Re: [RESEND PATCH -fixes 2/2] Documentation: kdump: Add va_kernel_pa_offset for RISCV64

From: Alexandre Ghiti
Date: Tue Jul 25 2023 - 03:48:39 EST



On 24/07/2023 12:09, Song Shuai wrote:
RISC-V Linux exports "va_kernel_pa_offset" in vmcoreinfo to help
Crash-utility translate the kernel virtual address correctly.

Here adds the definition of "va_kernel_pa_offset".

Fixes: 3335068f8721 ("riscv: Use PUD/P4D/PGD pages for the linear mapping")
Link: https://lore.kernel.org/linux-riscv/20230724040649.220279-1-suagrfillet@xxxxxxxxx/
Signed-off-by: Song Shuai <suagrfillet@xxxxxxxxx>
---
Documentation/admin-guide/kdump/vmcoreinfo.rst | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/Documentation/admin-guide/kdump/vmcoreinfo.rst b/Documentation/admin-guide/kdump/vmcoreinfo.rst
index c18d94fa6470..f8ebb63b6c5d 100644
--- a/Documentation/admin-guide/kdump/vmcoreinfo.rst
+++ b/Documentation/admin-guide/kdump/vmcoreinfo.rst
@@ -624,3 +624,9 @@ Used to get the correct ranges:
* VMALLOC_START ~ VMALLOC_END : vmalloc() / ioremap() space.
* VMEMMAP_START ~ VMEMMAP_END : vmemmap space, used for struct page array.
* KERNEL_LINK_ADDR : start address of Kernel link and BPF
+
+va_kernel_pa_offset
+-------------------
+
+Indicates the offset between the kernel virtual and physical mappings.
+Used to translate virtual to physical addresses.


You can add:

Reviewed-by: Alexandre Ghiti <alexghiti@xxxxxxxxxxxx>

Thanks,

Alex