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Re: [PATCH] xenfs/xensyms: respect hypervisor's "next" indication
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Fri, 14 Mar 2025 08:42:12 +0100
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- Cc: Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>
- Delivery-date: Fri, 14 Mar 2025 07:42:25 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 12.03.25 16:32, Jan Beulich wrote:
The interface specifies the symnum field as an input and output; the
hypervisor sets it to the next sequential symbol's index. xensyms_next()
incrementing the position explicitly (and xensyms_next_sym()
decrementing it to "rewind") is only correct as long as the sequence of
symbol indexes is non-sparse. Use the hypervisor-supplied value instead
to update the position in xensyms_next(), and use the saved incoming
index in xensyms_next_sym().
Fixes: a11f4f0a4e18 ("xen: xensyms support")
Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
---
Not sure if this is to be considered stable (backport) material.
I think it should be added to stable kernels. Will add stable@xxxxxxxxxx
to Cc:
Juergen
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