[PATCH 5.15 22/43] arm64: spectre: Rename spectre_v4_patch_fw_mitigation_conduit

Greg Kroah-Hartman
2022-03-09T16:14:45Z

From: James Morse <james.morse@arm.com>

commit 1b33d4860deaecf1d8eec3061b7e7ed7ab0bae8d upstream.

The spectre-v4 sequence includes an SMC from the assembly entry code.
spectre_v4_patch_fw_mitigation_conduit is the patching callback that
generates an HVC or SMC depending on the SMCCC conduit type.

As this isn't specific to spectre-v4, rename it
smccc_patch_fw_mitigation_conduit so it can be re-used.

Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/arm64/kernel/entry.S | 2 +-
arch/arm64/kernel/proton-pack.c | 6 +++---
2 files changed, 4 insertions(+), 4 deletions(-)

--- a/arch/arm64/kernel/entry.S
+++ b/arch/arm64/kernel/entry.S
@@ -118,7 +118,7 @@ alternative_cb_end
tbnz \tmp2, #TIF_SSBD, .L__asm_ssbd_skip\@
mov w0, #ARM_SMCCC_ARCH_WORKAROUND_2
mov w1, #\state
-alternative_cb spectre_v4_patch_fw_mitigation_conduit
+alternative_cb smccc_patch_fw_mitigation_conduit
nop // Patched to SMC/HVC #0
alternative_cb_end
.L__asm_ssbd_skip\@:
--- a/arch/arm64/kernel/proton-pack.c
+++ b/arch/arm64/kernel/proton-pack.c
@@ -554,9 +554,9 @@ void __init spectre_v4_patch_fw_mitigati
* Patch a NOP in the Spectre-v4 mitigation code with an SMC/HVC instruction
* to call into firmware to adjust the mitigation state.
*/
-void __init spectre_v4_patch_fw_mitigation_conduit(struct alt_instr *alt,
- __le32 *origptr,
- __le32 *updptr, int nr_inst)
+void __init smccc_patch_fw_mitigation_conduit(struct alt_instr *alt,
+ __le32 *origptr,
+ __le32 *updptr, int nr_inst)
{
u32 insn;