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From: Julien Grall <julien@xen.org>
To: xen-devel@lists.xenproject.org
Cc: Luca.Fancellu@arm.com, michal.orzel@amd.com, Henry.Wang@arm.com,
	Julien Grall <jgrall@amazon.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	Julien Grall <julien@xen.org>,
	Bertrand Marquis <bertrand.marquis@arm.com>,
	Volodymyr Babchuk <Volodymyr_Babchuk@epam.com>
Subject: [PATCH 4/9] xen/arm32: head: Remove 'r6' from the clobber list of create_page_tables()
Date: Sun, 25 Jun 2023 21:49:02 +0100	[thread overview]
Message-ID: <20230625204907.57291-5-julien@xen.org> (raw)
In-Reply-To: <20230625204907.57291-1-julien@xen.org>

From: Julien Grall <jgrall@amazon.com>

Since commit 62529f16c8a2 ("xen/arm32: head: Use a page mapping for the
1:1 mapping in create_page_tables()"), the register 'r6' is not used
anymore within create_page_tables(). So remove it from the documentation.

Signed-off-by: Julien Grall <jgrall@amazon.com>
---
 xen/arch/arm/arm32/head.S | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/xen/arch/arm/arm32/head.S b/xen/arch/arm/arm32/head.S
index 997c8a4fbbc1..5e3692eb3abf 100644
--- a/xen/arch/arm/arm32/head.S
+++ b/xen/arch/arm/arm32/head.S
@@ -451,10 +451,7 @@ ENDPROC(cpu_init)
  * Output:
  *   r12: Was a temporary mapping created?
  *
- * Clobbers r0 - r4, r6
- *
- * Register usage within this function:
- *   r6 : Identity map in place
+ * Clobbers r0 - r4
  */
 create_page_tables:
         /* Prepare the page-tables for mapping Xen */
-- 
2.40.1



  parent reply	other threads:[~2023-06-25 20:49 UTC|newest]

Thread overview: 45+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-25 20:48 [PATCH 0/9] xen/arm: Enable UBSAN support Julien Grall
2023-06-25 20:48 ` [PATCH 1/9] xen/arm: Check Xen size when linking Julien Grall
2023-06-26  6:15   ` Henry Wang
2023-06-26  7:10     ` Julien Grall
2023-06-26  7:14       ` Henry Wang
2023-06-26 11:24   ` Michal Orzel
2023-06-28 18:13     ` Julien Grall
2023-06-25 20:49 ` [PATCH 2/9] xen/arm64: head: Don't map too much in boot_third Julien Grall
2023-06-26 11:28   ` Michal Orzel
2023-06-28 18:21     ` Julien Grall
2023-06-29  7:26       ` Michal Orzel
2023-06-29 12:28         ` Julien Grall
2023-06-25 20:49 ` [PATCH 3/9] xen/arm32: " Julien Grall
2023-06-26 11:30   ` Michal Orzel
2023-06-25 20:49 ` Julien Grall [this message]
2023-06-26  6:37   ` [PATCH 4/9] xen/arm32: head: Remove 'r6' from the clobber list of create_page_tables() Henry Wang
2023-06-26 11:31   ` Michal Orzel
2023-06-28 10:12   ` Bertrand Marquis
2023-06-25 20:49 ` [PATCH 5/9] xen/arm: Rework the code mapping Xen to avoid relying on the size of Xen Julien Grall
2023-06-26 11:43   ` Michal Orzel
2023-06-28 20:02     ` Julien Grall
2023-06-29  7:30       ` Michal Orzel
2023-06-25 20:49 ` [PATCH 6/9] xen/arm64: entry: Don't jump outside of an alternative Julien Grall
2023-06-27  7:52   ` Michal Orzel
2023-06-25 20:49 ` [PATCH 7/9] xen/arm64: head: Rework PRINT() to work when the string is not withing +/- 1MB Julien Grall
2023-06-26 11:50   ` Michal Orzel
2023-06-26 14:44   ` Henry Wang
2023-06-25 20:49 ` [PATCH 8/9] xen/arm: Allow the user to build Xen with USBAN Julien Grall
2023-06-26  7:29   ` Henry Wang
2023-06-26 11:57     ` Andrew Cooper
2023-06-28 20:35     ` Julien Grall
2023-06-29  1:36       ` Henry Wang
2023-06-29 20:01         ` Julien Grall
2023-06-26 11:56   ` Michal Orzel
2023-06-26 12:56     ` Julien Grall
2023-06-27  8:09       ` Michal Orzel
2023-06-28 20:39         ` Julien Grall
2023-06-28 22:16           ` Luca Fancellu
2023-06-29  7:31           ` Michal Orzel
2023-06-25 20:49 ` [PATCH 9/9] xen/arm32: vfp: Add missing U for shifted constant Julien Grall
2023-06-26  6:43   ` Henry Wang
2023-06-28 10:09   ` Bertrand Marquis
2023-06-26  5:45 ` [PATCH 0/9] xen/arm: Enable UBSAN support Jan Beulich
2023-06-26  7:18   ` Julien Grall
2023-06-26 14:38 ` Henry Wang

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