[Qemu-devel] [PATCH v3 4/5] linux-user/elfload: enable HWCAP_CPUID for AArch64

Alex Bennée posted 5 patches 7 years, 4 months ago
[Qemu-devel] [PATCH v3 4/5] linux-user/elfload: enable HWCAP_CPUID for AArch64
Posted by Alex Bennée 7 years, 4 months ago
Userspace programs should (in theory) query the ELF HWCAP before
probing these registers. Now we have implemented them all make it
public.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
---
 linux-user/elfload.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/linux-user/elfload.c b/linux-user/elfload.c
index 13bc78d0c8..76d7674649 100644
--- a/linux-user/elfload.c
+++ b/linux-user/elfload.c
@@ -566,6 +566,7 @@ static uint32_t get_elf_hwcap(void)
 
     hwcaps |= ARM_HWCAP_A64_FP;
     hwcaps |= ARM_HWCAP_A64_ASIMD;
+    hwcaps |= ARM_HWCAP_A64_CPUID;
 
     /* probe for the extra features */
 #define GET_FEATURE(feat, hwcap) \
-- 
2.17.1


Re: [Qemu-devel] [PATCH v3 4/5] linux-user/elfload: enable HWCAP_CPUID for AArch64
Posted by Richard Henderson 7 years, 4 months ago
On 06/25/2018 09:00 AM, Alex Bennée wrote:
> Userspace programs should (in theory) query the ELF HWCAP before
> probing these registers. Now we have implemented them all make it
> public.
> 
> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
> ---
>  linux-user/elfload.c | 1 +
>  1 file changed, 1 insertion(+)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>


r~