lkml.org 
[lkml]   [2020]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[RFC PATCH V3 06/11] riscv: Add has_vector detect
Date
From: Guo Ren <guoren@linux.alibaba.com>

This patch is to detect "has_vector" at time of CPU feature
parsing.

Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
---
arch/riscv/kernel/cpufeature.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/riscv/kernel/cpufeature.c b/arch/riscv/kernel/cpufeature.c
index c8527d770c98..c9ab24e3c79e 100644
--- a/arch/riscv/kernel/cpufeature.c
+++ b/arch/riscv/kernel/cpufeature.c
@@ -16,6 +16,9 @@ unsigned long elf_hwcap __read_mostly;
#ifdef CONFIG_FPU
bool has_fpu __read_mostly;
#endif
+#ifdef CONFIG_VECTOR
+bool has_vector __read_mostly;
+#endif

void riscv_fill_hwcap(void)
{
@@ -73,4 +76,9 @@ void riscv_fill_hwcap(void)
if (elf_hwcap & (COMPAT_HWCAP_ISA_F | COMPAT_HWCAP_ISA_D))
has_fpu = true;
#endif
+
+#ifdef CONFIG_VECTOR
+ if (elf_hwcap & COMPAT_HWCAP_ISA_V)
+ has_vector = true;
+#endif
}
--
2.17.0
\
 
 \ /
  Last update: 2020-03-08 10:54    [W:0.084 / U:0.200 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site