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Re: [PATCH 4/5] x86/kernel: Move page table macros to new header
- To: Jason Andryuk <jason.andryuk@xxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Thomas Gleixner <tglx@xxxxxxxxxxxxx>, Ingo Molnar <mingo@xxxxxxxxxx>, Borislav Petkov <bp@xxxxxxxxx>, Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>, x86@xxxxxxxxxx, "H. Peter Anvin" <hpa@xxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Oleksandr Tyshchenko <oleksandr_tyshchenko@xxxxxxxx>, Paolo Bonzini <pbonzini@xxxxxxxxxx>
- From: Juergen Gross <jgross@xxxxxxxx>
- Date: Thu, 23 May 2024 13:40:18 +0200
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- Cc: xen-devel@xxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
- Delivery-date: Thu, 23 May 2024 11:40:25 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 10.04.24 21:48, Jason Andryuk wrote:
The PVH entry point will need an additional set of prebuild page tables.
Move the macros and defines to a new header so they can be re-used.
Signed-off-by: Jason Andryuk <jason.andryuk@xxxxxxx>
With the one nit below addressed:
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
...
diff --git a/arch/x86/kernel/pgtable_64_helpers.h
b/arch/x86/kernel/pgtable_64_helpers.h
new file mode 100644
index 000000000000..0ae87d768ce2
--- /dev/null
+++ b/arch/x86/kernel/pgtable_64_helpers.h
@@ -0,0 +1,28 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __PGTABLES_64_H__
+#define __PGTABLES_64_H__
+
+#ifdef __ASSEMBLY__
+
+#define l4_index(x) (((x) >> 39) & 511)
+#define pud_index(x) (((x) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
Please fix the minor style issue in this line by s/-/ - /
Juergen
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