arm64: don't pull uaccess.h into *.S

Split asm-only parts of arm64 uaccess.h into a new header and use that
from *.S.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/arch/arm64/include/asm/asm-uaccess.h b/arch/arm64/include/asm/asm-uaccess.h
new file mode 100644 (file)
index 0000000..df411f3
--- /dev/null
+++ b/arch/arm64/include/asm/asm-uaccess.h
@@ -0,0 +1,65 @@
+#ifndef __ASM_ASM_UACCESS_H
+#define __ASM_ASM_UACCESS_H
+
+#include <asm/alternative.h>
+#include <asm/kernel-pgtable.h>
+#include <asm/sysreg.h>
+#include <asm/assembler.h>
+
+/*
+ * User access enabling/disabling macros.
+ */
+#ifdef CONFIG_ARM64_SW_TTBR0_PAN
+       .macro  __uaccess_ttbr0_disable, tmp1
+       mrs     \tmp1, ttbr1_el1                // swapper_pg_dir
+       add     \tmp1, \tmp1, #SWAPPER_DIR_SIZE // reserved_ttbr0 at the end of swapper_pg_dir
+       msr     ttbr0_el1, \tmp1                // set reserved TTBR0_EL1
+       isb
+       .endm
+
+       .macro  __uaccess_ttbr0_enable, tmp1
+       get_thread_info \tmp1
+       ldr     \tmp1, [\tmp1, #TSK_TI_TTBR0]   // load saved TTBR0_EL1
+       msr     ttbr0_el1, \tmp1                // set the non-PAN TTBR0_EL1
+       isb
+       .endm
+
+       .macro  uaccess_ttbr0_disable, tmp1
+alternative_if_not ARM64_HAS_PAN
+       __uaccess_ttbr0_disable \tmp1
+alternative_else_nop_endif
+       .endm
+
+       .macro  uaccess_ttbr0_enable, tmp1, tmp2
+alternative_if_not ARM64_HAS_PAN
+       save_and_disable_irq \tmp2              // avoid preemption
+       __uaccess_ttbr0_enable \tmp1
+       restore_irq \tmp2
+alternative_else_nop_endif
+       .endm
+#else
+       .macro  uaccess_ttbr0_disable, tmp1
+       .endm
+
+       .macro  uaccess_ttbr0_enable, tmp1, tmp2
+       .endm
+#endif
+
+/*
+ * These macros are no-ops when UAO is present.
+ */
+       .macro  uaccess_disable_not_uao, tmp1
+       uaccess_ttbr0_disable \tmp1
+alternative_if ARM64_ALT_PAN_NOT_UAO
+       SET_PSTATE_PAN(1)
+alternative_else_nop_endif
+       .endm
+
+       .macro  uaccess_enable_not_uao, tmp1, tmp2
+       uaccess_ttbr0_enable \tmp1, \tmp2
+alternative_if ARM64_ALT_PAN_NOT_UAO
+       SET_PSTATE_PAN(0)
+alternative_else_nop_endif
+       .endm
+
+#endif

diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h
index d26750ca6e066b9f0f267025512b3e2bdef13744..46da3ea638bbdfc858161f3e00ac560562692359 100644 (file)
--- a/arch/arm64/include/asm/uaccess.h
+++ b/arch/arm64/include/asm/uaccess.h
@@ -22,8 +22,6 @@
 #include <asm/kernel-pgtable.h>
 #include <asm/sysreg.h>
 
-#ifndef __ASSEMBLY__
-
 /*
  * User space memory access functions
  */
@@ -424,66 +422,4 @@ extern long strncpy_from_user(char *dest, const char __user *src, long count);
 extern __must_check long strlen_user(const char __user *str);
 extern __must_check long strnlen_user(const char __user *str, long n);
 
-#else  /* __ASSEMBLY__ */
-
-#include <asm/assembler.h>
-
-/*
- * User access enabling/disabling macros.
- */
-#ifdef CONFIG_ARM64_SW_TTBR0_PAN
-       .macro  __uaccess_ttbr0_disable, tmp1
-       mrs     \tmp1, ttbr1_el1                // swapper_pg_dir
-       add     \tmp1, \tmp1, #SWAPPER_DIR_SIZE // reserved_ttbr0 at the end of swapper_pg_dir
-       msr     ttbr0_el1, \tmp1                // set reserved TTBR0_EL1
-       isb
-       .endm
-
-       .macro  __uaccess_ttbr0_enable, tmp1
-       get_thread_info \tmp1
-       ldr     \tmp1, [\tmp1, #TSK_TI_TTBR0]   // load saved TTBR0_EL1
-       msr     ttbr0_el1, \tmp1                // set the non-PAN TTBR0_EL1
-       isb
-       .endm
-
-       .macro  uaccess_ttbr0_disable, tmp1
-alternative_if_not ARM64_HAS_PAN
-       __uaccess_ttbr0_disable \tmp1
-alternative_else_nop_endif
-       .endm
-
-       .macro  uaccess_ttbr0_enable, tmp1, tmp2
-alternative_if_not ARM64_HAS_PAN
-       save_and_disable_irq \tmp2              // avoid preemption
-       __uaccess_ttbr0_enable \tmp1
-       restore_irq \tmp2
-alternative_else_nop_endif
-       .endm
-#else
-       .macro  uaccess_ttbr0_disable, tmp1
-       .endm
-
-       .macro  uaccess_ttbr0_enable, tmp1, tmp2
-       .endm
-#endif
-
-/*
- * These macros are no-ops when UAO is present.
- */
-       .macro  uaccess_disable_not_uao, tmp1
-       uaccess_ttbr0_disable \tmp1
-alternative_if ARM64_ALT_PAN_NOT_UAO
-       SET_PSTATE_PAN(1)
-alternative_else_nop_endif
-       .endm
-
-       .macro  uaccess_enable_not_uao, tmp1, tmp2
-       uaccess_ttbr0_enable \tmp1, \tmp2
-alternative_if ARM64_ALT_PAN_NOT_UAO
-       SET_PSTATE_PAN(0)
-alternative_else_nop_endif
-       .endm
-
-#endif /* __ASSEMBLY__ */
-
 #endif /* __ASM_UACCESS_H */

diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S
index a7504f40d7ee45f7d8a2ac3dcc9bcbff397eb708..923841ffe4a981669be9bea76d09540244550a1f 100644 (file)
--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -31,7 +31,7 @@
 #include <asm/memory.h>
 #include <asm/ptrace.h>
 #include <asm/thread_info.h>
-#include <linux/uaccess.h>
+#include <asm/asm-uaccess.h>
 #include <asm/unistd.h>
 
 /*

diff --git a/arch/arm64/lib/clear_user.S b/arch/arm64/lib/clear_user.S
index add4a1334085b1eef342155089bb3d2c4b560621..e88fb99c15616397e6c4bbc0dd9c26e504688d97 100644 (file)
--- a/arch/arm64/lib/clear_user.S
+++ b/arch/arm64/lib/clear_user.S
@@ -17,7 +17,7 @@
  */
 #include <linux/linkage.h>
 
-#include <linux/uaccess.h>
+#include <asm/asm-uaccess.h>
 
        .text
 

diff --git a/arch/arm64/lib/copy_from_user.S b/arch/arm64/lib/copy_from_user.S
index fd6cd05593f99ea8bff2e7bdae6168d5639067b0..4b5d826895ff161347dec9dd48710d08bcc49699 100644 (file)
--- a/arch/arm64/lib/copy_from_user.S
+++ b/arch/arm64/lib/copy_from_user.S
@@ -17,7 +17,7 @@
 #include <linux/linkage.h>
 
 #include <asm/cache.h>
-#include <linux/uaccess.h>
+#include <asm/asm-uaccess.h>
 
 /*
  * Copy from user space to a kernel buffer (alignment handled by the hardware)

diff --git a/arch/arm64/lib/copy_in_user.S b/arch/arm64/lib/copy_in_user.S
index d828540ded6facff4c578c95c75a4163b584184d..47184c3a97da6faa4cce2e31b37f91d95d361ee6 100644 (file)
--- a/arch/arm64/lib/copy_in_user.S
+++ b/arch/arm64/lib/copy_in_user.S
@@ -19,7 +19,7 @@
 #include <linux/linkage.h>
 
 #include <asm/cache.h>
-#include <linux/uaccess.h>
+#include <asm/asm-uaccess.h>
 
 /*
  * Copy from user space to user space (alignment handled by the hardware)

diff --git a/arch/arm64/lib/copy_to_user.S b/arch/arm64/lib/copy_to_user.S
index 3e6ae2663b8221033eee04a0667b04f43f84db66..351f0766f7a61c54a47427c6a6845521fda6066d 100644 (file)
--- a/arch/arm64/lib/copy_to_user.S
+++ b/arch/arm64/lib/copy_to_user.S
@@ -17,7 +17,7 @@
 #include <linux/linkage.h>
 
 #include <asm/cache.h>
-#include <linux/uaccess.h>
+#include <asm/asm-uaccess.h>
 
 /*
  * Copy to user space from a kernel buffer (alignment handled by the hardware)

diff --git a/arch/arm64/mm/cache.S b/arch/arm64/mm/cache.S
index 17f422a4dc5538a534b885da74e85ea251e25a3a..83c27b6e6dca31007d3b9ae5bc1c48d66456e757 100644 (file)
--- a/arch/arm64/mm/cache.S
+++ b/arch/arm64/mm/cache.S
@@ -23,7 +23,7 @@
 #include <asm/assembler.h>
 #include <asm/cpufeature.h>
 #include <asm/alternative.h>
-#include <linux/uaccess.h>
+#include <asm/asm-uaccess.h>
 
 /*
  *     flush_icache_range(start,end)

diff --git a/arch/arm64/xen/hypercall.S b/arch/arm64/xen/hypercall.S
index 47cf3f9d89ffffb13ce020b9197d4ad962892681..947830a459d2ca6ef83fb92a4d168b55ea5c659d 100644 (file)
--- a/arch/arm64/xen/hypercall.S
+++ b/arch/arm64/xen/hypercall.S
@@ -49,7 +49,7 @@
 
 #include <linux/linkage.h>
 #include <asm/assembler.h>
-#include <linux/uaccess.h>
+#include <asm/asm-uaccess.h>
 #include <xen/interface/xen.h>