treewide: disable spectre mitigation on unaffected Arm32 targets

Cortex-A5 and Cortex-A7 are not vulnerable to any Spectre variants.

Ref: https://developer.arm.com/Arm%20Security%20Center/Speculative%20Processor%20Vulnerability
Signed-off-by: Qingfang Deng <[email protected]>

target/linux/airoha/config-5.15

@@ -122,7 +122,8 @@ CONFIG_GPIO_CDEV=y
 CONFIG_GPIO_EN7523=y
 CONFIG_GPIO_GENERIC=y
 CONFIG_HANDLE_DOMAIN_IRQ=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/airoha/config-6.1

@@ -133,7 +133,8 @@ CONFIG_GPIOLIB_IRQCHIP=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GPIO_EN7523=y
 CONFIG_GPIO_GENERIC=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/at91/sama5/config-5.15

@@ -192,7 +192,8 @@ CONFIG_GLOB=y
 CONFIG_GPIOLIB_IRQCHIP=y
 CONFIG_GPIO_CDEV=y
 CONFIG_HANDLE_DOMAIN_IRQ=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/at91/sama7/config-5.15

@@ -181,7 +181,8 @@ CONFIG_GPIOLIB_IRQCHIP=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GRACE_PERIOD=y
 CONFIG_HANDLE_DOMAIN_IRQ=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/bcm27xx/bcm2709/config-6.1

@@ -241,7 +241,8 @@ CONFIG_GPIO_BCM_VIRT=y
 CONFIG_GPIO_CDEV=y
 # CONFIG_GPIO_FSM is not set
 CONFIG_GPIO_RASPBERRYPI_EXP=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/imx/cortexa7/config-default

@@ -53,6 +53,8 @@ CONFIG_FRAMEBUFFER_CONSOLE=y
 CONFIG_FRAMEBUFFER_CONSOLE_DETECT_PRIMARY=y
 CONFIG_FRAMEBUFFER_CONSOLE_ROTATION=y
 CONFIG_GENERIC_IRQ_EFFECTIVE_AFF_MASK=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HDMI=y
 CONFIG_HW_CONSOLE=y
 CONFIG_HW_RANDOM_IMX_RNGC=y

target/linux/ipq40xx/config-6.1

@@ -199,7 +199,8 @@ CONFIG_GPIO_CDEV=y
 CONFIG_GPIO_WATCHDOG=y
 CONFIG_GPIO_WATCHDOG_ARCH_INITCALL=y
 CONFIG_GRO_CELLS=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/layerscape/armv7/config-6.1

@@ -274,7 +274,8 @@ CONFIG_GPIO_GENERIC_PLATFORM=y
 CONFIG_GPIO_MPC8XXX=y
 CONFIG_GPIO_MXC=y
 CONFIG_GPIO_VF610=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/mediatek/mt7623/config-6.1

@@ -262,7 +262,8 @@ CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GENERIC_VDSO_32=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GRO_CELLS=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/mediatek/mt7623/config-6.6

@@ -270,6 +270,8 @@ CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GENERIC_VDSO_32=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GRO_CELLS=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDEN_BRANCH_PREDICTOR=y
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y

target/linux/mediatek/mt7629/config-6.1

@@ -146,7 +146,8 @@ CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GENERIC_VDSO_32=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GRO_CELLS=y
-CONFIG_HARDEN_BRANCH_PREDICTOR=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y
 CONFIG_HAS_IOMEM=y

target/linux/mediatek/mt7629/config-6.6

@@ -145,6 +145,8 @@ CONFIG_GENERIC_TIME_VSYSCALL=y
 CONFIG_GENERIC_VDSO_32=y
 CONFIG_GPIO_CDEV=y
 CONFIG_GRO_CELLS=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 CONFIG_HARDEN_BRANCH_PREDICTOR=y
 CONFIG_HARDIRQS_SW_RESEND=y
 CONFIG_HAS_DMA=y

target/linux/sunxi/cortexa7/config-6.1

@@ -4,6 +4,8 @@ CONFIG_CRYPTO_BLAKE2S_ARM=y
 CONFIG_CRYPTO_LIB_BLAKE2S_GENERIC=y
 CONFIG_DWMAC_SUN8I=y
 CONFIG_GRO_CELLS=y
+# CONFIG_HARDEN_BRANCH_HISTORY is not set
+# CONFIG_HARDEN_BRANCH_PREDICTOR is not set
 # CONFIG_MACH_SUN4I is not set
 # CONFIG_MACH_SUN5I is not set
 CONFIG_MDIO_BUS_MUX=y