diff options
Diffstat (limited to 'sys-fs/zfs-kmod/files/zfs-kmod-2.2.2-arm64-neon.patch')
| -rw-r--r-- | sys-fs/zfs-kmod/files/zfs-kmod-2.2.2-arm64-neon.patch | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/sys-fs/zfs-kmod/files/zfs-kmod-2.2.2-arm64-neon.patch b/sys-fs/zfs-kmod/files/zfs-kmod-2.2.2-arm64-neon.patch new file mode 100644 index 000000000000..54121adcdca3 --- /dev/null +++ b/sys-fs/zfs-kmod/files/zfs-kmod-2.2.2-arm64-neon.patch @@ -0,0 +1,100 @@ +https://bugs.gentoo.org/904657 +https://github.com/openzfs/zfs/issues/14555 +https://github.com/openzfs/zfs/commit/976bf9b6a61919638d42ed79cd207132785d128a + +From 976bf9b6a61919638d42ed79cd207132785d128a Mon Sep 17 00:00:00 2001 +From: Shengqi Chen <harry-chen@outlook.com> +Date: Tue, 9 Jan 2024 08:05:24 +0800 +Subject: [PATCH] Linux 6.2 compat: add check for kernel_neon_* availability + +This patch adds check for `kernel_neon_*` symbols on arm and arm64 +platforms to address the following issues: + +1. Linux 6.2+ on arm64 has exported them with `EXPORT_SYMBOL_GPL`, so + license compatibility must be checked before use. +2. On both arm and arm64, the definitions of these symbols are guarded + by `CONFIG_KERNEL_MODE_NEON`, but their declarations are still + present. Checking in configuration phase only leads to MODPOST + errors (undefined references). + +Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> +Signed-off-by: Shengqi Chen <harry-chen@outlook.com> +Closes #15711 +Closes #14555 +Closes: #15401 +--- a/config/kernel-fpu.m4 ++++ b/config/kernel-fpu.m4 +@@ -79,6 +79,12 @@ AC_DEFUN([ZFS_AC_KERNEL_SRC_FPU], [ + __kernel_fpu_end(); + ], [], [ZFS_META_LICENSE]) + ++ ZFS_LINUX_TEST_SRC([kernel_neon], [ ++ #include <asm/neon.h> ++ ], [ ++ kernel_neon_begin(); ++ kernel_neon_end(); ++ ], [], [ZFS_META_LICENSE]) + ]) + + AC_DEFUN([ZFS_AC_KERNEL_FPU], [ +@@ -105,9 +111,20 @@ AC_DEFUN([ZFS_AC_KERNEL_FPU], [ + AC_DEFINE(KERNEL_EXPORTS_X86_FPU, 1, + [kernel exports FPU functions]) + ],[ +- AC_MSG_RESULT(internal) +- AC_DEFINE(HAVE_KERNEL_FPU_INTERNAL, 1, +- [kernel fpu internal]) ++ dnl # ++ dnl # ARM neon symbols (only on arm and arm64) ++ dnl # could be GPL-only on arm64 after Linux 6.2 ++ dnl # ++ ZFS_LINUX_TEST_RESULT([kernel_neon_license],[ ++ AC_MSG_RESULT(kernel_neon_*) ++ AC_DEFINE(HAVE_KERNEL_NEON, 1, ++ [kernel has kernel_neon_* functions]) ++ ],[ ++ # catch-all ++ AC_MSG_RESULT(internal) ++ AC_DEFINE(HAVE_KERNEL_FPU_INTERNAL, 1, ++ [kernel fpu internal]) ++ ]) + ]) + ]) + ]) +--- a/include/os/linux/kernel/linux/simd_aarch64.h ++++ b/include/os/linux/kernel/linux/simd_aarch64.h +@@ -71,9 +71,15 @@ + #define ID_AA64PFR0_EL1 sys_reg(3, 0, 0, 1, 0) + #define ID_AA64ISAR0_EL1 sys_reg(3, 0, 0, 6, 0) + ++#if (defined(HAVE_KERNEL_NEON) && defined(CONFIG_KERNEL_MODE_NEON)) + #define kfpu_allowed() 1 + #define kfpu_begin() kernel_neon_begin() + #define kfpu_end() kernel_neon_end() ++#else ++#define kfpu_allowed() 0 ++#define kfpu_begin() do {} while (0) ++#define kfpu_end() do {} while (0) ++#endif + #define kfpu_init() (0) + #define kfpu_fini() do {} while (0) + +--- a/include/os/linux/kernel/linux/simd_arm.h ++++ b/include/os/linux/kernel/linux/simd_arm.h +@@ -53,9 +53,15 @@ + #include <asm/elf.h> + #include <asm/hwcap.h> + ++#if (defined(HAVE_KERNEL_NEON) && defined(CONFIG_KERNEL_MODE_NEON)) + #define kfpu_allowed() 1 + #define kfpu_begin() kernel_neon_begin() + #define kfpu_end() kernel_neon_end() ++#else ++#define kfpu_allowed() 0 ++#define kfpu_begin() do {} while (0) ++#define kfpu_end() do {} while (0) ++#endif + #define kfpu_init() (0) + #define kfpu_fini() do {} while (0) + + |