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From: "Roger Pau Monné" <roger.pau@citrix.com>
To: Stefano Stabellini <sstabellini@kernel.org>
Cc: <xen-devel@lists.xenproject.org>, <jbeulich@suse.com>,
	<andrew.cooper3@citrix.com>, <wl@xen.org>, <iwj@xenproject.org>,
	<anthony.perard@citrix.com>
Subject: Re: [PATCH for-next] configure: probe for gcc -m32 integer sizes
Date: Wed, 24 Feb 2021 11:20:47 +0100	[thread overview]
Message-ID: <YDYof8YTAViDlDz/@Air-de-Roger> (raw)
In-Reply-To: <alpine.DEB.2.21.2102231648580.3234@sstabellini-ThinkPad-T480s>

On Tue, Feb 23, 2021 at 05:08:43PM -0800, Stefano Stabellini wrote:
> The hvmloader build on Alpine Linux x86_64 currenly fails:
> 
> 
> hvmloader.c: In function 'init_vm86_tss':
> hvmloader.c:202:39: error: left shift count >= width of type [-Werror=shift-count-overflow]
>   202 |                   ((uint64_t)TSS_SIZE << 32) | virt_to_phys(tss));
> 
> util.c: In function 'get_cpu_mhz':
> util.c:824:15: error: conversion from 'long long unsigned int' to 'uint64_t' {aka 'long unsigned int'} changes value from
> '4294967296000000' to '0' [-Werror=overflow]
>   824 |     cpu_khz = 1000000ull << 32;
> 
> 
> The root cause of the issue is that gcc -m32 picks up headers meant for
> 64-bit builds.

I'm working on getting hvmloader to build standalone without using any
system headers, which I think it's a worthwhile change to do rather
than this configure bodge. Will post the series now.

Thanks, Roger.


      parent reply	other threads:[~2021-02-24 10:21 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-24  1:08 [PATCH for-next] configure: probe for gcc -m32 integer sizes Stefano Stabellini
2021-02-24  7:26 ` Jan Beulich
2021-02-24 10:20 ` Roger Pau Monné [this message]

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