kexec-tools/rhelonly-kexec-tools-2.0.20-makedumpfile-arm64-Add-support-for-ARMv8.2-LVA-52-bi.patch

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From 0f632fa180e5a44219ab6bbe0879c3583f8c65cf Mon Sep 17 00:00:00 2001
From: Pingfan Liu <piliu@redhat.com>
Date: Tue, 9 Nov 2021 11:24:22 +0800
Subject: [PATCH] RHEL-only
Cope with RHEL8 kernel
Signed-off-by: Pingfan Liu <piliu@redhat.com>
---
arch/arm64.c | 14 +++++++++++++-
makedumpfile.c | 2 ++
makedumpfile.h | 1 +
3 files changed, 16 insertions(+), 1 deletion(-)
diff --git a/makedumpfile-1.7.2/arch/arm64.c b/makedumpfile-1.7.2/arch/arm64.c
index 1072178..95beae6 100644
--- a/makedumpfile-1.7.2/arch/arm64.c
+++ b/makedumpfile-1.7.2/arch/arm64.c
@@ -50,6 +50,7 @@ static int va_bits;
static int vabits_actual;
static int flipped_va;
static unsigned long kimage_voffset;
+static int max_user_va_bits;
#define SZ_4K 4096
#define SZ_16K 16384
@@ -108,7 +109,7 @@ typedef unsigned long pgdval_t;
#define PGDIR_SHIFT ARM64_HW_PGTABLE_LEVEL_SHIFT(4 - (pgtable_level))
#define PGDIR_SIZE (_AC(1, UL) << PGDIR_SHIFT)
#define PGDIR_MASK (~(PGDIR_SIZE-1))
-#define PTRS_PER_PGD (1 << ((va_bits) - PGDIR_SHIFT))
+#define PTRS_PER_PGD (1 << ((max_user_va_bits) - PGDIR_SHIFT))
/*
* Section address mask and size definitions.
@@ -449,6 +450,17 @@ get_machdep_info_arm64(void)
ERRMSG("Can't determine platform config values\n");
return FALSE;
}
+ if (NUMBER(MAX_USER_VA_BITS) != NOT_FOUND_NUMBER) {
+ max_user_va_bits = NUMBER(MAX_USER_VA_BITS);
+ DEBUG_MSG("max_user_va_bits : %d (vmcoreinfo)\n",
+ max_user_va_bits);
+ }
+ if (!max_user_va_bits) {
+ max_user_va_bits = va_bits;
+ DEBUG_MSG("max_user_va_bits : %d (default = va_bits)\n",
+ max_user_va_bits);
+ }
+
kimage_voffset = NUMBER(kimage_voffset);
info->section_size_bits = SECTIONS_SIZE_BITS;
diff --git a/makedumpfile-1.7.2/makedumpfile.c b/makedumpfile-1.7.2/makedumpfile.c
index 3ad4443..018ea4c 100644
--- a/makedumpfile-1.7.2/makedumpfile.c
+++ b/makedumpfile-1.7.2/makedumpfile.c
@@ -2417,6 +2417,7 @@ write_vmcoreinfo_data(void)
WRITE_NUMBER("HUGETLB_PAGE_DTOR", HUGETLB_PAGE_DTOR);
#ifdef __aarch64__
+ WRITE_NUMBER("MAX_USER_VA_BITS", MAX_USER_VA_BITS);
WRITE_NUMBER("VA_BITS", VA_BITS);
/* WRITE_NUMBER("TCR_EL1_T1SZ", TCR_EL1_T1SZ); should not exists */
WRITE_NUMBER_UNSIGNED("PHYS_OFFSET", PHYS_OFFSET);
@@ -2863,6 +2864,7 @@ read_vmcoreinfo(void)
READ_NUMBER("phys_base", phys_base);
READ_NUMBER("KERNEL_IMAGE_SIZE", KERNEL_IMAGE_SIZE);
#ifdef __aarch64__
+ READ_NUMBER("MAX_USER_VA_BITS", MAX_USER_VA_BITS);
READ_NUMBER("VA_BITS", VA_BITS);
READ_NUMBER("TCR_EL1_T1SZ", TCR_EL1_T1SZ);
READ_NUMBER_UNSIGNED("PHYS_OFFSET", PHYS_OFFSET);
diff --git a/makedumpfile-1.7.2/makedumpfile.h b/makedumpfile-1.7.2/makedumpfile.h
index e59239d..b6236dd 100644
--- a/makedumpfile-1.7.2/makedumpfile.h
+++ b/makedumpfile-1.7.2/makedumpfile.h
@@ -2064,6 +2064,7 @@ struct number_table {
long phys_base;
long KERNEL_IMAGE_SIZE;
#ifdef __aarch64__
+ long MAX_USER_VA_BITS;
long VA_BITS;
long TCR_EL1_T1SZ;
unsigned long PHYS_OFFSET;
--
2.31.1