c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-04-12 22:51:46 +03:00
Code Issues Packages Projects Releases Wiki Activity

linux/simd_x86: remove obsolete kernel feature gates

Browse Source 
Most of the X86_FEATURE_* defines we use were introduced in kernels much
older than those we support, so there's no need to check for them.

For the history, these are the ones being removed, and the kernel
versions/commits where they were introduced:

    <4.6  torvalds/linux@cd4d09ec6f (refactor/consolidation commit)
        OSXSAVE
        BMI1
        BMI2
        AES
        PCLMULQDQ
        MOVBE
        SHA_NI
        AVX512F
        AVX512CD
        AVX512ER
        AVX512PF

    4.6   torvalds/linux@d050049442
        AVX512BW
        AVX512DQ
        AVX512VL

    4.10  torvalds/linux@a8d9df5a50
        AVX512IFMA
        AVX512VBMI

    4.15  torvalds/linux@c128dbfa0f
        VAES
        VPCLMULQDQ

Sponsored-by: TrueNAS
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rob Norris <rob.norris@truenas.com>
Closes #18285
This commit is contained in:
Rob Norris 2026-03-04 11:59:12 +11:00 committed by Brian Behlendorf
parent 1e1d64d665
commit e4b8d6a56f
1 changed files with 14 additions and 103 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

