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| author | Arnd Bergmann <arnd@arndb.de> | 2019-10-27 17:26:55 +0100 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2019-11-15 14:38:28 +0100 |
| commit | 176ed98c8a76ee08babf99b25b00992c2a5e7bbc (patch) | |
| tree | 8769c4b148a8a47539be9f210e0e5aa863872410 /arch/powerpc/kernel/vdso32 | |
| parent | y2038: vdso: nds32: open-code timespec_add_ns() (diff) | |
| download | linux-176ed98c8a76ee08babf99b25b00992c2a5e7bbc.tar.xz linux-176ed98c8a76ee08babf99b25b00992c2a5e7bbc.zip | |
y2038: vdso: powerpc: avoid timespec references
As a preparation to stop using 'struct timespec' in the kernel,
change the powerpc vdso implementation:
- split up the vdso data definition to have equivalent members
for seconds and nanoseconds instead of an xtime structure
- use timespec64 as an intermediate for the xtime update
- change the asm-offsets definition to be based the appropriate
fixed-length types
This is only a temporary fix for changing the types, in order
to actually support a 64-bit safe vdso32 version of clock_gettime(),
the entire powerpc vdso should be replaced with the generic
lib/vdso/ implementation. If that happens first, this patch
becomes obsolete.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'arch/powerpc/kernel/vdso32')
| -rw-r--r-- | arch/powerpc/kernel/vdso32/gettimeofday.S | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/powerpc/kernel/vdso32/gettimeofday.S b/arch/powerpc/kernel/vdso32/gettimeofday.S index becd9f8767ed..a7180b0f4aa1 100644 --- a/arch/powerpc/kernel/vdso32/gettimeofday.S +++ b/arch/powerpc/kernel/vdso32/gettimeofday.S @@ -15,10 +15,8 @@ /* Offset for the low 32-bit part of a field of long type */ #ifdef CONFIG_PPC64 #define LOPART 4 -#define TSPEC_TV_SEC TSPC64_TV_SEC+LOPART #else #define LOPART 0 -#define TSPEC_TV_SEC TSPC32_TV_SEC #endif .text @@ -192,7 +190,7 @@ V_FUNCTION_BEGIN(__kernel_time) bl __get_datapage@local mr r9, r3 /* datapage ptr in r9 */ - lwz r3,STAMP_XTIME+TSPEC_TV_SEC(r9) + lwz r3,STAMP_XTIME_SEC+LOWPART(r9) cmplwi r11,0 /* check if t is NULL */ beq 2f @@ -268,7 +266,7 @@ __do_get_tspec: * as a 32.32 fixed-point number in r3 and r4. * Load & add the xtime stamp. */ - lwz r5,STAMP_XTIME+TSPEC_TV_SEC(r9) + lwz r5,STAMP_XTIME_SEC+LOWPART(r9) lwz r6,STAMP_SEC_FRAC(r9) addc r4,r4,r6 adde r3,r3,r5 |