diff options
| author | Ingo Molnar <mingo@kernel.org> | 2025-05-15 15:05:19 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-12-14 11:19:37 +0300 |
| commit | 3814bf08452ecfc6db0de53a2e4f977e9661c1f4 (patch) | |
| tree | 20f7ebf653a29a95c110bdc61608257ae0b3805c | |
| parent | 0bb4a8bdbd22fda17660fdd4c086adaf4970239b (diff) | |
| download | linux-3814bf08452ecfc6db0de53a2e4f977e9661c1f4.tar.xz | |
x86/boot/e820: Simplify the PPro Erratum #50 workaround
No need to print out the table - users won't really be able
to tell much from it anyway and the messages around this
erratum are unnecessarily obtuse.
Instead clearly inform the user that a 256 kB hole is being
punched in their memory map at the 1.75 GB physical address.
Not that there are many PPro users left. :-)
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: H . Peter Anvin <hpa@zytor.com>
Cc: Andy Shevchenko <andy@kernel.org>
Cc: Arnd Bergmann <arnd@kernel.org>
Cc: David Woodhouse <dwmw@amazon.co.uk>
Cc: Juergen Gross <jgross@suse.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Paul Menzel <pmenzel@molgen.mpg.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://patch.msgid.link/20250515120549.2820541-4-mingo@kernel.org
| -rw-r--r-- | arch/x86/kernel/setup.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c index 1b2edd07a3e1..a231b249d23b 100644 --- a/arch/x86/kernel/setup.c +++ b/arch/x86/kernel/setup.c @@ -1015,11 +1015,9 @@ void __init setup_arch(char **cmdline_p) trim_bios_range(); #ifdef CONFIG_X86_32 if (ppro_with_ram_bug()) { - e820__range_update(0x70000000ULL, 0x40000ULL, E820_TYPE_RAM, - E820_TYPE_RESERVED); + pr_info("Applying PPro RAM bug workaround: punching 256 kB hole at 1.75 GB physical.\n"); + e820__range_update(0x70000000ULL, SZ_256K, E820_TYPE_RAM, E820_TYPE_RESERVED); e820__update_table(e820_table); - printk(KERN_INFO "fixed physical RAM map:\n"); - e820__print_table("bad_ppro"); } #else early_gart_iommu_check(); |