Re: [PATCH v2 1/2] x86: Check return values from early_memremap calls

[Juergen Gross]

On 10.11.22 16:45, Ross Philipson wrote:
> There are a number of places where early_memremap is called
> but the return pointer is not checked for NULL. The call
> can result in a NULL being returned so the checks must
> be added.
>
> Note that the maintainers for both the Jailhouse and Xen code
> approved of using panic() to handle allocation failures.
>
> In addition to checking the return values, a bit of extra
> cleanup of pr_* usages was done since the pr_fmt macro was
> introduced in the modules touched by this patch.
>
> Signed-off-by: Ross Philipson <ross.philipson@xxxxxxxxxx>
> ---
>   arch/x86/kernel/devicetree.c | 13 +++++++++++
>   arch/x86/kernel/e820.c       | 12 +++++++++--
>   arch/x86/kernel/jailhouse.c  |  6 ++++++
>   arch/x86/kernel/mpparse.c    | 51 +++++++++++++++++++++++++++++++++-----------
>   arch/x86/kernel/setup.c      | 19 ++++++++++++++---
>   arch/x86/xen/enlighten_hvm.c |  2 ++
>   arch/x86/xen/mmu_pv.c        |  8 +++++++
>   arch/x86/xen/setup.c         |  2 ++
>   8 files changed, 95 insertions(+), 18 deletions(-)

For the Xen parts:

Reviewed-by: Juergen Gross <jgross@xxxxxxxx>


Juergen

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