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From: Julien Grall <julien.grall@arm.com>
To: xen-devel@lists.xenproject.org
Cc: andre.przywara@arm.com, Julien Grall <julien.grall@arm.com>,
	Stefano Stabellini <sstabellini@kernel.org>,
	andrii_anisov@epam.com, Oleksandr_Tyshchenko@epam.com
Subject: [Xen-devel] [PATCH 04/17] xen/arm64: head: Don't "reserve" x24 for the CPUID
Date: Mon, 10 Jun 2019 20:32:02 +0100	[thread overview]
Message-ID: <20190610193215.23704-5-julien.grall@arm.com> (raw)
In-Reply-To: <20190610193215.23704-1-julien.grall@arm.com>

After the recent rework, the CPUID is only used at the very beginning of
the secondary CPUs boot path. So there is no need to "reserve" x24 for
he CPUID.

Signed-off-by: Julien Grall <julien.grall@arm.com>
---
 xen/arch/arm/arm64/head.S | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/arm64/head.S b/xen/arch/arm/arm64/head.S
index fd432ee15d..84e26582c4 100644
--- a/xen/arch/arm/arm64/head.S
+++ b/xen/arch/arm/arm64/head.S
@@ -69,7 +69,7 @@
  *  x21 - DTB address (boot cpu only)
  *  x22 - is_secondary_cpu
  *  x23 - UART address
- *  x24 - cpuid
+ *  x24 -
  *  x25 - identity map in place
  *  x26 - skip_zero_bss
  *  x27 -
-- 
2.11.0


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  parent reply	other threads:[~2019-06-10 19:32 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-10 19:31 [Xen-devel] [PATCH 00/17] xen/arm64: Rework head.S to make it more compliant with the Arm Arm Julien Grall
2019-06-10 19:31 ` [Xen-devel] [PATCH 01/17] xen/arm64: head Mark the end of subroutines with ENDPROC Julien Grall
2019-06-25 23:23   ` Stefano Stabellini
2019-06-10 19:32 ` [Xen-devel] [PATCH 02/17] xen/arm64: head: Don't clobber x30/lr in the macro PRINT Julien Grall
2019-06-25 23:35   ` Stefano Stabellini
2019-06-25 23:59     ` Stefano Stabellini
2019-06-26  9:07       ` Julien Grall
2019-06-26 15:27         ` Stefano Stabellini
2019-06-26 15:28           ` Julien Grall
2019-06-26 18:32             ` Stefano Stabellini
2019-06-26 19:24               ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 03/17] xen/arm64: head: Rework UART initialization on boot CPU Julien Grall
2019-06-25 23:49   ` Stefano Stabellini
2019-06-10 19:32 ` Julien Grall [this message]
2019-06-26  0:01   ` [Xen-devel] [PATCH 04/17] xen/arm64: head: Don't "reserve" x24 for the CPUID Stefano Stabellini
2019-06-26  9:09     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 05/17] xen/arm64: head: Introduce print_reg Julien Grall
2019-06-26  0:09   ` Stefano Stabellini
2019-06-26  9:10     ` Julien Grall
2019-07-15 18:46   ` Volodymyr Babchuk
2019-07-16  9:55     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 06/17] xen/arm64: head: Introduce distinct paths for the boot CPU and secondary CPUs Julien Grall
2019-06-26  1:00   ` Stefano Stabellini
2019-06-26  9:14     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 07/17] xen/arm64: head: Rework and document check_cpu_mode() Julien Grall
2019-06-26  1:00   ` Stefano Stabellini
2019-06-10 19:32 ` [Xen-devel] [PATCH 08/17] xen/arm64: head: Rework and document zero_bss() Julien Grall
2019-06-26  1:01   ` Stefano Stabellini
2019-06-26  9:16     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 09/17] xen/arm64: head: Improve coding style and document cpu_init() Julien Grall
2019-06-26  1:01   ` Stefano Stabellini
2019-06-26 10:34     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 10/17] xen/arm64: head: Improve coding style and document create_pages_tables() Julien Grall
2019-06-26  1:03   ` Stefano Stabellini
2019-06-26 11:20     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 11/17] xen/arm64: head: Document enable_mmu() Julien Grall
2019-06-26  1:03   ` Stefano Stabellini
2019-06-26 11:23     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 12/17] xen/arm64: head: Move assembly switch to the runtime PT in secondary CPUs path Julien Grall
2019-06-26  1:03   ` Stefano Stabellini
2019-06-10 19:32 ` [Xen-devel] [PATCH 13/17] xen/arm64: head: Don't setup the fixmap on secondary CPUs Julien Grall
2019-06-26 18:51   ` Stefano Stabellini
2019-06-26 19:26     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 14/17] xen/arm64: head: Remove ID map as soon as it is not used Julien Grall
2019-06-26 20:25   ` Stefano Stabellini
2019-06-26 20:39     ` Julien Grall
2019-06-26 20:44       ` Andrew Cooper
2019-06-28  0:36       ` Stefano Stabellini
2019-06-27 18:55   ` Stefano Stabellini
2019-06-27 19:30     ` Julien Grall
2019-07-10 19:39       ` Julien Grall
2019-07-30 17:33       ` Stefano Stabellini
2019-07-30 19:52         ` Julien Grall
2019-07-31 20:40           ` Stefano Stabellini
2019-07-31 21:07             ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 15/17] xen/arm64: head: Rework and document setup_fixmap() Julien Grall
2019-06-26 19:01   ` Stefano Stabellini
2019-06-26 19:30     ` Julien Grall
2019-06-27  9:29       ` Julien Grall
2019-06-27 15:38         ` Stefano Stabellini
2019-06-26 19:02   ` Stefano Stabellini
2019-06-27  9:19     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 16/17] xen/arm64: head: Rework and document launch() Julien Grall
2019-06-26 19:12   ` Stefano Stabellini
2019-06-26 20:09     ` Julien Grall
2019-06-10 19:32 ` [Xen-devel] [PATCH 17/17] xen/arm64: Zero BSS after the MMU and D-cache is turned on Julien Grall
2019-06-26 19:29   ` Stefano Stabellini
2019-06-26 20:07     ` Julien Grall
2019-06-26 21:08       ` Stefano Stabellini
2019-06-27 11:04         ` Julien Grall

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