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Re: [Qemu-devel] libvhost-user: undefined reference to MADV_NOHUGEPAGE
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From: |
Richard Henderson |
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Subject: |
Re: [Qemu-devel] libvhost-user: undefined reference to MADV_NOHUGEPAGE |
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Date: |
Tue, 27 Aug 2019 20:01:17 -0700 |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 |
On 8/27/19 6:42 PM, Sandra Loosemore wrote:
> Sorry if that was not clear. The target is aarch64-none-elf with the provided
> semihosting facilities in QEMU. The host is x86_64-linux-gnu. We deliberately
> link against a pretty old glibc sysroot (looks like version 2.11.1), but we
> did
> that for last year's 3.0 release as well, and haven't made any other changes
> in
> the configure options etc that we use to build QEMU for this target.
Still not clear.
The combination "glibc" and "qemu semihosting" doesn't make sense. The triplet
"aarch64-none-elf" is a gcc thing and has no referent in qemu.
Are you building qemu-system-aarch64 for x86_64-linux, using an old x86_64
sysroot?
In any case, glibc 2.11.1 is definitely out of support. Even CentOS 6 used
2.12 and we don't support that anymore either. Of the current
long-term-support distros, I believe the oldest version of glibc is CentOS 7
with 2.17.
As recently mentioned in
https://lists.gnu.org/archive/html/qemu-devel/2019-08/msg04514.html
we may accept a small patch with a large comment, but there are no guarantees
how long we will keep such workarounds.
I encourage you to re-examine why you're carrying around a 10 year old glibc.
r~