lkml.org 
[lkml]   [2021]   [Feb]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] x86: efi: avoid BUILD_BUG_ON() for non-constant p4d_index
On Thu, Feb 04, 2021 at 04:43:58PM -0500, Arvind Sankar wrote:
> This should check EFI_VA_END instead of EFI_VA_START, and maybe throw in
> a BUG_ON if EFI_VA_END >= EFI_VA_START.

No need:

if (efi_va < EFI_VA_END) {
pr_warn(FW_WARN "VA address range overflow!\n");
return;
}

We already check we're not going over at map time. And our runtime
services range is hardcoded. And we're switching to that PGD on each
runtime services call.

So I don't see the point for keeping any of the assertions.

Unless you have other valid arguments for keeping them...

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette

\
 
 \ /
  Last update: 2021-02-04 23:15    [W:0.135 / U:0.496 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site