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Re: [Xen-devel] [PATCH v2 19/23] x86: PIT emulation is common to both PV and HVM
- To: Wei Liu <wei.liu2@xxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Tue, 28 Aug 2018 15:51:51 +0100
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- Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- Delivery-date: Tue, 28 Aug 2018 14:52:34 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Openpgp: preference=signencrypt
On 28/08/18 15:48, Wei Liu wrote:
> On Tue, Aug 28, 2018 at 08:36:37AM -0600, Jan Beulich wrote:
>>>>> On 28.08.18 at 15:19, <wei.liu2@xxxxxxxxxx> wrote:
>>> On Tue, Aug 28, 2018 at 05:44:51AM -0600, Jan Beulich wrote:
>>>>>>> On 26.08.18 at 14:19, <wei.liu2@xxxxxxxxxx> wrote:
>>>>> Move the file to x86 common code and change its name to emul-i8254.c.
>>>>>
>>>>> Put HVM only code under CONFIG_HVM or is_hvm_domain.
>>>>>
>>>>> Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
>>>>> ---
>>>>> v2: move the whole file.
>>>>> ---
>>>>> xen/arch/x86/Makefile | 1 +-
>>>>> xen/arch/x86/emul-i8254.c | 609 +++++++++++++++++++++++++++++++++++++++-
>>>>> xen/arch/x86/hvm/Makefile | 1 +-
>>>>> xen/arch/x86/hvm/i8254.c | 597 +--------------------------------------
>>>>> 4 files changed, 610 insertions(+), 598 deletions(-)
>>>>> create mode 100644 xen/arch/x86/emul-i8254.c
>>>>> delete mode 100644 xen/arch/x86/hvm/i8254.c
>>>> On the assumption that the changes to the file are only CONFIG_HVM
>>>> additions
>>> No only that. There are a few is_hvm_domain calls as well.
>>>
>>>> Acked-by: Jan Beulich <jbeulich@xxxxxxxx>
>>> Does this still stand?
>> Yes, albeit looking at the full diff of the files I'm then a little
>> puzzled about is_hvm_domain() uses: Why does pit_load_count()
>> need an #ifdef added at all, with the is_hvm_vcpu() check
>> right before it?
> Because if I don't do that we get "defined but not used" warnings.
(hopefully) not with the newer is_hvm_vcpu() which evaluates its
arguments properly.
~Andrew
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