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linux-user: Fix /proc/cpuinfo output for hppa

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The hppa architectures provides an own output for the emulated
/proc/cpuinfo file.

Some userspace applications count (even if that's not the recommended
way) the number of lines which start with "processor:" and assume that
this number then reflects the number of online CPUs. Since those 3
architectures don't provide any such line, applications may assume "0"
CPUs.  One such issue can be seen in debian bug report:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1024653

Avoid such issues by adding a "processor:" line for each of the online
CPUs.

Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <Y9QvyRSq1I1k5/JW@p100>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Helge Deller 2023-01-27 21:10:49 +01:00 committed by Laurent Vivier
parent cb88b7c214
commit e0174afeea
1 changed files with 11 additions and 5 deletions
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16
linux-user/syscall.c
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@ -8232,11 +8232,17 @@ static int open_cpuinfo(CPUArchState *cpu_env, int fd)
#if defined(TARGET_HPPA)
static int open_cpuinfo(CPUArchState *cpu_env, int fd)
{
dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
dprintf(fd, "capabilities\t: os32\n");
dprintf(fd, "model\t\t: 9000/778/B160L\n");
dprintf(fd, "model name\t: Merlin L2 160 QEMU (9000/778/B160L)\n");
int i, num_cpus;
num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
for (i = 0; i < num_cpus; i++) {
dprintf(fd, "processor\t: %d\n", i);
dprintf(fd, "cpu family\t: PA-RISC 1.1e\n");
dprintf(fd, "cpu\t\t: PA7300LC (PCX-L2)\n");
dprintf(fd, "capabilities\t: os32\n");
dprintf(fd, "model\t\t: 9000/778/B160L - "
"Merlin L2 160 QEMU (9000/778/B160L)\n\n");
}
return 0;
}
#endif