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Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRB
From: |
Cornelia Huck |
Subject: |
Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE |
Date: |
Fri, 06 Aug 2021 13:25:33 +0200 |
User-agent: |
Notmuch/0.32.1 (https://notmuchmail.org) |
On Fri, Aug 06 2021, David Hildenbrand <david@redhat.com> wrote:
> On 06.08.21 09:11, Thomas Huth wrote:
>> On 06/08/2021 08.52, David Hildenbrand wrote:
>>>>
>>>> According to the PoP:
>>>>
>>>> "When the enhanced-DAT facility 1 is not installed, or
>>>> when the facility is installed but the multiple-block
>>>> control is zero, general register R 2 contains a real
>>>> address. When the enhanced-DAT facility 1 is
>>>> installed and the multiple-block control is one, gen-
>>>> eral register R 2 contains an absolute address."
>>>>
>>>> Don't we have to take that into consideration here, too?
>>>
>>> We don't support EDAT1 a.k.a. huge pages yet. If we ever do, we have to
>>> further extend this code.
>>
>> Ok, then maybe add a comment or assert() to make sure that we don't forget?
>
> Well, we'll need modifications and extensions all over the place to
> support EDAT1, so I'm not sure this will really help ... we'll have to
> carefully scan the PoP either way.
Something like
/* always real address, as long as we don't implement EDAT1 */
would still be useful, I think.
- Re: [PATCH v1 01/12] s390x/tcg: wrap address for RRBE, (continued)
- [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE, David Hildenbrand, 2021/08/05
- Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE, Thomas Huth, 2021/08/06
- Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE, David Hildenbrand, 2021/08/06
- Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE, Thomas Huth, 2021/08/06
- Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE, David Hildenbrand, 2021/08/06
- Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE,
Cornelia Huck <=
- Re: [PATCH v1 03/12] s390x/tcg: convert real to absolute address for RRBE, SSKE and ISKE, David Hildenbrand, 2021/08/06
[PATCH v1 04/12] s390x/tcg: check for addressing exceptions for for RRBE, SSKE and ISKE, David Hildenbrand, 2021/08/05
[PATCH v1 05/12] s390x/mmu_helper: no need to pass access type to mmu_translate_asce(), David Hildenbrand, 2021/08/05
[PATCH v1 06/12] s390x/mmu_helper: fixup mmu_translate() documentation, David Hildenbrand, 2021/08/05