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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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8c31902cff
When decompressing kernel image during x86 bootup, malloc memory for ELF program headers may run out of heap space, which leads to system halt. This patch doubles BOOT_HEAP_SIZE to 64KB. Tested with 32-bit kernel which failed to boot without this patch. Signed-off-by: H.J. Lu <hjl.tools@gmail.com> Acked-by: H. Peter Anvin <hpa@zytor.com> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-kernel@vger.kernel.org Cc: <stable@vger.kernel.org> Signed-off-by: Ingo Molnar <mingo@kernel.org>
41 lines
998 B
C
41 lines
998 B
C
#ifndef _ASM_X86_BOOT_H
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#define _ASM_X86_BOOT_H
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#include <asm/pgtable_types.h>
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#include <uapi/asm/boot.h>
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/* Physical address where kernel should be loaded. */
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#define LOAD_PHYSICAL_ADDR ((CONFIG_PHYSICAL_START \
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+ (CONFIG_PHYSICAL_ALIGN - 1)) \
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& ~(CONFIG_PHYSICAL_ALIGN - 1))
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/* Minimum kernel alignment, as a power of two */
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#ifdef CONFIG_X86_64
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#define MIN_KERNEL_ALIGN_LG2 PMD_SHIFT
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#else
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#define MIN_KERNEL_ALIGN_LG2 (PAGE_SHIFT + THREAD_SIZE_ORDER)
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#endif
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#define MIN_KERNEL_ALIGN (_AC(1, UL) << MIN_KERNEL_ALIGN_LG2)
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#if (CONFIG_PHYSICAL_ALIGN & (CONFIG_PHYSICAL_ALIGN-1)) || \
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(CONFIG_PHYSICAL_ALIGN < MIN_KERNEL_ALIGN)
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#error "Invalid value for CONFIG_PHYSICAL_ALIGN"
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#endif
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#ifdef CONFIG_KERNEL_BZIP2
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#define BOOT_HEAP_SIZE 0x400000
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#else /* !CONFIG_KERNEL_BZIP2 */
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#define BOOT_HEAP_SIZE 0x10000
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#endif /* !CONFIG_KERNEL_BZIP2 */
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#ifdef CONFIG_X86_64
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#define BOOT_STACK_SIZE 0x4000
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#else
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#define BOOT_STACK_SIZE 0x1000
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#endif
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#endif /* _ASM_X86_BOOT_H */
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