linux-kernel - Re: [PATCH] selftests: kvm: fix overlapping addresses in memslot_perf

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Date:   Fri, 28 May 2021 21:51:48 +0200
From:   "Maciej S. Szmigiero" <maciej.szmigiero@...cle.com>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH] selftests: kvm: fix overlapping addresses in
 memslot_perf_test

On 28.05.2021 21:11, Paolo Bonzini wrote:
> The memory that is allocated in vm_create is already mapped close to
> GPA 0, because test_execute passes the requested memory to
> prepare_vm.  This causes overlapping memory regions and the
> test crashes.  For simplicity just move MEM_GPA higher.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>

I am not sure that I understand the issue correctly, is vm_create_default()
already reserving low GPAs (around 0x10000000) on some arches or run
environments?

Thanks,
Maciej