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Re: Recompile QEMU with frame-pointers

From: Salvatore Mazzarino
Subject: Re: Recompile QEMU with frame-pointers
Date: Thu, 28 Jan 2021 18:03:47 +0000

I have compiled QEMU with the following flags

../configure \
--enable-werror \
--enable-trace-backend=simple \
--enable-debug \
--target-list="x86_64-softmmu" \
--disable-gcrypt \
--enable-nettle \
--enable-docs \
--enable-fdt=system \
--enable-slirp=system \

what I still get when I run perf command bcc/tools/profile is 

qemu-system-x86;[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown];[unknown] 1

Any idea? 

On 27 January 2021 at 15:14:54, Salvatore Mazzarino (apocalipse89@gmail.com) wrote:

I’m trying to profile my QEMU process but what I get is a stack full of unknown.

I would then need to recompile QEMU with -fno-omit-frame-pointer.

Do you know if there is a version already built for that purpose?

Thank you

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