From: Chao Fan <fanc.fnst@cn.fujitsu.com> To: "bhe@redhat.com" <bhe@redhat.com> Cc: Junichi Nomura <j-nomura@ce.jp.nec.com>, Borislav Petkov <bp@alien8.de>, Dave Young <dyoung@redhat.com>, "kasong@redhat.com" <kasong@redhat.com>, "x86@kernel.org" <x86@kernel.org>, "kexec@lists.infradead.org" <kexec@lists.infradead.org>, "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org> Subject: Re: [PATCH] x86/boot: Use efi_setup_data for searching RSDP on kexec-ed kernel Date: Fri, 29 Mar 2019 17:20:01 +0800 [thread overview] Message-ID: <20190329092001.GK4234@localhost.localdomain> (raw) In-Reply-To: <20190329091655.GE7627@MiWiFi-R3L-srv> On Fri, Mar 29, 2019 at 05:16:55PM +0800, bhe@redhat.com wrote: >On 03/29/19 at 04:29pm, Chao Fan wrote: >> On Fri, Mar 29, 2019 at 07:20:38AM +0000, Junichi Nomura wrote: >> >Commit 3a63f70bf4c3a ("x86/boot: Early parse RSDP and save it in >> >boot_params") broke kexec boot on EFI systems. efi_get_rsdp_addr() >> >in the early parsing code tries to search RSDP from EFI table but >> >that will crash because the table address is virtual when the kernel >> >was booted by kexec. >> [...] >> >- guid = tbl->guid; >> >- table = tbl->table; >> >- } >> >- >> >- if (!(efi_guidcmp(guid, ACPI_TABLE_GUID))) >> >- rsdp_addr = table; >> >- else if (!(efi_guidcmp(guid, ACPI_20_TABLE_GUID))) >> >- return table; >> >- } >> >+ return __efi_get_rsdp_addr(config_tables, nr_tables, efi_64); >> >+#else >> >+ return 0; >> > #endif >> >- return rsdp_addr; >> >> I remeber the rsdp_addr is defined before #ifdef CONFIG_EFI >> If so, you don't need >> #else >> return 0; > >it doesn't change the old logic. Junichi moved rsdp_addr definition inside >the CONFIG_EFI iedeffery block. Yes, got it. Thanks for your explain. Thanks, Chao Fan >> >> BY the way, what's your patch based on? I like add patch on my local >> branch and then review code, but failed. >> I try to use 'patch -p1 <' your patch to the latest tip master branch, >> but failed. >> >> Thanks, >> Chao Fan >> >> > } >> > >> > static u8 compute_checksum(u8 *buffer, u32 length) >> >@@ -221,6 +284,9 @@ acpi_physical_address get_rsdp_addr(void) >> > pa = boot_params->acpi_rsdp_addr; >> > >> > if (!pa) >> >+ pa = kexec_get_rsdp_addr(); >> >+ >> >+ if (!pa) >> > pa = efi_get_rsdp_addr(); >> > >> > if (!pa) >> > >> > >> >> > >
next prev parent reply other threads:[~2019-03-29 9:21 UTC|newest] Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-03-22 11:03 [PATCH] x86/boot: Use EFI setup data if provided Junichi Nomura 2019-03-22 15:23 ` Borislav Petkov 2019-03-25 0:27 ` Junichi Nomura 2019-03-25 6:01 ` Dave Young 2019-03-25 6:19 ` Dave Young 2019-03-25 6:45 ` Kairui Song 2019-03-25 6:47 ` Junichi Nomura 2019-03-25 6:59 ` Dave Young 2019-03-25 8:27 ` [PATCH v2] " Junichi Nomura 2019-03-25 8:54 ` Boris Petkov 2019-03-25 9:25 ` [PATCH v2] x86/boot: Don't try to search RSDP from EFI when kexec-booted Junichi Nomura 2019-03-25 10:15 ` [PATCH v2] x86/boot: Use EFI setup data if provided Dave Young 2019-03-25 10:36 ` Junichi Nomura 