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From: bugzilla-daemon@bugzilla.kernel.org
To: kvm@vger.kernel.org
Subject: [Bug 207173] kvm compiling problem 5.6.x kvm_main.c:2236:42: error: ‘nr_pages_avail’ may be used uninitialized in this function
Date: Wed, 15 Apr 2020 05:43:31 +0000	[thread overview]
Message-ID: <bug-207173-28872-2RPTqfhe5D@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-207173-28872@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=207173

zoran.davidovac@gmail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|blocking                    |enhancement

--- Comment #7 from zoran.davidovac@gmail.com ---
Interesting, 

I did not know that -O3 is not supported on x86 or x86_64,
in kernel Doc it does not say it is not supported and
It worked very well until now :)

So this happen also to size optimized kernel?

But now I also know why O3 is disabled in menuconfig :)

KBUILD_CFLAGS += -O2
else ifdef CONFIG_CC_OPTIMIZE_FOR_PERFORMANCE_O3
KBUILD_CFLAGS += -O3
else ifdef CONFIG_CC_OPTIMIZE_FOR_SIZE
KBUILD_CFLAGS += -Os
endif

I've read somewhere that on arm -O3 is related to implicit parallelism 

Changed category to enhancement, let me know if I need to change anything else?

thx.

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  parent reply	other threads:[~2020-04-15  5:43 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-09 14:25 [Bug 207173] New: kvm compiling problem 5.6.x kvm_main.c:2236:42: error: ‘nr_pages_avail’ may be used uninitialized in this function bugzilla-daemon
2020-04-12  7:28 ` [Bug 207173] " bugzilla-daemon
2020-04-13 23:41 ` bugzilla-daemon
2020-04-14  9:19 ` bugzilla-daemon
2020-04-14 15:37 ` bugzilla-daemon
2020-04-14 18:53 ` bugzilla-daemon
2020-04-15  1:19 ` bugzilla-daemon
2020-04-15  5:43 ` bugzilla-daemon [this message]
2020-04-26  2:10 ` bugzilla-daemon
2020-04-27 16:45 ` bugzilla-daemon
2020-05-10  2:04 ` bugzilla-daemon
2020-05-12 10:30 ` bugzilla-daemon
2020-05-12 14:37 ` bugzilla-daemon

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