[Crash-utility] Re: [External Mail]Re: [PATCH v2] arm64: fix regression for the determination of section_size_bits

Hi Lianbo , Tao I plan to create an android version repository on my github. This commit will cause parsing section_size_bits on Linux 5.12 before.

Author: chenguanyou <chenguanyou(a)xiaomi.com&gt; Date: Mon Aug 26 14:25:22 2024 +0800 Revert "arm64: section_size_bits compatible with macro definitions" This reverts commit 568c6f049ad4a20918afeb2db9bb7a15b17d9ff2.

diff --git a/arm64.c b/arm64.c index 06e7451..05ffdb3 100644 --- a/arm64.c +++ b/arm64.c @@ -1698,14 +1698,7 @@ arm64_get_section_size_bits(void) if ((ret = get_kernel_config("CONFIG_MEMORY_HOTPLUG", NULL)) == IKCONFIG_Y) { if ((ret = get_kernel_config("CONFIG_HOTPLUG_SIZE_BITS", &string)) == IKCONFIG_STR) machdep->section_size_bits = atol(string); - } - - /* arm64: reduce section size for sparsemem */ - if ((ret = get_kernel_config("CONFIG_ARM64_4K_PAGES", NULL)) == IKCONFIG_Y - || (ret = get_kernel_config("CONFIG_ARM64_16K_PAGES", NULL)) == IKCONFIG_Y) - machdep->section_size_bits = _SECTION_SIZE_BITS_5_12; - else if ((ret = get_kernel_config("CONFIG_ARM64_64K_PAGES", NULL)) == IKCONFIG_Y) - machdep->section_size_bits = _SECTION_SIZE_BITS_5_12_64K; + }

} if (CRASHDEBUG(1)) ________________________________ 发件人: Tao Liu <ltao(a)redhat.com&gt; 发送时间: 2024年8月26日 13:32:54 收件人: lijiang 抄送: devel(a)lists.crash-utility.osci.io 主题: [External Mail][Crash-utility] Re: [PATCH v2] arm64: fix regression for the determination of section_size_bits [外部邮件] 此邮件来源于小米公司外部，请谨慎处理。若对邮件安全性存疑，请将邮件转发给misec(a)xiaomi.xn--com-iw3ew31vyqjqpq Hi Lijiang & guanyou & qiwu, On Mon, Aug 26, 2024 at 3:08 PM lijiang <lijiang(a)redhat.com&gt; wrote: > > On Tue, Aug 20, 2024 at 11:54 AM <devel-request(a)lists.crash-utility.osci.io&gt; wrote: >> >> Date: Tue, 20 Aug 2024 03:53:16 -0000 >> From: chenguanyou9338(a)gmail.com >> Subject: [Crash-utility] Re: [PATCH v2] arm64: fix regression for the >> determination of section_size_bits >> To: devel(a)lists.crash-utility.osci.io >> Message-ID: <20240820035316.8055.4425(a)lists.crash-utility.osci.io&gt; >> Content-Type: text/plain; charset="utf-8" >> >> Hi lianbo >> >> Base on qiwu's patch, is this attached patch OK ? >> > > Sorry for the late reply. > > I'm worried that there will be more and more similar patches in the future, how should we handle them by then? > > Or leave it there for the time being until we find a better solution. Any thoughts from other reviewers? > Agreed. The patch is Android specific, which can only serve for android, not for other distros. Please correct me if I'm wrong. The android can be viewed as a distro, similar to ubuntu/fedora etc. The distro specific change/code should better go into distro packaging, like the one[1] for fedora, which may have extra compiling hardening or other customizations required by distro itself, hence these patches are maintained here other than upstream. I'm not a android guy and not familiar with how the andorid commandline tools are maintained. AFAIK there are 3rd package systems for android, such as termux [2]. IMHO the above change should go in there instead. Any thoughts? Thanks, Tao Liu [1]: https://src.fedoraproject.org/rpms/crash/tree/rawhide [2]: https://github.com/termux/termux-packages > Thanks > Lianbo > >> >From 08d4af144b981daf292473303e08546ef1e81a04 Mon Sep 17 