arch/riscv/include/asm/runtime-const.h | 199 +++++++++++++++++++++++++++++++++ arch/riscv/kernel/vmlinux.lds.S | 3 + 2 files changed, 202 insertions(+)
Implement the runtime constant infrastructure for riscv. Use this
infrastructure to generate constants to be used by the d_hash()
function.
This is the riscv variant of commit 94a2bc0f611c ("arm64: add 'runtime
constant' support") and commit e3c92e81711d ("runtime constants: add
x86 architecture support").
Signed-off-by: Charlie Jenkins <charlie@rivosinc.com>
---
Ard brought this to my attention in this patch [1].
[1] https://lore.kernel.org/lkml/CAMj1kXE4DJnwFejNWQu784GvyJO=aGNrzuLjSxiowX_e7nW8QA@mail.gmail.com/
---
Changes in v5:
- Split instructions into 16-bit parcels to avoid alignment (Emil)
- Link to v4: https://lore.kernel.org/r/20250130-runtime_const_riscv-v4-1-2d36c41b7b9c@rivosinc.com
Changes in v4:
- Add newlines after riscv32 assembler directives
- Align instructions along 32-bit boundary (Emil)
- Link to v3: https://lore.kernel.org/r/20250128-runtime_const_riscv-v3-1-11922989e2d3@rivosinc.com
Changes in v3:
- Leverage "pack" instruction for runtime_const_ptr() to reduce hot path
by 3 instructions if Zbkb is supported. Suggested by Pasha Bouzarjomehri (pasha@rivosinc.com)
- Link to v2: https://lore.kernel.org/r/20250127-runtime_const_riscv-v2-1-95ae7cf97a39@rivosinc.com
Changes in v2:
- Treat instructions as __le32 and do proper conversions (Ben)
- Link to v1: https://lore.kernel.org/r/20250127-runtime_const_riscv-v1-1-795b023ea20b@rivosinc.com
---
arch/riscv/include/asm/runtime-const.h | 199 +++++++++++++++++++++++++++++++++
arch/riscv/kernel/vmlinux.lds.S | 3 +
2 files changed, 202 insertions(+)
diff --git a/arch/riscv/include/asm/runtime-const.h b/arch/riscv/include/asm/runtime-const.h
new file mode 100644
index 0000000000000000000000000000000000000000..bbfa8c512c602e49a34f4e1b1174c77c0478ca44
--- /dev/null
+++ b/arch/riscv/include/asm/runtime-const.h
@@ -0,0 +1,199 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _ASM_RISCV_RUNTIME_CONST_H
+#define _ASM_RISCV_RUNTIME_CONST_H
+
+#include <asm/alternative.h>
+#include <asm/cacheflush.h>
+#include <asm/text-patching.h>
+#include <linux/uaccess.h>
+
+#ifdef CONFIG_32BIT
+#define runtime_const_ptr(sym) \
+({ \
+ typeof(sym) __ret; \
+ asm_inline(".option push\n\t" \
+ ".option norvc\n\t" \
+ "1:\t" \
+ "lui %[__ret],0x89abd\n\t" \
+ "addi %[__ret],%[__ret],-0x211\n\t" \
+ ".option pop\n\t" \
+ ".pushsection runtime_ptr_" #sym ",\"a\"\n\t" \
+ ".long 1b - .\n\t" \
+ ".popsection" \
+ : [__ret] "=r" (__ret)); \
+ __ret; \
+})
+#else
+/*
+ * Loading 64-bit constants into a register from immediates is a non-trivial
+ * task on riscv64. To get it somewhat performant, load 32 bits into two
+ * different registers and then combine the results.
+ *
+ * If the processor supports the Zbkb extension, we can combine the final
+ * "slli,slli,srli,add" into the single "pack" instruction. If the processor
+ * doesn't support Zbkb but does support the Zbb extension, we can
+ * combine the final "slli,srli,add" into one instruction "add.uw".
