Add a new ARM64_HAS_VIRT_HOST_EXTN features to indicate that the
CPU has the ARMv8.1 VHE capability.
This will be used to trigger kernel patching in KVM.
Acked-by: Christoffer Dall <christoffer.dall@linaro.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
(cherry picked from commit
d88701bea3664cea99b8b7380f63a3bd0ec3ead3)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
Conflicts:
arch/arm64/include/asm/cpufeature.h
#define ARM64_WORKAROUND_834220 7
#define ARM64_WORKAROUND_CAVIUM_27456 8
#define ARM64_WORKAROUND_834220 7
#define ARM64_WORKAROUND_CAVIUM_27456 8
+/* #define ARM64_HAS_NO_HW_PREFETCH 8 */
+/* #define ARM64_HAS_UAO 9 */
+/* #define ARM64_ALT_PAN_NOT_UAO 10 */
+#define ARM64_HAS_VIRT_HOST_EXTN 11
+
+#define ARM64_NCAPS 12
#include <asm/cpu_ops.h>
#include <asm/processor.h>
#include <asm/sysreg.h>
#include <asm/cpu_ops.h>
#include <asm/processor.h>
#include <asm/sysreg.h>
unsigned long elf_hwcap __read_mostly;
EXPORT_SYMBOL_GPL(elf_hwcap);
unsigned long elf_hwcap __read_mostly;
EXPORT_SYMBOL_GPL(elf_hwcap);
+static bool runs_at_el2(const struct arm64_cpu_capabilities *entry)
+{
+ return is_kernel_in_hyp_mode();
+}
+
static const struct arm64_cpu_capabilities arm64_features[] = {
{
.desc = "GIC system register CPU interface",
static const struct arm64_cpu_capabilities arm64_features[] = {
{
.desc = "GIC system register CPU interface",
.min_field_value = 2,
},
#endif /* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */
.min_field_value = 2,
},
#endif /* CONFIG_AS_LSE && CONFIG_ARM64_LSE_ATOMICS */
+ {
+ .desc = "Virtualization Host Extensions",
+ .capability = ARM64_HAS_VIRT_HOST_EXTN,
+ .matches = runs_at_el2,
+ },