Reviewed-by: Xiangyou Xie<xiexiangyou@huawei.com> On 2022/3/22 17:37, Zhenyu Ye wrote:

From: eillon <yezhenyu2@huawei.com>

euleros inclusion category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I4YW86

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When building with defconfig on arm32, we got a compile error: ./include/linux/page-flags-layout.h:95:2: error: #error "Not enough bits in page flags" 95 | #error "Not enough bits in page flags" | ^~~~~

Limit PG_reserve_pgflag_0 and PG_reserve_pgflag_1 to compile only on X86_64 and ARM64 to resolve this issue.

Fixes: afdf2a6cdee7 ("kabi: Add reserved page and gfp flags for future extension") Signed-off-by: eillon <yezhenyu2@huawei.com> --- include/linux/page-flags.h | 2 ++ include/trace/events/mmflags.h | 10 +++++++--- 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index e1af0a6c8165..65e1cbe1d1ce 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -150,8 +150,10 @@ enum pageflags { * flags which backported from kernel upstream, please place them * behind the reserved page flags. */ +#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) PG_reserve_pgflag_0, PG_reserve_pgflag_1, +#endif

__NR_PAGEFLAGS,

diff --git a/include/trace/events/mmflags.h b/include/trace/events/mmflags.h index b50012bea1ef..366d972ce735 100644 --- a/include/trace/events/mmflags.h +++ b/include/trace/events/mmflags.h @@ -89,8 +89,12 @@

#if defined(CONFIG_X86_64) || defined(CONFIG_ARM64) #define IF_HAVE_PG_POOL(flag,string) ,{1UL << flag, string} +#define IF_HAVE_PG_RESERVE0(flag,string) ,{1UL << flag, string} +#define IF_HAVE_PG_RESERVE1(flag,string) ,{1UL << flag, string} #else #define IF_HAVE_PG_POOL(flag,string) +#define IF_HAVE_PG_RESERVE0(flag,string) +#define IF_HAVE_PG_RESERVE1(flag,string) #endif

#ifdef CONFIG_PIN_MEMORY @@ -128,9 +132,9 @@ IF_HAVE_PG_IDLE(PG_young, "young" ) \ IF_HAVE_PG_IDLE(PG_idle, "idle" ) \ IF_HAVE_PG_ARCH_2(PG_arch_2, "arch_2" ) \ IF_HAVE_PG_POOL(PG_pool, "pool" ) \ -IF_HAVE_PG_HOTREPLACE(PG_hotreplace, "hotreplace" ), \ - {1UL << PG_reserve_pgflag_0, "reserve_pgflag_0"}, \ - {1UL << PG_reserve_pgflag_1, "reserve_pgflag_1"} +IF_HAVE_PG_HOTREPLACE(PG_hotreplace, "hotreplace" ) \ +IF_HAVE_PG_RESERVE0(PG_reserve_pgflag_0,"reserve_pgflag_0") \ +IF_HAVE_PG_RESERVE1(PG_reserve_pgflag_1,"reserve_pgflag_1")

#define show_page_flags(flags) \ (flags) ? __print_flags(flags, "|", \