+ */
+#define runtime_const_ptr(sym) \
+({ \
+ typeof(sym) __ret, __tmp; \
+ asm_inline(".option push\n\t" \
+ ".option norvc\n\t" \
+ "1:\t" \
+ "lui %[__ret],0x89abd\n\t" \
+ "lui %[__tmp],0x1234\n\t" \
+ "addiw %[__ret],%[__ret],-0x211\n\t" \
+ "addiw %[__tmp],%[__tmp],0x567\n\t" \
+ ALTERNATIVE_2( \
+ "slli %[__tmp],%[__tmp],32\n\t" \
+ "slli %[__ret],%[__ret],32\n\t" \
+ "srli %[__ret],%[__ret],32\n\t" \
+ "add %[__ret],%[__ret],%[__tmp]\n\t", \
+ ".option push\n\t" \
+ ".option arch,+zba\n\t" \
+ "slli %[__tmp],%[__tmp],32\n\t" \
+ "add.uw %[__ret],%[__ret],%[__tmp]\n\t" \
+ "nop\n\t" \
+ "nop\n\t" \
+ ".option pop\n\t", \
+ 0, RISCV_ISA_EXT_ZBA, 1, \
+ ".option push\n\t" \
+ ".option arch,+zbkb\n\t" \
+ "pack %[__ret],%[__ret],%[__tmp]\n\t" \
+ "nop\n\t" \
+ "nop\n\t" \
+ "nop\n\t" \
+ ".option pop\n\t", \
+ 0, RISCV_ISA_EXT_ZBKB, 1 \
+ ) \
+ ".option pop\n\t" \
+ ".pushsection runtime_ptr_" #sym ",\"a\"\n\t" \
+ ".long 1b - .\n\t" \
+ ".popsection" \
+ : [__ret] "=r" (__ret), [__tmp] "=r" (__tmp)); \
+ __ret; \
+})
+#endif
+
+#ifdef CONFIG_32BIT
+#define SRLI "srli "
+#else
+#define SRLI "srliw "
+#endif
+
+#define runtime_const_shift_right_32(val, sym) \
+({ \
+ u32 __ret; \
+ asm_inline(".option push\n\t" \
+ ".option norvc\n\t" \
+ "1:\t" \
+ SRLI "%[__ret],%[__val],12\n\t" \
+ ".option pop\n\t" \
+ ".pushsection runtime_shift_" #sym ",\"a\"\n\t" \
+ ".long 1b - .\n\t" \
+ ".popsection" \
+ : [__ret] "=r" (__ret) \
+ : [__val] "r" (val)); \
+ __ret; \
+})
+
+#define runtime_const_init(type, sym) do { \
+ extern s32 __start_runtime_##type##_##sym[]; \
+ extern s32 __stop_runtime_##type##_##sym[]; \
+ \
+ runtime_const_fixup(__runtime_fixup_##type, \
+ (unsigned long)(sym), \
+ __start_runtime_##type##_##sym, \
+ __stop_runtime_##type##_##sym); \
+} while (0)
+
+static inline void __runtime_fixup_caches(void *where, unsigned int insns)
+{
+ /* On riscv there are currently only cache-wide flushes so va is ignored. */
+ __always_unused uintptr_t va = (uintptr_t)where;
+
+ flush_icache_range(va, va + 4*insns);
+}
+
+/*
+ * The 32-bit immediate is stored in a lui+addi pairing.
+ * lui holds the upper 20 bits of the immediate in the first 20 bits of the instruction.
+ * addi holds the lower 12 bits of the immediate in the first 12 bits of the instruction.
