From: Kefeng Wang <wangkefeng.wang@huawei.com> To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Andrey Ryabinin <ryabinin.a.a@gmail.com>, Andrey Konovalov <andreyknvl@gmail.com>, Dmitry Vyukov <dvyukov@google.com> Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <kasan-dev@googlegroups.com>, <linux-mm@kvack.org>, Kefeng Wang <wangkefeng.wang@huawei.com> Subject: [PATCH -next 0/3] arm64: support page mapping percpu first chunk allocator Date: Mon, 5 Jul 2021 19:14:50 +0800 [thread overview] Message-ID: <20210705111453.164230-1-wangkefeng.wang@huawei.com> (raw) Percpu embedded first chunk allocator is the firstly option, but it could fails on ARM64, eg, "percpu: max_distance=0x5fcfdc640000 too large for vmalloc space 0x781fefff0000" "percpu: max_distance=0x600000540000 too large for vmalloc space 0x7dffb7ff0000" "percpu: max_distance=0x5fff9adb0000 too large for vmalloc space 0x5dffb7ff0000" then we could meet "WARNING: CPU: 15 PID: 461 at vmalloc.c:3087 pcpu_get_vm_areas+0x488/0x838", the system can't boot successfully. Let's implement page mapping percpu first chunk allocator as a fallback to the embedding allocator to increase the robustness of the system. Also fix a crash when both NEED_PER_CPU_PAGE_FIRST_CHUNK and KASAN_VMALLOC enabled. Tested on ARM64 qemu with cmdline "percpu_alloc=page" based on next-20210630. Kefeng Wang (3): vmalloc: Choose a better start address in vm_area_register_early() arm64: Support page mapping percpu first chunk allocator kasan: arm64: Fix pcpu_page_first_chunk crash with KASAN_VMALLOC arch/arm64/Kconfig | 4 ++ arch/arm64/mm/kasan_init.c | 18 +++++++++ drivers/base/arch_numa.c | 82 +++++++++++++++++++++++++++++++++----- include/linux/kasan.h | 2 + mm/kasan/init.c | 5 +++ mm/vmalloc.c | 9 +++-- 6 files changed, 107 insertions(+), 13 deletions(-) -- 2.26.2
WARNING: multiple messages have this Message-ID (diff)
From: Kefeng Wang <wangkefeng.wang@huawei.com> To: Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Andrey Ryabinin <ryabinin.a.a@gmail.com>, Andrey Konovalov <andreyknvl@gmail.com>, Dmitry Vyukov <dvyukov@google.com> Cc: <linux-arm-kernel@lists.infradead.org>, <linux-kernel@vger.kernel.org>, <kasan-dev@googlegroups.com>, <linux-mm@kvack.org>, Kefeng Wang <wangkefeng.wang@huawei.com> Subject: [PATCH -next 0/3] arm64: support page mapping percpu first chunk allocator Date: Mon, 5 Jul 2021 19:14:50 +0800 [thread overview] Message-ID: <20210705111453.164230-1-wangkefeng.wang@huawei.com> (raw) Percpu embedded first chunk allocator is the firstly option, but it could fails on ARM64, eg, "percpu: max_distance=0x5fcfdc640000 too large for vmalloc space 0x781fefff0000" "percpu: max_distance=0x600000540000 too large for vmalloc space 0x7dffb7ff0000" "percpu: max_distance=0x5fff9adb0000 too large for vmalloc space 0x5dffb7ff0000" then we could meet "WARNING: CPU: 15 PID: 461 at vmalloc.c:3087 pcpu_get_vm_areas+0x488/0x838", the system can't boot successfully. Let's implement page mapping percpu first chunk allocator as a fallback to the embedding allocator to increase the robustness of the system. Also fix a crash when both NEED_PER_CPU_PAGE_FIRST_CHUNK and KASAN_VMALLOC enabled. Tested on ARM64 qemu with cmdline "percpu_alloc=page" based on next-20210630. Kefeng Wang (3): vmalloc: Choose a better start address in vm_area_register_early() arm64: Support page mapping percpu first chunk allocator kasan: arm64: Fix pcpu_page_first_chunk crash with KASAN_VMALLOC arch/arm64/Kconfig | 4 ++ arch/arm64/mm/kasan_init.c | 18 +++++++++ drivers/base/arch_numa.c | 82 +++++++++++++++++++++++++++++++++----- include/linux/kasan.h | 2 + mm/kasan/init.c | 5 +++ mm/vmalloc.c | 9 +++-- 6 files changed, 107 insertions(+), 13 deletions(-) -- 2.26.2 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next reply other threads:[~2021-07-05 11:07 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-07-05 11:14 Kefeng Wang [this message] 2021-07-05 11:14 ` [PATCH -next 0/3] arm64: support page mapping percpu first chunk allocator Kefeng Wang 2021-07-05 11:14 ` [PATCH -next 1/3] vmalloc: Choose a better start address in vm_area_register_early() Kefeng Wang 2021-07-05 11:14 ` Kefeng Wang 2021-07-05 11:14 ` [PATCH -next 2/3] arm64: Support page mapping percpu first chunk allocator Kefeng Wang 2021-07-05 11:14 ` Kefeng Wang 2021-07-05 11:14 ` [PATCH -next 3/3] kasan: arm64: Fix pcpu_page_first_chunk crash with KASAN_VMALLOC Kefeng Wang 2021-07-05 11:14 ` Kefeng Wang 2021-07-05 14:10 ` kernel test robot 2021-07-05 14:10 ` kernel test robot 2021-07-05 14:10 ` kernel test robot 2021-07-06 4:12 ` Kefeng Wang 2021-07-06 4:12 ` Kefeng Wang 2021-07-06 4:12 ` Kefeng Wang 2021-07-05 15:04 ` Marco Elver 2021-07-05 15:04 ` Marco Elver 2021-07-06 0:04 ` Daniel Axtens 2021-07-06 0:04 ` Daniel Axtens 2021-07-06 0:05 ` Daniel Axtens 2021-07-06 0:05 ` Daniel Axtens 2021-07-06 4:07 ` Kefeng Wang 2021-07-16 5:06 ` Kefeng Wang 2021-07-16 7:41 ` Marco Elver 2021-07-16 7:41 ` Marco Elver 2021-07-16 7:41 ` Marco Elver 2021-07-17 2:40 ` Kefeng Wang 2021-07-17 2:40 ` Kefeng Wang 2021-07-05 17:15 ` kernel test robot 2021-07-05 17:15 ` kernel test robot 2021-07-05 17:15 ` kernel test robot
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