117
include/os/linux/kernel/linux/simd_x86.h
View File

@ -440,15 +440,9 @@ zfs_xgetbv(uint32_t index)
static inline boolean_t
__simd_state_enabled(const uint64_t state)
{
boolean_t has_osxsave;
uint64_t xcr0;
#if defined(X86_FEATURE_OSXSAVE)
has_osxsave = !!boot_cpu_has(X86_FEATURE_OSXSAVE);
#else
has_osxsave = B_FALSE;
#endif
if (!has_osxsave)
if (!boot_cpu_has(X86_FEATURE_OSXSAVE))
return (B_FALSE);
xcr0 = zfs_xgetbv(0);
@ -539,11 +533,7 @@ zfs_avx2_available(void)
static inline boolean_t
zfs_bmi1_available(void)
{
#if defined(X86_FEATURE_BMI1)
return (!!boot_cpu_has(X86_FEATURE_BMI1));
#else
return (B_FALSE);
#endif
}
/*
@ -552,11 +542,7 @@ zfs_bmi1_available(void)
static inline boolean_t
zfs_bmi2_available(void)
{
#if defined(X86_FEATURE_BMI2)
return (!!boot_cpu_has(X86_FEATURE_BMI2));
#else
return (B_FALSE);
#endif
}
/*
@ -565,11 +551,7 @@ zfs_bmi2_available(void)
static inline boolean_t
zfs_aes_available(void)
{
#if defined(X86_FEATURE_AES)
return (!!boot_cpu_has(X86_FEATURE_AES));
#else
return (B_FALSE);
#endif
}
/*
@ -578,11 +560,7 @@ zfs_aes_available(void)
static inline boolean_t
zfs_pclmulqdq_available(void)
{
#if defined(X86_FEATURE_PCLMULQDQ)
return (!!boot_cpu_has(X86_FEATURE_PCLMULQDQ));
#else
return (B_FALSE);
#endif
}
/*
@ -591,11 +569,7 @@ zfs_pclmulqdq_available(void)
static inline boolean_t
zfs_movbe_available(void)
{
#if defined(X86_FEATURE_MOVBE)
return (!!boot_cpu_has(X86_FEATURE_MOVBE));
#else
return (B_FALSE);
#endif
}
/*
@ -604,11 +578,7 @@ zfs_movbe_available(void)
static inline boolean_t
zfs_vaes_available(void)
{
#if defined(X86_FEATURE_VAES)
return (!!boot_cpu_has(X86_FEATURE_VAES));
#else
return (B_FALSE);
#endif
}
/*
@ -617,15 +587,12 @@ zfs_vaes_available(void)
static inline boolean_t
zfs_vpclmulqdq_available(void)
{
#if defined(X86_FEATURE_VPCLMULQDQ)
return (!!boot_cpu_has(X86_FEATURE_VPCLMULQDQ));
#else
return (B_FALSE);
#endif
}
/*
* Check if SHA512 instructions are available
* Kernel added X86_FEATURE_SHA512 in 6.13 (torvalds/linux@a0423af92cb3)
*/
static inline boolean_t
zfs_sha512ext_available(void)
@ -643,11 +610,7 @@ zfs_sha512ext_available(void)
static inline boolean_t
zfs_shani_available(void)
{
#if defined(X86_FEATURE_SHA_NI)
return (!!boot_cpu_has(X86_FEATURE_SHA_NI));
#else
return (B_FALSE);
#endif
}
/*
@ -662,7 +625,7 @@ zfs_shani_available(void)
* AVX512DQ Double-word and Quadword Instructions
* AVX512VL Vector Length Extensions
*
* AVX512IFMA Integer Fused Multiply Add (Not supported by kernel 4.4)
* AVX512IFMA Integer Fused Multiply Add
* AVX512VBMI Vector Byte Manipulation Instructions
*/
@ -672,12 +635,7 @@ zfs_shani_available(void)
static inline boolean_t
zfs_avx512f_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512F)
has_avx512 = !!boot_cpu_has(X86_FEATURE_AVX512F);
#endif
return (has_avx512 && __zmm_enabled());
return (boot_cpu_has(X86_FEATURE_AVX512F) && __zmm_enabled());
}
/*
@ -686,13 +644,7 @@ zfs_avx512f_available(void)
static inline boolean_t
zfs_avx512cd_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512CD)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512CD);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() && boot_cpu_has(X86_FEATURE_AVX512F));
}
/*
@ -701,13 +653,7 @@ zfs_avx512cd_available(void)
static inline boolean_t
zfs_avx512er_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512ER)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512ER);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() && boot_cpu_has(X86_FEATURE_AVX512ER));
}
/*
@ -716,13 +662,7 @@ zfs_avx512er_available(void)
static inline boolean_t
zfs_avx512pf_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512PF)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512PF);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() && boot_cpu_has(X86_FEATURE_AVX512PF));
}
/*
@ -731,14 +671,7 @@ zfs_avx512pf_available(void)
static inline boolean_t
zfs_avx512bw_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512BW)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512BW);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() && boot_cpu_has(X86_FEATURE_AVX512BW));
}
/*
@ -747,13 +680,7 @@ zfs_avx512bw_available(void)
static inline boolean_t
zfs_avx512dq_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512DQ)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512DQ);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() && boot_cpu_has(X86_FEATURE_AVX512DQ));
}
/*
@ -762,13 +689,7 @@ zfs_avx512dq_available(void)
static inline boolean_t
zfs_avx512vl_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512VL)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512VL);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() && boot_cpu_has(X86_FEATURE_AVX512VL));
}
/*
@ -777,13 +698,8 @@ zfs_avx512vl_available(void)
static inline boolean_t
zfs_avx512ifma_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512IFMA)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512IFMA);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() &&
boot_cpu_has(X86_FEATURE_AVX512IFMA));
}
/*
@ -792,13 +708,8 @@ zfs_avx512ifma_available(void)
static inline boolean_t
zfs_avx512vbmi_available(void)
{
boolean_t has_avx512 = B_FALSE;
#if defined(X86_FEATURE_AVX512VBMI)
has_avx512 = boot_cpu_has(X86_FEATURE_AVX512F) &&
boot_cpu_has(X86_FEATURE_AVX512VBMI);
#endif
return (has_avx512 && __zmm_enabled());
return (zfs_avx512f_available() &&
boot_cpu_has(X86_FEATURE_AVX512VBMI));
}
#endif /* defined(__x86) */