Patch has been merged:
https://gitlab.com/qemu-project/qemu/-/commit/68948d18224b93361e28
** Changed in: qemu
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1926044
Title:
QEMU-user doesn't report HWCAP2_MTE
Status in QEMU:
Fix Committed
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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