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From: Julien Grall <julien@xen.org>
To: xen-devel@lists.xenproject.org
Cc: julien@xen.org, Julien Grall <jgrall@amazon.com>,
	Ian Jackson <iwj@xenproject.org>, Wei Liu <wl@xen.org>,
	michal.orzel@arm.com, olaf@aepfle.de
Subject: [PATCH] tools/xen-foreign: Update the size for vcpu_guest_{core_regs, context}
Date: Tue,  6 Jul 2021 14:20:00 +0100	[thread overview]
Message-ID: <20210706132000.29892-1-julien@xen.org> (raw)

From: Julien Grall <jgrall@amazon.com>

Commit 918b8842a852 ("arm64: Change type of hsr, cpsr, spsr_el1 to
uint64_t") updated the size of the structure vcpu_guest_core_regs and
indirectly vcpu_guest_context.

On Arm, the two structures are only accessible to the tools and the
hypervisor (and therefore stable). However, they are still checked
by the scripts in tools/include/xen-foreign are not able to understand
that.

Ideally we should rework the scripts so we don't have to update
the size for non-stable structure. But I don't have limited time
to spend on the issue. So chose the simple solution and update
the size accordingly.

Note that we need to keep vcpu_guest_core_regs around because
the structure is used by vcpu_guest_context and therefore the
scripts expects the generated header to contain it.

Fixes: 918b8842a852 ("arm64: Change type of hsr, cpsr, spsr_el1 to uint64_t")
Reported-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Julien Grall <jgrall@amazon.com>

---

Cc: michal.orzel@arm.com
Cc: olaf@aepfle.de
---
 tools/include/xen-foreign/reference.size | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/include/xen-foreign/reference.size b/tools/include/xen-foreign/reference.size
index a0409db5c458..11a06a7a432c 100644
--- a/tools/include/xen-foreign/reference.size
+++ b/tools/include/xen-foreign/reference.size
@@ -4,8 +4,8 @@ structs                   |   arm32   arm64  x86_32  x86_64
 start_info                |       -       -    1112    1168
 trap_info                 |       -       -       8      16
 cpu_user_regs             |       -       -      68     200
-vcpu_guest_core_regs      |     304     304       -       -
-vcpu_guest_context        |     344     344    2800    5168
+vcpu_guest_core_regs      |     312     312       -       -
+vcpu_guest_context        |     352     352    2800    5168
 arch_vcpu_info            |       0       0      24      16
 vcpu_time_info            |      32      32      32      32
 vcpu_info                 |      48      48      64      64
-- 
2.17.1



             reply	other threads:[~2021-07-06 13:20 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-06 13:20 Julien Grall [this message]
2021-07-06 13:37 ` [PATCH] tools/xen-foreign: Update the size for vcpu_guest_{core_regs, context} Bertrand Marquis
2021-07-06 14:07 ` Jan Beulich
2021-07-06 14:24   ` Julien Grall
2021-07-06 15:10     ` Jan Beulich
2021-07-06 15:23       ` Julien Grall
2021-07-07  7:44 ` Michal Orzel

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