From: Paolo Bonzini <pbonzini@redhat.com>
To: Sean Christopherson <seanjc@google.com>,
Marc Zyngier <maz@kernel.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>
Cc: James Morse <james.morse@arm.com>,
Alexandru Elisei <alexandru.elisei@arm.com>,
Suzuki K Poulose <suzuki.poulose@arm.com>,
Oliver Upton <oliver.upton@linux.dev>, Tom Rix <trix@redhat.com>,
kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
kvmarm@lists.linux.dev, kvmarm@lists.cs.columbia.edu,
linux-riscv@lists.infradead.org, llvm@lists.linux.dev,
linux-kernel@vger.kernel.org,
Ricardo Koller <ricarkol@google.com>,
Aaron Lewis <aaronlewis@google.com>,
Raghavendra Rao Ananta <rananta@google.com>
Subject: Re: [PATCH 09/14] KVM: selftests: Explicitly disable builtins for mem*() overrides
Date: Sat, 24 Dec 2022 10:16:55 +0100 [thread overview]
Message-ID: <f53ed5b9-156c-e809-08e2-050217a970a5@redhat.com> (raw)
In-Reply-To: <20221213001653.3852042-10-seanjc@google.com>
On 12/13/22 01:16, Sean Christopherson wrote:
> Explicitly disable the compiler's builtin memcmp(), memcpy(), and
> memset(). Because only lib/string_override.c is built with -ffreestanding,
> the compiler reserves the right to do what it wants and can try to link the
> non-freestanding code to its own crud.
>
> /usr/bin/x86_64-linux-gnu-ld: /lib/x86_64-linux-gnu/libc.a(memcmp.o): in function `memcmp_ifunc':
> (.text+0x0): multiple definition of `memcmp'; tools/testing/selftests/kvm/lib/string_override.o:
> tools/testing/selftests/kvm/lib/string_override.c:15: first defined here
> clang: error: linker command failed with exit code 1 (use -v to see invocation)
Hmm, that's weird though. I think it's an effect of ifunc and maybe
even a linker bug. The patch makes sense anyway.
Paolo
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-12-24 15:14 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-13 0:16 [PATCH 00/14] KVM: selftests: Clang fixes, Makefile cleanup Sean Christopherson
2022-12-13 0:16 ` [PATCH 01/14] KVM: selftests: Define literal to asm constraint in aarch64 as unsigned long Sean Christopherson
2022-12-13 9:51 ` Philippe Mathieu-Daudé
2022-12-13 0:16 ` [PATCH 02/14] KVM: selftests: Delete dead code in x86_64/vmx_tsc_adjust_test.c Sean Christopherson
2022-12-13 0:16 ` [PATCH 03/14] KVM: selftests: Fix divide-by-zero bug in memslot_perf_test Sean Christopherson
2022-12-13 9:46 ` Philippe Mathieu-Daudé
2022-12-13 0:16 ` [PATCH 04/14] KVM: selftests: Use pattern matching in .gitignore Sean Christopherson
2022-12-13 0:16 ` [PATCH 05/14] KVM: selftests: Fix a typo in x86-64's kvm_get_cpu_address_width() Sean Christopherson
2022-12-13 9:47 ` Philippe Mathieu-Daudé
2022-12-13 0:16 ` [PATCH 06/14] KVM: selftests: Rename UNAME_M to ARCH_DIR, fill explicitly for x86 Sean Christopherson
2022-12-13 20:03 ` Sean Christopherson
2022-12-14 9:43 ` Marc Zyngier
2022-12-24 9:12 ` Paolo Bonzini
2022-12-13 0:16 ` [PATCH 07/14] KVM: selftests: Use proper function prototypes in probing code Sean Christopherson
2022-12-13 9:48 ` Philippe Mathieu-Daudé
2022-12-13 0:16 ` [PATCH 08/14] KVM: selftests: Probe -no-pie with actual CFLAGS used to compile Sean Christopherson
2022-12-13 0:16 ` [PATCH 09/14] KVM: selftests: Explicitly disable builtins for mem*() overrides Sean Christopherson
2022-12-24 9:16 ` Paolo Bonzini [this message]
2022-12-13 0:16 ` [PATCH 10/14] KVM: selftests: Include lib.mk before consuming $(CC) Sean Christopherson
2022-12-24 9:18 ` Paolo Bonzini
2022-12-13 0:16 ` [PATCH 11/14] KVM: selftests: Disable "gnu-variable-sized-type-not-at-end" warning Sean Christopherson
2022-12-13 1:36 ` Nick Desaulniers
2022-12-13 2:13 ` Sean Christopherson
2023-01-11 16:23 ` Paolo Bonzini
2022-12-13 0:16 ` [PATCH 12/14] KVM: selftests: Use wildcards to find library source files Sean Christopherson
2022-12-24 9:23 ` Paolo Bonzini
2023-01-04 1:09 ` Sean Christopherson
2022-12-13 0:16 ` [PATCH 13/14] KVM: selftests: Use wildcards to find targets and test " Sean Christopherson
2022-12-13 0:16 ` [PATCH 14/14] KVM: selftests: Enable RSEQ test for RISC-V Sean Christopherson
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=f53ed5b9-156c-e809-08e2-050217a970a5@redhat.com \
--to=pbonzini@redhat.com \
--cc=aaronlewis@google.com \
--cc=alexandru.elisei@arm.com \
--cc=aou@eecs.berkeley.edu \
--cc=james.morse@arm.com \
--cc=kvm@vger.kernel.org \
--cc=kvmarm@lists.cs.columbia.edu \
--cc=kvmarm@lists.linux.dev \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-riscv@lists.infradead.org \
--cc=llvm@lists.linux.dev \
--cc=maz@kernel.org \
--cc=nathan@kernel.org \
--cc=ndesaulniers@google.com \
--cc=oliver.upton@linux.dev \
--cc=palmer@dabbelt.com \
--cc=paul.walmsley@sifive.com \
--cc=rananta@google.com \
--cc=ricarkol@google.com \
--cc=seanjc@google.com \
--cc=suzuki.poulose@arm.com \
--cc=trix@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).