From: Richard Henderson <1926044@bugs.launchpad.net>
To: qemu-devel@nongnu.org
Subject: [Bug 1926044] Re: QEMU-user doesn't report HWCAP2_MTE
Date: Sun, 25 Apr 2021 19:20:15 -0000 [thread overview]
Message-ID: <161937841594.17574.709434742520574120.malone@chaenomeles.canonical.com> (raw)
In-Reply-To: 161931792564.17271.10395230459178895166.malonedeb@chaenomeles.canonical.com
Yep, there's a whole bunch that have been missed.
** Changed in: qemu
Assignee: (unassigned) => Richard Henderson (rth)
** Changed in: qemu
Status: New => In Progress
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https://bugs.launchpad.net/bugs/1926044
Title:
QEMU-user doesn't report HWCAP2_MTE
Status in QEMU:
In Progress
Bug description:
Reproducible on ffa090bc56e73e287a63261e70ac02c0970be61a
Host Debian 5.10.24 x86_64 GNU
Configured with "configure --disable-system --enable-linux-user
--static"
This one works and prints "OK" as expected:
clang tests/tcg/aarch64/mte-3.c -target aarch64-linux-gnu -fsanitize=memtag -march=armv8+memtag
qemu-aarch64 --cpu max -L /usr/aarch64-linux-gnu ./a.out && echo OK
This one fails and print "0":
cat mytest.c
#include <stdio.h>
#include <sys/auxv.h>
#ifndef HWCAP2_MTE
#define HWCAP2_MTE (1 << 18)
#endif
int main(int ac, char **av)
{
printf("%d\n", (int)(getauxval(AT_HWCAP2) & HWCAP2_MTE));
}
clang mytest.c -target aarch64-linux-gnu -fsanitize=memtag -march=armv8+memtag
qemu-aarch64 --cpu max -L /usr/aarch64-linux-gnu ./a.out
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next prev parent reply other threads:[~2021-04-25 19:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-25 2:32 [Bug 1926044] [NEW] QEMU-user doesn't report HWCAP2_MTE Vitaly Buka
2021-04-25 2:45 ` [Bug 1926044] " Vitaly Buka
2021-04-25 2:47 ` Vitaly Buka
2021-04-25 18:39 ` Peter Maydell
2021-04-25 19:20 ` Richard Henderson [this message]
2021-04-27 21:46 ` Richard Henderson
2021-04-27 23:58 ` Vitaly Buka
2021-04-29 10:54 ` Thomas Huth
2021-05-26 15:42 ` Thomas Huth
2021-08-25 7:10 ` Thomas Huth
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