+ */
+static inline void __runtime_fixup_32(__le16 *lui_parcel, __le16 *addi_parcel, unsigned int val)
+{
+ unsigned int lower_immediate, upper_immediate;
+ __le32 lui_res, addi_res;
+ u32 lui_insn, addi_insn;
+
+ lui_insn = (u32)le16_to_cpu(lui_parcel[0]) | (u32)le16_to_cpu(lui_parcel[1]) << 16;
+ addi_insn = (u32)le16_to_cpu(addi_parcel[0]) | (u32)le16_to_cpu(addi_parcel[1]) << 16;
+
+ lower_immediate = sign_extend32(val, 11);
+ upper_immediate = (val - lower_immediate);
+
+ if (upper_immediate & 0xfffff000) {
+ /* replace upper 20 bits of lui with upper immediate */
+ lui_insn &= 0x00000fff;
+ lui_insn |= upper_immediate & 0xfffff000;
+ } else {
+ /* replace lui with nop if immediate is small enough to fit in addi */
+ lui_insn = 0x00000013;
+ }
+
+ if (lower_immediate & 0x00000fff) {
+ /* replace upper 12 bits of addi with lower 12 bits of val */
+ addi_insn &= 0x000fffff;
+ addi_insn |= (lower_immediate & 0x00000fff) << 20;
+ } else {
+ /* replace addi with nop if lower_immediate is empty */
+ addi_insn = 0x00000013;
+ }
+
+ addi_res = cpu_to_le32(addi_insn);
+ lui_res = cpu_to_le32(lui_insn);
+ patch_insn_write(addi_parcel, &addi_res, sizeof(addi_res));
+ patch_insn_write(lui_parcel, &lui_res, sizeof(lui_res));
+}
+
+static inline void __runtime_fixup_ptr(void *where, unsigned long val)
+{
+#ifdef CONFIG_32BIT
+ __runtime_fixup_32(where, where + 4, val);
+ __runtime_fixup_caches(where, 2);
+#else
+ __runtime_fixup_32(where, where + 8, val);
+ __runtime_fixup_32(where + 4, where + 12, val >> 32);
+ __runtime_fixup_caches(where, 4);
+#endif
+}
+
+/*
+ * Replace the least significant 5 bits of the srli/srliw immediate that is
+ * located at bits 20-24
+ */
+static inline void __runtime_fixup_shift(void *where, unsigned long val)
+{
+ __le16 *parcel = where;
+ __le32 res;
+ u32 insn;
+
+ insn = (u32)le16_to_cpu(parcel[0]) | (u32)le16_to_cpu(parcel[1]) << 16;
+
+ insn &= 0xfe0fffff;
+ insn |= (val & 0b11111) << 20;
+
+ res = cpu_to_le32(insn);
+ patch_text_nosync(where, &res, sizeof(insn));
+}
+
+static inline void runtime_const_fixup(void (*fn)(void *, unsigned long),
+ unsigned long val, s32 *start, s32 *end)
+{
+ while (start < end) {
+ fn(*start + (void *)start, val);
+ start++;
+ }
+}
+
+#endif /* _ASM_RISCV_RUNTIME_CONST_H */
diff --git a/arch/riscv/kernel/vmlinux.lds.S b/arch/riscv/kernel/vmlinux.lds.S
index 002ca58dd998cb78b662837b5ebac988fb6c77bb..61bd5ba6680a786bf1db7dc37bf1acda0639b5c7 100644
--- a/arch/riscv/kernel/vmlinux.lds.S
+++ b/arch/riscv/kernel/vmlinux.lds.S
@@ -97,6 +97,9 @@ SECTIONS
{
EXIT_DATA
}
+
+ RUNTIME_CONST_VARIABLES
+
PERCPU_SECTION(L1_CACHE_BYTES)
.rel.dyn : {
---
base-commit: ffd294d346d185b70e28b1a28abe367bbfe53c04
change-id: 20250123-runtime_const_riscv-6cd854ee2817
--
- CharlieHi Charlie,
kernel test robot noticed the following build errors:
[auto build test ERROR on ffd294d346d185b70e28b1a28abe367bbfe53c04]
url: https://github.com/intel-lab-lkp/linux/commits/Charlie-Jenkins/riscv-Add-runtime-constant-support/20250204-044527
base: ffd294d346d185b70e28b1a28abe367bbfe53c04
patch link: https://lore.kernel.org/r/20250203-runtime_const_riscv-v5-1-bc61736a3229%40rivosinc.com
patch subject: [PATCH v5] riscv: Add runtime constant support
config: riscv-randconfig-r072-20250212 (https://download.01.org/0day-ci/archive/20250212/202502120355.WlAf0wvw-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250212/202502120355.WlAf0wvw-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202502120355.WlAf0wvw-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:52:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:32:10: note: instantiated into assembly here
.option arch,+zba
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zba' (Address Generation Instructions)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:54:32: note: expanded from macro 'runtime_const_ptr'
"slli %[__tmp],%[__tmp],32\n\t" \
^
<inline asm>:34:2: note: instantiated into assembly here
add.uw a1,a1,a3
^
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:60:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:59:10: note: instantiated into assembly here
.option arch,+zbkb
