kernelPatches: drop export_kernel_fpu_functions

Hasn't been necessary since ZFS 0.8.3

pkgs/os-specific/linux/kernel/export_kernel_fpu_functions_4_14.patch

@@ -1,60 +0,0 @@
-From 245e0f743d814c9ff2d1c748175e321301eb16cf Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
-Date: Thu, 2 May 2019 05:28:08 +0100
-Subject: [PATCH] x86/fpu: Export __kernel_fpu_{begin,end}()
-
-This partially undo commit:
-
-12209993  x86/fpu: Don't export __kernel_fpu_{begin,end}()
-
-We need this symbol in zfs for AES-NI/AVX support.
----
- arch/x86/include/asm/fpu/api.h | 2 ++
- arch/x86/kernel/fpu/core.c     | 6 ++++--
- 2 files changed, 6 insertions(+), 2 deletions(-)
-
-diff --git a/arch/x86/include/asm/fpu/api.h b/arch/x86/include/asm/fpu/api.h
-index b56d504af6545..7d53388d266ea 100644
---- a/arch/x86/include/asm/fpu/api.h
-+++ b/arch/x86/include/asm/fpu/api.h
-@@ -18,6 +18,8 @@
-  * If you intend to use the FPU in softirq you need to check first with
-  * irq_fpu_usable() if it is possible.
-  */
-+extern void __kernel_fpu_begin(void);
-+extern void __kernel_fpu_end(void);
- extern void kernel_fpu_begin(void);
- extern void kernel_fpu_end(void);
- extern bool irq_fpu_usable(void);
-diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
-index 2e5003fef51a9..2ea85b32421a0 100644
---- a/arch/x86/kernel/fpu/core.c
-+++ b/arch/x86/kernel/fpu/core.c
-@@ -93,7 +93,7 @@ bool irq_fpu_usable(void)
- }
- EXPORT_SYMBOL(irq_fpu_usable);
- 
--static void __kernel_fpu_begin(void)
-+void __kernel_fpu_begin(void)
- {
- 	struct fpu *fpu = &current->thread.fpu;
- 
-@@ -111,8 +111,9 @@ static void __kernel_fpu_begin(void)
- 		__cpu_invalidate_fpregs_state();
- 	}
- }
-+EXPORT_SYMBOL(__kernel_fpu_begin);
- 
--static void __kernel_fpu_end(void)
-+void __kernel_fpu_end(void)
- {
- 	struct fpu *fpu = &current->thread.fpu;
- 
-@@ -121,6 +122,7 @@ static void __kernel_fpu_end(void)
- 
- 	kernel_fpu_enable();
- }
-+EXPORT_SYMBOL(__kernel_fpu_end);
- 
- void kernel_fpu_begin(void)
- {

pkgs/os-specific/linux/kernel/export_kernel_fpu_functions_5_3.patch

@@ -1,42 +0,0 @@
-From 1e010beda2896bdf3082fb37a3e49f8ce20e04d8 Mon Sep 17 00:00:00 2001
-From: =?UTF-8?q?J=C3=B6rg=20Thalheim?= <joerg@thalheim.io>
-Date: Thu, 2 May 2019 05:28:08 +0100
-Subject: [PATCH] x86/fpu: Export kernel_fpu_{begin,end}() with
- EXPORT_SYMBOL_GPL
-MIME-Version: 1.0
-Content-Type: text/plain; charset=UTF-8
-Content-Transfer-Encoding: 8bit
-
-We need these symbols in zfs as the fpu implementation breaks userspace:
-
-https://github.com/zfsonlinux/zfs/issues/9346
-Signed-off-by: Jörg Thalheim <joerg@thalheim.io>
----
- arch/x86/kernel/fpu/core.c | 4 ++--
- 1 file changed, 2 insertions(+), 2 deletions(-)
-
-diff --git a/arch/x86/kernel/fpu/core.c b/arch/x86/kernel/fpu/core.c
-index 12c70840980e..352538b3bb5d 100644
---- a/arch/x86/kernel/fpu/core.c
-+++ b/arch/x86/kernel/fpu/core.c
-@@ -102,7 +102,7 @@ void kernel_fpu_begin(void)
- 	}
- 	__cpu_invalidate_fpregs_state();
- }
--EXPORT_SYMBOL_GPL(kernel_fpu_begin);
-+EXPORT_SYMBOL(kernel_fpu_begin);
- 
- void kernel_fpu_end(void)
- {
-@@ -111,7 +111,7 @@ void kernel_fpu_end(void)
- 	this_cpu_write(in_kernel_fpu, false);
- 	preempt_enable();
- }
--EXPORT_SYMBOL_GPL(kernel_fpu_end);
-+EXPORT_SYMBOL(kernel_fpu_end);
- 
- /*
-  * Save the FPU state (mark it for reload if necessary):
--- 
-2.23.0
-

