 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-07-29 2:28 Khem Raj [this message]
2020-07-29 9:56 ` [OE-core] [PATCH] qemumips: Use 34Kf CPU emulation Richard Purdie
[not found] ` <162630A032FCBA1C.9067@lists.openembedded.org>
2020-07-29 10:13 ` Richard Purdie
2020-07-29 17:58 ` Khem Raj
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