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SubjectRe: [PATCH v17 03/10] x86: kdump: use macro CRASH_ADDR_LOW_MAX in functions reserve_crashkernel()
On 12/15/21 at 02:28pm, Borislav Petkov wrote:
> On Fri, Dec 10, 2021 at 02:55:26PM +0800, Zhen Lei wrote:
> > @@ -518,7 +519,7 @@ static void __init reserve_crashkernel(void)
> > }
> > }
> >
> > - if (crash_base >= (1ULL << 32) && reserve_crashkernel_low()) {
> > + if (crash_base >= CRASH_ADDR_LOW_MAX && reserve_crashkernel_low()) {
> > memblock_phys_free(crash_base, crash_size);
> > return;
> > }
>
> That's not a equivalent transformation on X86_32.

reserve_crashkernel_low() always return 0 on x86_32, so the not equivalent
transformation for x86_32 doesn't matter, I think.

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