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Re: [PATCH 4/4] xen/virtual-region: Drop setup_virtual_regions()


  • To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Mon, 18 Mar 2024 15:23:07 +0100
  • Autocrypt: addr=jbeulich@xxxxxxxx; keydata= xsDiBFk3nEQRBADAEaSw6zC/EJkiwGPXbWtPxl2xCdSoeepS07jW8UgcHNurfHvUzogEq5xk hu507c3BarVjyWCJOylMNR98Yd8VqD9UfmX0Hb8/BrA+Hl6/DB/eqGptrf4BSRwcZQM32aZK 7Pj2XbGWIUrZrd70x1eAP9QE3P79Y2oLrsCgbZJfEwCgvz9JjGmQqQkRiTVzlZVCJYcyGGsD /0tbFCzD2h20ahe8rC1gbb3K3qk+LpBtvjBu1RY9drYk0NymiGbJWZgab6t1jM7sk2vuf0Py O9Hf9XBmK0uE9IgMaiCpc32XV9oASz6UJebwkX+zF2jG5I1BfnO9g7KlotcA/v5ClMjgo6Gl MDY4HxoSRu3i1cqqSDtVlt+AOVBJBACrZcnHAUSuCXBPy0jOlBhxPqRWv6ND4c9PH1xjQ3NP nxJuMBS8rnNg22uyfAgmBKNLpLgAGVRMZGaGoJObGf72s6TeIqKJo/LtggAS9qAUiuKVnygo 3wjfkS9A3DRO+SpU7JqWdsveeIQyeyEJ/8PTowmSQLakF+3fote9ybzd880fSmFuIEJldWxp Y2ggPGpiZXVsaWNoQHN1c2UuY29tPsJgBBMRAgAgBQJZN5xEAhsDBgsJCAcDAgQVAggDBBYC AwECHgECF4AACgkQoDSui/t3IH4J+wCfQ5jHdEjCRHj23O/5ttg9r9OIruwAn3103WUITZee e7Sbg12UgcQ5lv7SzsFNBFk3nEQQCACCuTjCjFOUdi5Nm244F+78kLghRcin/awv+IrTcIWF hUpSs1Y91iQQ7KItirz5uwCPlwejSJDQJLIS+QtJHaXDXeV6NI0Uef1hP20+y8qydDiVkv6l IreXjTb7DvksRgJNvCkWtYnlS3mYvQ9NzS9PhyALWbXnH6sIJd2O9lKS1Mrfq+y0IXCP10eS FFGg+Av3IQeFatkJAyju0PPthyTqxSI4lZYuJVPknzgaeuJv/2NccrPvmeDg6Coe7ZIeQ8Yj t0ARxu2xytAkkLCel1Lz1WLmwLstV30g80nkgZf/wr+/BXJW/oIvRlonUkxv+IbBM3dX2OV8 AmRv1ySWPTP7AAMFB/9PQK/VtlNUJvg8GXj9ootzrteGfVZVVT4XBJkfwBcpC/XcPzldjv+3 HYudvpdNK3lLujXeA5fLOH+Z/G9WBc5pFVSMocI71I8bT8lIAzreg0WvkWg5V2WZsUMlnDL9 mpwIGFhlbM3gfDMs7MPMu8YQRFVdUvtSpaAs8OFfGQ0ia3LGZcjA6Ik2+xcqscEJzNH+qh8V m5jjp28yZgaqTaRbg3M/+MTbMpicpZuqF4rnB0AQD12/3BNWDR6bmh+EkYSMcEIpQmBM51qM EKYTQGybRCjpnKHGOxG0rfFY1085mBDZCH5Kx0cl0HVJuQKC+dV2ZY5AqjcKwAxpE75MLFkr wkkEGBECAAkFAlk3nEQCGwwACgkQoDSui/t3IH7nnwCfcJWUDUFKdCsBH/E5d+0ZnMQi+G0A nAuWpQkjM1ASeQwSHEeAWPgskBQL
  • Cc: Roger Pau Monné <roger.pau@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Bertrand Marquis <bertrand.marquis@xxxxxxx>, Michal Orzel <michal.orzel@xxxxxxx>, Oleksii Kurochko <oleksii.kurochko@xxxxxxxxx>, Shawn Anastasio <sanastasio@xxxxxxxxxxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
  • Delivery-date: Mon, 18 Mar 2024 14:23:17 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 18.03.2024 14:49, Andrew Cooper wrote:
> On 18/03/2024 1:29 pm, Jan Beulich wrote:
>> On 18.03.2024 12:04, Andrew Cooper wrote:
>>> --- a/xen/common/virtual_region.c
>>> +++ b/xen/common/virtual_region.c
>>> @@ -39,6 +39,11 @@ static struct virtual_region core = {
>>>          { __start_bug_frames_2, __stop_bug_frames_2 },
>>>          { __start_bug_frames_3, __stop_bug_frames_3 },
>>>      },
>>> +
>>> +#ifdef CONFIG_X86
>>> +    .ex = __start___ex_table,
>>> +    .ex_end = __stop___ex_table,
>>> +#endif
>>>  };
>>>  
>>>  /* Becomes irrelevant when __init sections are cleared. */
>>> @@ -57,6 +62,11 @@ static struct virtual_region core_init __initdata = {
>>>          { __start_bug_frames_2, __stop_bug_frames_2 },
>>>          { __start_bug_frames_3, __stop_bug_frames_3 },
>>>      },
>>> +
>>> +#ifdef CONFIG_X86
>>> +    .ex = __start___ex_table,
>>> +    .ex_end = __stop___ex_table,
>>> +#endif
>>>  };
>> My main reservation here is this x86-specific code in a common file.
>> Are we certain both RISC-V and PPC will get away without needing to
>> touch this? If so, I might consider ack-ing. But really I'd prefer if
>> this could be minimally abstracted, via e.g. CONFIG_HAS_EXTABLE
>> (selected by x86 only for now).
> 
> This isn't the first bit of CONFIG_X86 in this file.  However, I'd not
> spotted that we have CONFIG_HAS_EX_TABLE already.  I can swap.

At which point:
Reviewed-by: Jan Beulich <jbeulich@xxxxxxxx>

Jan



 


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