00:00:00 2001 >> From: chenguanyou <chenguanyou(a)xiaomi.com&gt; >> Date: Thu, 8 Aug 2024 17:35:07 +0800 >> Subject: [PATCH] arm64: fix regression for the determination of >> section_size_bits >> >> The commit 568c6f04 will cause a regression issue for the determination of >> section_size_bits on kernel version before android12-5.10 or Linux-v5.12. >> The section_size_bits is supposed to be compatible with linux upstream and >> android GKI version: >> Before android12-5.10 or Linux-v5.12: >> SECTION_SIZE_BITS = 30 >> >> After android12-5.10 or Linux-v5.12: >> SECTION_SIZE_BITS = 27 when defined 4K_PAGES or 16K_PAGES. >> SECTION_SIZE_BITS = 29 when defined 64K_PAGES. >> >> Fixes: 568c6f04 ("arm64: section_size_bits compatible with macro definitions") >> Change-Id: Ib6ec610753aabb52dfbafab65e1e6c04cbe65f72 >> >> Signed-off-by: qiwu.chen <qiwu.chen(a)transsion.com&gt; >> Signed-off-by: chenguanyou <chenguanyou(a)xiaomi.com&gt; >> --- >> arm64.c | 22 ++++++++++------------ >> defs.h | 10 ++++++++++ >> global_data.c | 7 +++++++ >> kernel.c | 23 +++++++++++++++++++++++ >> 4 files changed, 50 insertions(+), 12 deletions(-) >> >> diff --git a/arm64.c b/arm64.c >> index 8ed1aaf..f0721b7 100644 >> --- a/arm64.c >> +++ b/arm64.c >> @@ -1667,30 +1667,28 @@ arm64_get_section_size_bits(void) >> int ret; >> char *string; >> >> - if (THIS_KERNEL_VERSION >= LINUX(5,12,0)) { >> + if (arm64_get_vmcoreinfo(&machdep->section_size_bits, "NUMBER(SECTION_SIZE_BITS)", NUM_DEC)) >> + goto exit; >> + >> + if (THIS_KERNEL_VERSION >= LINUX(5,12,0) >> + || (IS_ANDROID_KERNEL_REL >> + && THIS_KERNEL_VERSION >= LINUX(5,10,0) >> + && THIS_ANDROID_VERSION >= ANDROID(12,0))) >> if (machdep->pagesize == 65536) >> machdep->section_size_bits = _SECTION_SIZE_BITS_5_12_64K; >> else >> machdep->section_size_bits = _SECTION_SIZE_BITS_5_12; >> - } else >> + else >> machdep->section_size_bits = _SECTION_SIZE_BITS; >> >> - if (arm64_get_vmcoreinfo(&machdep->section_size_bits, "NUMBER(SECTION_SIZE_BITS)", NUM_DEC)) { >> - /* nothing */ >> - } else if (kt->ikconfig_flags & IKCONFIG_AVAIL) { >> + if (kt->ikconfig_flags & IKCONFIG_AVAIL) { >> if ((ret = get_kernel_config("CONFIG_MEMORY_HOTPLUG", NULL)) == IKCONFIG_Y) { >> if ((ret = get_kernel_config("CONFIG_HOTPLUG_SIZE_BITS", &string)) == IKCONFIG_STR) >> machdep->section_size_bits = atol(string); >> } >> - >> - /* arm64: reduce section size for sparsemem */ >> - if ((ret = get_kernel_config("CONFIG_ARM64_4K_PAGES", NULL)) == IKCONFIG_Y >> - || (ret = get_kernel_config("CONFIG_ARM64_16K_PAGES", NULL)) == IKCONFIG_Y) >> - machdep->section_size_bits = _SECTION_SIZE_BITS_5_12; >> - else if ((ret = get_kernel_config("CONFIG_ARM64_64K_PAGES", NULL)) == IKCONFIG_Y) >> - machdep->section_size_bits = _SECTION_SIZE_BITS_5_12_64K; >> } >> >> +exit: >> if (CRASHDEBUG(1)) >> fprintf(fp, "SECTION_SIZE_BITS: %ld\n", machdep->section_size_bits); >> } >> diff --git a/defs.h b/defs.h >> index 1b7649d..b0d3f8f 100644 >> --- a/defs.h >> +++ b/defs.h >> @@ -829,6 +829,15 @@ struct kernel_table { /* kernel data */ >> #define IS_KERNEL_STATIC_TEXT(x) (((ulong)(x) >= kt->stext) && \ >> ((ulong)(x) < kt->etext)) >> >> +#define THIS_KERNEL_RELEASE (kt->utsname.release) >> + >> +struct android_table { >> + uint android_version[2]; >> +}; >> +#define IS_ANDROID_KERNEL_REL (at->android_version[0] > 0) >> +#define THIS_ANDROID_VERSION ((at->android_version[0] << 16) + (at->android_version[1])) >> +#define ANDROID(x,y) (((uint)(x) << 16) + (uint)(y)) >> + >> #define TASK_COMM_LEN 16 /* task command name length including NULL */ >> >> struct task_context { /* context stored for each task */ >> @@ -5353,6 +5362,7 @@ extern struct vm_table vm_table, *vt; >> extern struct machdep_table *machdep; >> extern struct symbol_table_data symbol_table_data, *st; >> extern struct extension_table *extension_table; >> +extern struct android_table android_table, *at; >> >> /* >> * Generated in build_data.c >> diff --git a/global_data.c b/global_data.c >> index f9bb7d0..dddde96 100644 >> --- a/global_data.c >> +++ b/global_data.c >> @@ -55,6 +55,13 @@ struct symbol_table_data *st = &symbol_table_data; >> struct machdep_table machdep_table = { 0 }; >> struct machdep_table *machdep = &machdep_table; >> >> +/* >> + * The same thing goes for accesses to the frequently-accessed android_table, >> + * making the "at" pointers globally available. >> + */ >> +struct android_table android_table = { 0, 0 }; >> +struct android_table *at = &android_table; >> + >> /* >> * Command functions are entered with the args[] array and argcnt value >> * pre-set for issuance to getopt(). >> diff --git a/kernel.c b/kernel.c >> index adb19ad..814418c 100644 >> --- a/kernel.c >> +++ b/kernel.c >> @@ -104,6 +104,26 @@ static void check_vmcoreinfo(void); >> static int is_pvops_xen(void); >> static int get_linux_banner_from_vmlinux(char *, size_t); >> >> +/* >> + * Determine Andriod GKI vmcore by reading "android" from ut->release. >> + * The prefix of Andriod GKI release version is: >> + * Kernel Version - Android release version >> + * For example: >> + * 5.10.209-android12, 5.10.209-android12.1, 5.15.148-android13 >> + */ >> +void >> +parse_android_table(void) >> +{ >> + char *p; >> + if ((p = strstr(THIS_KERNEL_RELEASE, "android"))) { >> + sscanf(p, "android%d.%d", &at->android_version[0], &at->android_version[1]); >> + >> + if (CRASHDEBUG(1)) >> + fprintf(fp, "andriod_version: andriod-%d.%d\n", >> + at->android_version[0], at->android_version[1]); >> + } >> +} >> + >> /* >> * popuplate the global kernel table (kt) with kernel version >> * information parsed from UTSNAME/OSRELEASE string >> @@ -298,6 +318,9 @@ kernel_init() >> kt->utsname.domainname : "(not printable)"); >> } >> >> + // non-upstream rel >> + parse_android_table(); >> + >> strncpy(buf, kt->utsname.release, 65); >> if (buf[64]) >> buf[64] = NULLCHAR; >> -- >> 2.39.0 > > -- > Crash-utility mailing list -- devel(a)lists.crash-utility.osci.io > To unsubscribe send an email to devel-leave(a)lists.crash-utility.osci.io > https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/ > Contribution Guidelines: https://github.com/crash-utility/crash/wiki -- Crash-utility mailing list -- devel(a)lists.crash-utility.osci.io To unsubscribe send an email to devel-leave(a)lists.crash-utility.osci.io https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/ Contribution Guidelines: https://github.com/crash-utility/crash/wiki #/******本邮件及其附件含有小米公司的保密信息，仅限于发送给上面地址中列出的个人或群组。禁止任何其他人以任何形式使用（包括但不限于全部或部分地泄露、复制、或散发）本邮件中的信息。如果您错收了本邮件，请您立即电话或邮件通知发件人并删除本邮件！ This e-mail and its attachments contain confidential information from XIAOMI, which is intended only for the person or entity whose address is listed above. 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