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zbp' (Permutation 'Zb' Instructions) or 'Zbkb' (Bitmanip instructions for Cryptography)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:61:25: note: expanded from macro 'runtime_const_ptr'
".option arch,+zbkb\n\t" \
^
<inline asm>:60:2: note: instantiated into assembly here
pack a1,a1,a3
^
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:52:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:32:10: note: instantiated into assembly here
.option arch,+zba
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zba' (Address Generation Instructions)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:54:32: note: expanded from macro 'runtime_const_ptr'
"slli %[__tmp],%[__tmp],32\n\t" \
^
<inline asm>:34:2: note: instantiated into assembly here
add.uw a3,a3,a4
^
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:60:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:59:10: note: instantiated into assembly here
.option arch,+zbkb
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zbp' (Permutation 'Zb' Instructions) or 'Zbkb' (Bitmanip instructions for Cryptography)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:61:25: note: expanded from macro 'runtime_const_ptr'
".option arch,+zbkb\n\t" \
^
<inline asm>:60:2: note: instantiated into assembly here
pack a3,a3,a4
^
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:52:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:32:10: note: instantiated into assembly here
.option arch,+zba
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zba' (Address Generation Instructions)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:54:32: note: expanded from macro 'runtime_const_ptr'
"slli %[__tmp],%[__tmp],32\n\t" \
^
<inline asm>:34:2: note: instantiated into assembly here
add.uw a0,a0,a1
^
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:60:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:59:10: note: instantiated into assembly here
.option arch,+zbkb
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zbp' (Permutation 'Zb' Instructions) or 'Zbkb' (Bitmanip instructions for Cryptography)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:61:25: note: expanded from macro 'runtime_const_ptr'
".option arch,+zbkb\n\t" \
^
<inline asm>:60:2: note: instantiated into assembly here
pack a0,a0,a1
^
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:52:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:32:10: note: instantiated into assembly here
.option arch,+zba
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zba' (Address Generation Instructions)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:54:32: note: expanded from macro 'runtime_const_ptr'
"slli %[__tmp],%[__tmp],32\n\t" \
^
<inline asm>:34:2: note: instantiated into assembly here
add.uw a1,a1,a2
^
>> fs/dcache.c:112:9: warning: unknown option, expected 'push', 'pop', 'rvc', 'norvc', 'relax' or 'norelax' [-Winline-asm]
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:60:19: note: expanded from macro 'runtime_const_ptr'
".option push\n\t" \
^
<inline asm>:59:10: note: instantiated into assembly here
.option arch,+zbkb
^
>> fs/dcache.c:112:9: error: instruction requires the following: 'Zbp' (Permutation 'Zb' Instructions) or 'Zbkb' (Bitmanip instructions for Cryptography)
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:61:25: note: expanded from macro 'runtime_const_ptr'
".option arch,+zbkb\n\t" \
^
<inline asm>:60:2: note: instantiated into assembly here
pack a1,a1,a2
^
>> fs/dcache.c:112:9: error: invalid .org offset '21034' (at offset '21038')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:98:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1) \
^
arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG'
ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:41:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21050' (at offset '21054')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:99:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
ALT_NEW_CONTENT(vendor_id_2, patch_id_2, enable_2, new_c_2)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:68:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21066' (at offset '21070')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:98:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1) \
