linux-kernel - Re: [PATCH v10 05/21] KVM: selftests: Expose segment definitons to assembly files

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Message-ID: <c8f85609-aae2-4d5e-b983-e2703bb874c0@linux.intel.com>
Date: Fri, 5 Sep 2025 13:24:08 +0800
From: Binbin Wu <binbin.wu@...ux.intel.com>
To: Sagi Shahar <sagis@...gle.com>
Cc: linux-kselftest@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
 Shuah Khan <shuah@...nel.org>, Sean Christopherson <seanjc@...gle.com>,
 Ackerley Tng <ackerleytng@...gle.com>, Ryan Afranji <afranji@...gle.com>,
 Andrew Jones <ajones@...tanamicro.com>,
 Isaku Yamahata <isaku.yamahata@...el.com>,
 Erdem Aktas <erdemaktas@...gle.com>,
 Rick Edgecombe <rick.p.edgecombe@...el.com>,
 Roger Wang <runanwang@...gle.com>, Oliver Upton <oliver.upton@...ux.dev>,
 "Pratik R. Sampat" <pratikrajesh.sampat@....com>,
 Reinette Chatre <reinette.chatre@...el.com>, Ira Weiny
 <ira.weiny@...el.com>, Chao Gao <chao.gao@...el.com>,
 Chenyi Qiang <chenyi.qiang@...el.com>, linux-kernel@...r.kernel.org,
 kvm@...r.kernel.org
Subject: Re: [PATCH v10 05/21] KVM: selftests: Expose segment definitons to
 assembly files

On 9/4/2025 2:54 PM, Sagi Shahar wrote:
> Move kernel segment definitions to a separate file which can be included
> from assembly files.
>
> Reviewed-by: Ira Weiny <ira.weiny@...el.com>
> Signed-off-by: Sagi Shahar <sagis@...gle.com>

Reviewed-by: Binbin Wu <binbin.wu@...ux.intel.com>

> ---
>   .../selftests/kvm/include/x86/processor_asm.h        | 12 ++++++++++++
>   tools/testing/selftests/kvm/lib/x86/processor.c      |  5 +----
>   2 files changed, 13 insertions(+), 4 deletions(-)
>   create mode 100644 tools/testing/selftests/kvm/include/x86/processor_asm.h
>
> diff --git a/tools/testing/selftests/kvm/include/x86/processor_asm.h b/tools/testing/selftests/kvm/include/x86/processor_asm.h
> new file mode 100644
> index 000000000000..7e5386a85ca8
> --- /dev/null
> +++ b/tools/testing/selftests/kvm/include/x86/processor_asm.h
> @@ -0,0 +1,12 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Used for storing defines used by both processor.c and assembly code.
> + */
> +#ifndef SELFTEST_KVM_PROCESSOR_ASM_H
> +#define SELFTEST_KVM_PROCESSOR_ASM_H
> +
> +#define KERNEL_CS	0x8
> +#define KERNEL_DS	0x10
> +#define KERNEL_TSS	0x18
> +
> +#endif  // SELFTEST_KVM_PROCESSOR_ASM_H
> diff --git a/tools/testing/selftests/kvm/lib/x86/processor.c b/tools/testing/selftests/kvm/lib/x86/processor.c
> index 2a44831e0cc9..623168ea9a44 100644
> --- a/tools/testing/selftests/kvm/lib/x86/processor.c
> +++ b/tools/testing/selftests/kvm/lib/x86/processor.c
> @@ -7,6 +7,7 @@
>   #include "test_util.h"
>   #include "kvm_util.h"
>   #include "processor.h"
> +#include "processor_asm.h"
>   #include "sev.h"
>   #include "tdx/tdx_util.h"
>   
> @@ -14,10 +15,6 @@
>   #define NUM_INTERRUPTS 256
>   #endif
>   
> -#define KERNEL_CS	0x8
> -#define KERNEL_DS	0x10
> -#define KERNEL_TSS	0x18
> -
>   vm_vaddr_t exception_handlers;
>   bool host_cpu_is_amd;
>   bool host_cpu_is_intel;