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authorLinus Torvalds <torvalds@linux-foundation.org>2020-09-12 13:03:49 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-09-12 13:03:49 -0700
commitb952e974300be3184049a125e7cba112fe659017 (patch)
tree0f2533cba641583ffbf0fea0a585c14555d8e682
parentef2e9a563b0cd7965e2a1263125dcbb1c86aa6cc (diff)
parentd877322bc1adcab9850732275670409e8bcca4c4 (diff)
downloadlinux-sh-b952e974300be3184049a125e7cba112fe659017.tar.gz
Merge tag 'for-linus' of git://github.com/openrisc/linux
Pull OpenRISC fixes from Stafford Horne: "Fixes for compile issues pointed out by kbuild and one bug I found in initrd with the 5.9 patches" * tag 'for-linus' of git://github.com/openrisc/linux: openrisc: Fix issue with get_user for 64-bit values openrisc: Fix cache API compile issue when not inlining openrisc: Reserve memblock for initrd
-rw-r--r--arch/openrisc/include/asm/uaccess.h33
-rw-r--r--arch/openrisc/kernel/setup.c10
-rw-r--r--arch/openrisc/mm/cache.c2
3 files changed, 32 insertions, 13 deletions
diff --git a/arch/openrisc/include/asm/uaccess.h b/arch/openrisc/include/asm/uaccess.h
index f0390211236b..120f5005461b 100644
--- a/arch/openrisc/include/asm/uaccess.h
+++ b/arch/openrisc/include/asm/uaccess.h
@@ -165,19 +165,19 @@ struct __large_struct {
#define __get_user_nocheck(x, ptr, size) \
({ \
- long __gu_err, __gu_val; \
- __get_user_size(__gu_val, (ptr), (size), __gu_err); \
- (x) = (__force __typeof__(*(ptr)))__gu_val; \
+ long __gu_err; \
+ __get_user_size((x), (ptr), (size), __gu_err); \
__gu_err; \
})
#define __get_user_check(x, ptr, size) \
({ \
- long __gu_err = -EFAULT, __gu_val = 0; \
+ long __gu_err = -EFAULT; \
const __typeof__(*(ptr)) __user *__gu_addr = (ptr); \
- if (access_ok(__gu_addr, size)) \
- __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
- (x) = (__force __typeof__(*(ptr)))__gu_val; \
+ if (access_ok(__gu_addr, size)) \
+ __get_user_size((x), __gu_addr, (size), __gu_err); \
+ else \
+ (x) = (__typeof__(*(ptr))) 0; \
__gu_err; \
})
@@ -191,11 +191,13 @@ do { \
case 2: __get_user_asm(x, ptr, retval, "l.lhz"); break; \
case 4: __get_user_asm(x, ptr, retval, "l.lwz"); break; \
case 8: __get_user_asm2(x, ptr, retval); break; \
- default: (x) = __get_user_bad(); \
+ default: (x) = (__typeof__(*(ptr)))__get_user_bad(); \
} \
} while (0)
#define __get_user_asm(x, addr, err, op) \
+{ \
+ unsigned long __gu_tmp; \
__asm__ __volatile__( \
"1: "op" %1,0(%2)\n" \
"2:\n" \
@@ -209,10 +211,14 @@ do { \
" .align 2\n" \
" .long 1b,3b\n" \
".previous" \
- : "=r"(err), "=r"(x) \
- : "r"(addr), "i"(-EFAULT), "0"(err))
+ : "=r"(err), "=r"(__gu_tmp) \
+ : "r"(addr), "i"(-EFAULT), "0"(err)); \
+ (x) = (__typeof__(*(addr)))__gu_tmp; \
+}
#define __get_user_asm2(x, addr, err) \
+{ \
+ unsigned long long __gu_tmp; \
__asm__ __volatile__( \
"1: l.lwz %1,0(%2)\n" \
"2: l.lwz %H1,4(%2)\n" \
@@ -229,8 +235,11 @@ do { \
" .long 1b,4b\n" \
" .long 2b,4b\n" \
".previous" \
- : "=r"(err), "=&r"(x) \
- : "r"(addr), "i"(-EFAULT), "0"(err))
+ : "=r"(err), "=&r"(__gu_tmp) \
+ : "r"(addr), "i"(-EFAULT), "0"(err)); \
+ (x) = (__typeof__(*(addr)))( \
+ (__typeof__((x)-(x)))__gu_tmp); \
+}
/* more complex routines */
diff --git a/arch/openrisc/kernel/setup.c b/arch/openrisc/kernel/setup.c
index b18e775f8be3..13c87f1f872b 100644
--- a/arch/openrisc/kernel/setup.c
+++ b/arch/openrisc/kernel/setup.c
@@ -80,6 +80,16 @@ static void __init setup_memory(void)
*/
memblock_reserve(__pa(_stext), _end - _stext);
+#ifdef CONFIG_BLK_DEV_INITRD
+ /* Then reserve the initrd, if any */
+ if (initrd_start && (initrd_end > initrd_start)) {
+ unsigned long aligned_start = ALIGN_DOWN(initrd_start, PAGE_SIZE);
+ unsigned long aligned_end = ALIGN(initrd_end, PAGE_SIZE);
+
+ memblock_reserve(__pa(aligned_start), aligned_end - aligned_start);
+ }
+#endif /* CONFIG_BLK_DEV_INITRD */
+
early_init_fdt_reserve_self();
early_init_fdt_scan_reserved_mem();
diff --git a/arch/openrisc/mm/cache.c b/arch/openrisc/mm/cache.c
index 08f56af387ac..534a52ec5e66 100644
--- a/arch/openrisc/mm/cache.c
+++ b/arch/openrisc/mm/cache.c
@@ -16,7 +16,7 @@
#include <asm/cacheflush.h>
#include <asm/tlbflush.h>
-static void cache_loop(struct page *page, const unsigned int reg)
+static __always_inline void cache_loop(struct page *page, const unsigned int reg)
{
unsigned long paddr = page_to_pfn(page) << PAGE_SHIFT;
unsigned long line = paddr & ~(L1_CACHE_BYTES - 1);