diff options
Diffstat (limited to '0006-x86-setup-remove-CONFIG_X86_RESERVE_LOW-and-reservel.patch')
| -rw-r--r-- | 0006-x86-setup-remove-CONFIG_X86_RESERVE_LOW-and-reservel.patch | 114 |
1 files changed, 0 insertions, 114 deletions
diff --git a/0006-x86-setup-remove-CONFIG_X86_RESERVE_LOW-and-reservel.patch b/0006-x86-setup-remove-CONFIG_X86_RESERVE_LOW-and-reservel.patch deleted file mode 100644 index a49d92c2252b..000000000000 --- a/0006-x86-setup-remove-CONFIG_X86_RESERVE_LOW-and-reservel.patch +++ /dev/null @@ -1,114 +0,0 @@ -From 2e68d15d0a146e9b13bfbaba5f260c82b8c3d049 Mon Sep 17 00:00:00 2001 -From: Mike Rapoport <rppt@linux.ibm.com> -Date: Tue, 1 Jun 2021 10:53:53 +0300 -Subject: [PATCH 6/8] x86/setup: remove CONFIG_X86_RESERVE_LOW and reservelow - options - -The CONFIG_X86_RESERVE_LOW build time and reservelow command line option -allowed to control the amount of memory under 1M that would be reserved at -boot to avoid using memory that can be potentially clobbered by BIOS. - -Since the entire range under 1M is always reserved there is no need for -these options and they can be removed. - -Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> ---- - .../admin-guide/kernel-parameters.txt | 5 ---- - arch/x86/Kconfig | 29 ------------------- - arch/x86/kernel/setup.c | 24 --------------- - 3 files changed, 58 deletions(-) - -diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt -index 835f810f2f26..479cc44cc4e2 100644 ---- a/Documentation/admin-guide/kernel-parameters.txt -+++ b/Documentation/admin-guide/kernel-parameters.txt -@@ -4623,11 +4623,6 @@ - Reserves a hole at the top of the kernel virtual - address space. - -- reservelow= [X86] -- Format: nn[K] -- Set the amount of memory to reserve for BIOS at -- the bottom of the address space. -- - reset_devices [KNL] Force drivers to reset the underlying device - during initialization. - -diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig -index 861b1b794697..fc91be3b1bd1 100644 ---- a/arch/x86/Kconfig -+++ b/arch/x86/Kconfig -@@ -1688,35 +1688,6 @@ config X86_BOOTPARAM_MEMORY_CORRUPTION_CHECK - Set whether the default state of memory_corruption_check is - on or off. - --config X86_RESERVE_LOW -- int "Amount of low memory, in kilobytes, to reserve for the BIOS" -- default 64 -- range 4 640 -- help -- Specify the amount of low memory to reserve for the BIOS. -- -- The first page contains BIOS data structures that the kernel -- must not use, so that page must always be reserved. -- -- By default we reserve the first 64K of physical RAM, as a -- number of BIOSes are known to corrupt that memory range -- during events such as suspend/resume or monitor cable -- insertion, so it must not be used by the kernel. -- -- You can set this to 4 if you are absolutely sure that you -- trust the BIOS to get all its memory reservations and usages -- right. If you know your BIOS have problems beyond the -- default 64K area, you can set this to 640 to avoid using the -- entire low memory range. -- -- If you have doubts about the BIOS (e.g. suspend/resume does -- not work or there's kernel crashes after certain hardware -- hotplug events) then you might want to enable -- X86_CHECK_BIOS_CORRUPTION=y to allow the kernel to check -- typical corruption patterns. -- -- Leave this to the default value of 64 if you are unsure. -- - config MATH_EMULATION - bool - depends on MODIFY_LDT_SYSCALL -diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c -index d7cfb927864f..fbda4bbf75c1 100644 ---- a/arch/x86/kernel/setup.c -+++ b/arch/x86/kernel/setup.c -@@ -695,30 +695,6 @@ static void __init e820_add_kernel_range(void) - e820__range_add(start, size, E820_TYPE_RAM); - } - --static unsigned reserve_low = CONFIG_X86_RESERVE_LOW << 10; -- --static int __init parse_reservelow(char *p) --{ -- unsigned long long size; -- -- if (!p) -- return -EINVAL; -- -- size = memparse(p, &p); -- -- if (size < 4096) -- size = 4096; -- -- if (size > 640*1024) -- size = 640*1024; -- -- reserve_low = size; -- -- return 0; --} -- --early_param("reservelow", parse_reservelow); -- - static void __init early_reserve_memory(void) - { - /* --- -2.32.0 - |