From: Chao Fan <fanc.fnst@cn.fujitsu.com>
To: <linux-kernel@vger.kernel.org>, <x86@kernel.org>,
<linux-efi@vger.kernel.org>, <linux-acpi@vger.kernel.org>,
<bp@alien8.de>, <tglx@linutronix.de>, <mingo@redhat.com>,
<hpa@zytor.com>, <keescook@chromium.org>, <bhe@redhat.com>,
<msys.mizuma@gmail.com>
Cc: <indou.takao@jp.fujitsu.com>, <caoj.fnst@cn.fujitsu.com>,
<fanc.fnst@cn.fujitsu.com>
Subject: [PATCH v9 7/8] x86/boot/KASLR: Walk srat tables to filter immovable memory
Date: Wed, 17 Oct 2018 18:20:11 +0800 [thread overview]
Message-ID: <20181017102012.872-8-fanc.fnst@cn.fujitsu.com> (raw)
In-Reply-To: <20181017102012.872-1-fanc.fnst@cn.fujitsu.com>
If CONFIG_MEMORY_HOTREMOVE enabled, walk through the acpi srat memory
tables and store those immovable memory regions so that kaslr can get
where to choose for randomization.
Signed-off-by: Chao Fan <fanc.fnst@cn.fujitsu.com>
---
arch/x86/boot/compressed/kaslr.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/x86/boot/compressed/kaslr.c b/arch/x86/boot/compressed/kaslr.c
index 9ed9709d9947..0c3567bc231c 100644
--- a/arch/x86/boot/compressed/kaslr.c
+++ b/arch/x86/boot/compressed/kaslr.c
@@ -417,6 +417,11 @@ static void mem_avoid_init(unsigned long input, unsigned long input_size,
/* Mark the memmap regions we need to avoid */
handle_mem_options();
+#ifdef CONFIG_MEMORY_HOTREMOVE
+ /* Mark the immovable regions we need to choose */
+ get_immovable_mem();
+#endif
+
#ifdef CONFIG_X86_VERBOSE_BOOTUP
/* Make sure video RAM can be used. */
add_identity_map(0, PMD_SIZE);
--
2.17.2
next prev parent reply other threads:[~2018-10-17 10:21 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-17 10:20 [PATCH v9 0/8] x86/boot/KASLR: Parse ACPI table and limit kaslr in immovable memory Chao Fan
2018-10-17 10:20 ` [PATCH v9 1/8] x86/boot: Introduce cmdline_find_option_arg()to detect if option=arg in cmdline Chao Fan
2018-10-18 4:01 ` Baoquan He
2018-10-18 6:15 ` Chao Fan
2018-10-17 10:20 ` [PATCH v9 2/8] x86/boot: Copy kstrtoull() to compressed period Chao Fan
2018-10-18 4:03 ` Baoquan He
2018-10-18 5:51 ` Chao Fan
2018-10-18 6:01 ` Baoquan He
2018-10-18 6:08 ` Chao Fan
2018-10-17 10:20 ` [PATCH v9 3/8] x86/boot: Add efi_get_rsdp_addr() to dig out RSDP from EFI table Chao Fan
2018-10-18 4:35 ` Baoquan He
2018-10-18 5:54 ` Chao Fan
2018-10-18 5:56 ` Baoquan He
2018-10-18 6:10 ` Chao Fan
2018-10-17 10:20 ` [PATCH v9 4/8] x86/boot: Add bios_get_rsdp_addr() to search RSDP in memory Chao Fan
2018-10-17 10:20 ` [PATCH v9 5/8] x86/boot: Add get_acpi_rsdp() to parse RSDP in cmdlien from kexec Chao Fan
2018-10-21 2:26 ` Baoquan He
2018-10-22 5:30 ` Fan, Chao
2018-10-22 6:06 ` Baoquan He
2018-10-22 7:30 ` Chao Fan
2018-10-22 7:36 ` Baoquan He
2018-10-17 10:20 ` [PATCH v9 6/8] x86/boot: Dig out SRAT table from RSDP and find immovable memory Chao Fan
2018-10-18 6:12 ` Chao Fan
2018-10-21 2:34 ` Baoquan He
2018-10-22 5:29 ` Fan, Chao
2018-10-22 6:08 ` Baoquan He
2018-10-17 10:20 ` Chao Fan [this message]
2018-10-18 4:23 ` [PATCH v9 7/8] x86/boot/KASLR: Walk srat tables to filter " Baoquan He
2018-10-18 5:56 ` Chao Fan
2018-10-17 10:20 ` [PATCH v9 8/8] x86/boot/KASLR: Limit kaslr to choosing the " Chao Fan
2018-10-18 4:21 ` Baoquan He
2018-10-22 10:13 ` Chao Fan
2018-10-22 10:24 ` Baoquan He
2018-10-22 10:49 ` Chao Fan
2018-10-18 3:59 ` [PATCH v9 0/8] x86/boot/KASLR: Parse ACPI table and limit kaslr in " Baoquan He
2018-10-18 5:48 ` Chao Fan
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