Hi guanyou,
On Tue, Aug 27, 2024 at 3:24 PM 陈冠有 <chenguanyou@xxxxxxxxxx> wrote:
>
> 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.
>
Thanks for your efforts for maintaining a Andorid fork, which will be
a great help!
> Author: chenguanyou <chenguanyou@xxxxxxxxxx>
> Date: Mon Aug 26 14:25:22 2024 +0800
>
> Revert "arm64: section_size_bits compatible with macro definitions"
>
> This reverts commit 568c6f049ad4a20918afeb2db9bb7a15b17d9ff2.
>
Could you please also draft the revert patches and send out
independently, with proper commit logs, so we know why the patch
should be reverted.
> 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;
> + }
E.g. is "CONFIG_ARM64_4K_PAGES", "CONFIG_ARM64_64K_PAGES" android
specific? Why should we remove those?
Thanks,
Tao Liu
> }
>
> if (CRASHDEBUG(1))
>
>
> ________________________________
> 发件人: Tao Liu <ltao@xxxxxxxxxx>
> 发送时间: 2024年8月26日 13:32:54
> 收件人: lijiang
> 抄送: devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> 主题: [External Mail] 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@xxxxxxxxxx进行反馈
>
> Hi Lijiang & guanyou & qiwu,
>
> On Mon, Aug 26, 2024 at 3:08 PM lijiang <lijiang@xxxxxxxxxx> wrote:
> >
> > On Tue, Aug 20, 2024 at 11:54 AM <devel-request@xxxxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
> >>
> >> Date: Tue, 20 Aug 2024 03:53:16 -0000
> >> From: chenguanyou9338@xxxxxxxxx
> >> Subject: Re: [PATCH v2] arm64: fix regression for the
> >> determination of section_size_bits
> >> To: devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> >> Message-ID: <20240820035316.8055.4425@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> >> 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@xxxxxxxxxx>
> >> 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@xxxxxxxxxxxxx>
> >> Signed-off-by: chenguanyou <chenguanyou@xxxxxxxxxx>
> >> ---
> >> 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@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> > To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> > https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/
> > Contribution Guidelines: https://github.com/crash-utility/crash/wiki
> --
> Crash-utility mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxxxxxx
> https://${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. Any use of the information contained herein in any way (including, but not limited to, total or partial disclosure, reproduction, or dissemination) by persons other than the intended recipient(s) is prohibited. If you receive this e-mail in error, please notify the sender by phone or email immediately and delete it!******/#
--
Crash-utility mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx
To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxxxxxx
https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/
Contribution Guidelines: https://github.com/crash-utility/crash/wiki