^
arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG'
ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:41:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21082' (at offset '21086')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:99:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
ALT_NEW_CONTENT(vendor_id_2, patch_id_2, enable_2, new_c_2)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:68:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21098' (at offset '21102')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:98:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1) \
^
arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG'
ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:41:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21114' (at offset '21118')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:99:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
ALT_NEW_CONTENT(vendor_id_2, patch_id_2, enable_2, new_c_2)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:68:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21130' (at offset '21134')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:98:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1) \
^
arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG'
ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:41:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21146' (at offset '21150')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:99:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
ALT_NEW_CONTENT(vendor_id_2, patch_id_2, enable_2, new_c_2)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:68:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
>> fs/dcache.c:112:9: error: invalid .org offset '21034' (at offset '21038')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:98:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1) \
^
arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG'
ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:41:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21050' (at offset '21054')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:99:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
ALT_NEW_CONTENT(vendor_id_2, patch_id_2, enable_2, new_c_2)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:68:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fs/dcache.c:112:9: error: invalid .org offset '21066' (at offset '21070')
return runtime_const_ptr(dentry_hashtable) +
^
arch/riscv/include/asm/runtime-const.h:47:3: note: expanded from macro 'runtime_const_ptr'
ALTERNATIVE_2( \
^
arch/riscv/include/asm/alternative-macros.h:163:2: note: expanded from macro 'ALTERNATIVE_2'
_ALTERNATIVE_CFG_2(old_content, new_content_1, vendor_id_1, patch_id_1, CONFIG_k_1, \
^
arch/riscv/include/asm/alternative-macros.h:108:2: note: expanded from macro '_ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG_2(old_c, new_c_1, vendor_id_1, patch_id_1, IS_ENABLED(CONFIG_k_1), \
^
arch/riscv/include/asm/alternative-macros.h:98:2: note: expanded from macro '__ALTERNATIVE_CFG_2'
__ALTERNATIVE_CFG(old_c, new_c_1, vendor_id_1, patch_id_1, enable_1) \
^
arch/riscv/include/asm/alternative-macros.h:94:2: note: expanded from macro '__ALTERNATIVE_CFG'
ALT_NEW_CONTENT(vendor_id, patch_id, enable, new_c)
^
arch/riscv/include/asm/alternative-macros.h:81:3: note: expanded from macro 'ALT_NEW_CONTENT'
".org . - (887b - 886b) + (889b - 888b)\n" \
^
<inline asm>:41:6: note: instantiated into assembly here
.org . - (887b - 886b) + (889b - 888b)
^
fatal error: too many errors emitted, stopping now [-ferror-limit=]
8 warnings and 20 errors generated.
vim +/Zba +112 fs/dcache.c
ceb5bdc2d246f6 Nicholas Piggin 2011-01-07 109
e60cc61153e61e Linus Torvalds 2024-06-10 110 static inline struct hlist_bl_head *d_hash(unsigned long hashlen)
ceb5bdc2d246f6 Nicholas Piggin 2011-01-07 111 {
e78298556ee5d8 Linus Torvalds 2024-06-04 @112 return runtime_const_ptr(dentry_hashtable) +
e78298556ee5d8 Linus Torvalds 2024-06-04 113 runtime_const_shift_right_32(hashlen, d_hash_shift);
ceb5bdc2d246f6 Nicholas Piggin 2011-01-07 114 }
ceb5bdc2d246f6 Nicholas Piggin 2011-01-07 115
--
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