From: Julien Grall <julien.grall@arm.com>
To: xen-devel@lists.xenproject.org
Cc: Oleksandr_Tyshchenko@epam.com,
Julien Grall <julien.grall@arm.com>,
Stefano Stabellini <sstabellini@kernel.org>,
Andrii_Anisov@epam.com
Subject: [Xen-devel] [PATCH MM-PART3 v3 0/9] xen/arm: Provide a generic function to update Xen PT
Date: Fri, 14 Jun 2019 18:51:35 +0100 [thread overview]
Message-ID: <20190614175144.20046-1-julien.grall@arm.com> (raw)
Hi all,
This is the third part of the boot/memory rework for Xen on Arm. At the
moment, the update to Xen PT is scattered all around mm.c. This makes
difficult to rework Xen memory layout or even ensuring we are following the
Arm Arm properly (and we are not so far!).
This part contains code to provide a generic function to update Xen PT.
While I could have started from scratch, I decided to base the new function
on create_xen_entries() (now renamed xen_pt_update()). This makes slightly
easier to follow the changes.
In this series, the new generic function will only support 3rd-level update
and cannot be used in early boot (i.e because xenheap is not initialized).
This will be extended in follow-up series to allow more use within mm.c.
There are probably some optimization possible around the TLBs flush. I haven't
looked at it so far.
The last two patches of this series is to show how existing callers can be
converted. There are more conversion to come in follow-up series.
For convenience, I provided a branch with all the patches applied base
on staging.
git://xenbits.xen.org/people/julieng/xen-unstable.git branch mm/part3/v3
Cheers,
Julien Grall (9):
xen/arm: Rework HSCTLR_BASE
xen/arm: mm: Introduce _PAGE_PRESENT and _PAGE_POPULATE
xen/arm: mm: Sanity check any update of Xen page tables
xen/arm: mm: Rework xen_pt_update_entry to avoid use xenmap_operation
xen/arm: mm: Remove enum xenmap_operation
xen/arm: mm: Use {, un}map_domain_page() to map/unmap Xen page-tables
xen/arm: mm: Rework Xen page-tables walk during update
xen/arm: mm: Don't open-code Xen PT update in {set, clear}_fixmap()
xen/arm: mm: Remove set_pte_flags_on_range()
xen/arch/arm/arm32/head.S | 12 +-
xen/arch/arm/arm64/head.S | 10 +-
xen/arch/arm/mm.c | 390 +++++++++++++++++++++++++++-------------
xen/include/asm-arm/page.h | 9 +-
xen/include/asm-arm/processor.h | 56 +++++-
5 files changed, 332 insertions(+), 145 deletions(-)
--
2.11.0
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next reply other threads:[~2019-06-14 17:52 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-14 17:51 Julien Grall [this message]
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 1/9] xen/arm: Rework HSCTLR_BASE Julien Grall
2019-06-14 21:05 ` Stefano Stabellini
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 2/9] xen/arm: mm: Introduce _PAGE_PRESENT and _PAGE_POPULATE Julien Grall
2019-06-14 21:03 ` Stefano Stabellini
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 3/9] xen/arm: mm: Sanity check any update of Xen page tables Julien Grall
2019-06-14 21:02 ` Stefano Stabellini
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 4/9] xen/arm: mm: Rework xen_pt_update_entry to avoid use xenmap_operation Julien Grall
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 5/9] xen/arm: mm: Remove enum xenmap_operation Julien Grall
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 6/9] xen/arm: mm: Use {, un}map_domain_page() to map/unmap Xen page-tables Julien Grall
2019-06-14 21:00 ` Stefano Stabellini
2019-06-16 20:23 ` Julien Grall
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 7/9] xen/arm: mm: Rework Xen page-tables walk during update Julien Grall
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 8/9] xen/arm: mm: Don't open-code Xen PT update in {set, clear}_fixmap() Julien Grall
2019-06-14 17:51 ` [Xen-devel] [PATCH MM-PART3 v3 9/9] xen/arm: mm: Remove set_pte_flags_on_range() Julien Grall
2019-06-14 20:59 ` Stefano Stabellini
2019-06-16 20:45 ` [Xen-devel] [PATCH MM-PART3 v3 0/9] xen/arm: Provide a generic function to update Xen PT Julien Grall
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