2019-03-25 11:16 ` Dave Young 2019-03-25 12:01 ` Borislav Petkov 2019-03-25 12:23 ` Dave Young 2019-03-25 12:32 ` Borislav Petkov 2019-03-25 23:10 ` Junichi Nomura 2019-03-26 12:46 ` Dave Young 2019-03-26 13:57 ` Borislav Petkov 2019-03-27 1:48 ` bhe 2019-03-27 12:14 ` Borislav Petkov 2019-03-28 4:17 ` Junichi Nomura 2019-03-28 6:26 ` Chao Fan 2019-03-28 6:43 ` bhe 2019-03-28 7:43 ` Junichi Nomura 2019-03-28 15:52 ` Borislav Petkov 2019-03-29 3:05 ` Junichi Nomura 2019-03-29 8:39 ` Borislav Petkov 2019-03-29 9:05 ` Chao Fan 2019-03-29 9:16 ` Borislav Petkov 2019-03-29 9:37 ` Junichi Nomura 2019-03-29 9:44 ` Chao Fan 2019-03-29 9:56 ` Junichi Nomura 2019-03-29 7:20 ` [PATCH] x86/boot: Use efi_setup_data for searching RSDP on kexec-ed kernel Junichi Nomura 2019-03-29 7:49 ` bhe 2019-03-29 8:29 ` Chao Fan 2019-03-29 8:39 ` Junichi Nomura 2019-03-29 9:18 ` Chao Fan 2019-03-29 9:16 ` bhe 2019-03-29 9:20 ` Chao Fan [this message] 2019-04-01 0:08 ` [PATCH v2] " Junichi Nomura 2019-04-02 9:41 ` Chao Fan 2019-04-02 9:53 ` Junichi Nomura 2019-04-02 11:06 ` Chao Fan 2019-04-02 10:22 ` Junichi Nomura 2019-04-02 12:03 ` Dave Young 2019-04-03 5:35 ` Chao Fan 2019-04-03 5:53 ` Dave Young 2019-04-03 6:39 ` Dave Young 2019-04-03 7:30 ` Chao Fan 2019-04-03 7:50 ` bhe 2019-04-03 8:23 ` Dave Young 2019-04-03 8:26 ` Dave Young 2019-04-03 16:14 ` Borislav Petkov 2019-04-04 1:02 ` Chao Fan 2019-04-03 9:28 ` Chao Fan 2019-04-03 7:21 ` Chao Fan 2019-04-03 8:09 ` Dave Young 2019-04-03 8:23 ` Chao Fan 2019-04-03 9:02 ` Chao Fan 2019-04-03 9:39 ` Chao Fan 2019-04-04 1:23 ` Junichi Nomura 2019-04-04 2:52 ` Dave Young 2019-04-04 3:00 ` bhe 2019-04-04 3:10 ` bhe 2019-04-04 3:22 ` Dave Young 2019-04-04 6:41 ` Dave Young 2019-04-04 7:20 ` Chao Fan 2019-04-04 7:41 ` Dave Young 2019-04-04 7:48 ` Chao Fan 2019-04-04 12:22 ` Borislav Petkov 2019-04-04 14:08 ` Dave Young 2019-04-03 8:18 ` Dave Young 2019-04-02 10:25 ` [PATCH v3] " Junichi Nomura 2019-04-04 7:32 ` Dave Young 2019-04-04 12:24 ` Borislav Petkov 2019-04-04 14:12 ` Dave Young 2019-04-04 14:41 ` Borislav Petkov 2019-04-05 1:36 ` Dave Young 2019-04-05 4:19 ` Junichi Nomura 2019-03-28 23:11 ` [PATCH v2] x86/boot: Use EFI setup data if provided bhe 2019-03-29 3:34 ` Junichi Nomura 2019-03-29 3:52 ` bhe 2019-03-29 5:16 ` Junichi Nomura 2019-03-25 7:27 ` [PATCH] " Baoquan He 2019-03-25 7:53 ` Borislav Petkov 2019-03-25 8:21 ` Baoquan He 2019-03-25 8:43 ` Thomas Gleixner 2019-03-25 9:03 ` Baoquan He
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=20190329092001.GK4234@localhost.localdomain \ --to=fanc.fnst@cn.fujitsu.com \ --cc=bhe@redhat.com \ --cc=bp@alien8.de \ --cc=dyoung@redhat.com \ --cc=j-nomura@ce.jp.nec.com \ --cc=kasong@redhat.com \ --cc=kexec@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=x86@kernel.org \ --subject='Re: [PATCH] x86/boot: Use efi_setup_data for searching RSDP on kexec-ed kernel' \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: link
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for NNTP newsgroup(s).