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| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-10-20 19:00:50 +0200 |
|---|---|---|
| committer | Jason A. Donenfeld <Jason@zx2c4.com> | 2017-10-31 17:22:49 +0100 |
| commit | cb71dee9a64ee3e18ce4002d9ca54d97d3d5a106 (patch) | |
| tree | 31eb0334376b928558743b1d9296a0e2a0c59170 /src/compat | |
| parent | ca0ecdcc7651ca41e40996ee0e377136e4a319bf (diff) | |
crypto/avx: make sure we can actually use ymm registers
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Diffstat (limited to 'src/compat')
| -rw-r--r-- | src/compat/compat.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/src/compat/compat.h b/src/compat/compat.h index 1f490c5..419710d 100644 --- a/src/compat/compat.h +++ b/src/compat/compat.h @@ -476,6 +476,26 @@ static int get_device_dump_real(a, b) #define COMPAT_CANNOT_USE_IFF_NO_QUEUE #endif +#if defined(CONFIG_X86_64) +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 4, 0) +#include <asm/user.h> +#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 2, 0) +#include <asm/xsave.h> +#include <asm/xcr.h> +static inline int cpu_has_xfeatures(u64 xfeatures_needed, const char **feature_name) +{ + return xgetbv(XCR_XFEATURE_ENABLED_MASK) & xfeatures_needed; +} +#endif +#ifndef XFEATURE_MASK_YMM +#define XFEATURE_MASK_YMM XSTATE_YMM +#endif +#ifndef XFEATURE_MASK_SSE +#define XFEATURE_MASK_SSE XSTATE_SSE +#endif +#endif +#endif + /* https://lkml.org/lkml/2017/6/23/790 */ #if IS_ENABLED(CONFIG_NF_CONNTRACK) #include <linux/ip.h> |