[PATCH] arm64: Add support for additional relocations in the kexec purgatory code
Geoff Levand
geoff at infradead.org
Wed Oct 19 15:52:30 PDT 2016
Hi Catalin,
On 10/19/2016 08:58 AM, Catalin Marinas wrote:
> diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
> index 2e8839a..e067a23 100644
> --- a/kexec/arch/arm64/kexec-arm64.c
> +++ b/kexec/arch/arm64/kexec-arm64.c
> @@ -585,6 +598,19 @@ void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *UNUSED(sym),
> *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
> + (((value - address) << 3) & 0xffffe0));
> break;
> + case R_AARCH64_ADR_PREL_PG_HI21:
> + type = "ADR_PREL_PG_HI21";
> + imm = ((value & ~0xfff) - (address & ~0xfff)) >> 12;
> + loc32 = ptr;
> + *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
> + + ((imm & 3) << 29) + ((imm & 0x1ffffc) << (5 - 2)));
> + break;
> + case R_AARCH64_ADD_ABS_LO12_NC:
> + type = "R_AARCH64_ADD_ABS_LO12_NC";
Following with the others, this should be 'type = "ADD_ABS_LO12_NC"'.
> + loc32 = ptr;
> + *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
> + + ((value & 0xfff) << 10));
> + break;
> case R_AARCH64_JUMP26:
> type = "JUMP26";
> loc32 = ptr;
> @@ -597,6 +623,15 @@ void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *UNUSED(sym),
> *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
> + (((value - address) >> 2) & 0x3ffffff));
> break;
> + case R_AARCH64_LDST64_ABS_LO12_NC:
> + if (value & 7)
> + die("%s: ERROR Unaligned value: %lx\n", __func__,
> + value);
> + type = "R_AARCH64_LDST64_ABS_LO12_NC";
And type = "LDST64_ABS_LO12_NC" here.
> + loc32 = ptr;
> + *loc32 = cpu_to_le32(le32_to_cpu(*loc32)
> + + ((value & 0xff8) << (10 - 3)));
> + break;
> default:
> die("%s: ERROR Unknown type: %lu\n", __func__, r_type);
> break;
Otherwise, looks good. Thanks for taking time to make the fix.
-Geoff
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