pkgs/os-specific/linux/kernel/patches.nix

@@ -79,17 +79,6 @@
       patch = ./rtl8761b-support.patch;
     };
 
-  export_kernel_fpu_functions = {
-    "4.14" = {
-      name = "export_kernel_fpu_functions";
-      patch = ./export_kernel_fpu_functions_4_14.patch;
-    };
-    "5.3" = {
-      name = "export_kernel_fpu_functions";
-      patch = ./export_kernel_fpu_functions_5_3.patch;
-    };
-  };
-
   export-rt-sched-migrate = {
     name = "export-rt-sched-migrate";
     patch = ./export-rt-sched-migrate.patch;

pkgs/top-level/all-packages.nix

@@ -18940,7 +18940,6 @@ in
         # when adding a new linux version
         kernelPatches.cpu-cgroup-v2."4.11"
         kernelPatches.modinst_arg_list_too_long
-        kernelPatches.export_kernel_fpu_functions."4.14"
       ];
   };
 
@@ -18949,7 +18948,6 @@ in
       [ kernelPatches.bridge_stp_helper
         kernelPatches.request_key_helper
         kernelPatches.modinst_arg_list_too_long
-        kernelPatches.export_kernel_fpu_functions."4.14"
       ];
   };
 
@@ -18958,7 +18956,6 @@ in
       kernelPatches.bridge_stp_helper
       kernelPatches.request_key_helper
       kernelPatches.rtl8761b_support
-      kernelPatches.export_kernel_fpu_functions."5.3"
     ];
   };
 
@@ -18966,7 +18963,6 @@ in
     kernelPatches = [
       kernelPatches.bridge_stp_helper
       kernelPatches.request_key_helper
-      kernelPatches.export_kernel_fpu_functions."5.3"
     ];
   };
 
@@ -18974,7 +18970,6 @@ in
     kernelPatches = [
       kernelPatches.bridge_stp_helper
       kernelPatches.request_key_helper
-      kernelPatches.export_kernel_fpu_functions."5.3"
     ];
   };
 
@@ -18982,7 +18977,6 @@ in
     kernelPatches = [
       kernelPatches.bridge_stp_helper
       kernelPatches.request_key_helper
-      kernelPatches.export_kernel_fpu_functions."5.3"
     ];
   };
 
@@ -18990,7 +18984,6 @@ in
     kernelPatches = [
       kernelPatches.bridge_stp_helper
       kernelPatches.request_key_helper
-      kernelPatches.export_kernel_fpu_functions."5.3"
       kernelPatches.export-rt-sched-migrate
     ];
   };
@@ -19021,7 +19014,6 @@ in
     kernelPatches = [
       kernelPatches.bridge_stp_helper
       kernelPatches.request_key_helper
-      kernelPatches.export_kernel_fpu_functions."5.3"
     ];
   };
 
@@ -19029,7 +19021,6 @@ in
     kernelPatches = [
       kernelPatches.bridge_stp_helper
       kernelPatches.request_key_helper
-      kernelPatches.export_kernel_fpu_functions."5.3"
     ];
   };