Commit-ID: fd498076821739db38babe72602f7c227587cbb5 Gitweb: https://git.kernel.org/tip/fd498076821739db38babe72602f7c227587cbb5 Author: Jan Kiszka <[email protected]> AuthorDate: Mon, 27 Nov 2017 09:11:52 +0100 Committer: Thomas Gleixner <[email protected]> CommitDate: Sun, 14 Jan 2018 21:11:57 +0100
x86/jailhouse: Halt instead of failing to restart Jailhouse provides no guest-initiated restart. So, do not even try to. Signed-off-by: Jan Kiszka <[email protected]> Signed-off-by: Thomas Gleixner <[email protected]> Cc: [email protected] Link: https://lkml.kernel.org/r/ef8a0ef95c2b17c21066e5f28ea56b58bf7eaa82.1511770314.git.jan.kis...@siemens.com --- arch/x86/kernel/jailhouse.c | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/x86/kernel/jailhouse.c b/arch/x86/kernel/jailhouse.c index 54469ef..2b55672 100644 --- a/arch/x86/kernel/jailhouse.c +++ b/arch/x86/kernel/jailhouse.c @@ -10,10 +10,12 @@ #include <linux/acpi_pmtmr.h> #include <linux/kernel.h> +#include <linux/reboot.h> #include <asm/apic.h> #include <asm/cpu.h> #include <asm/hypervisor.h> #include <asm/i8259.h> +#include <asm/reboot.h> #include <asm/setup.h> static __initdata struct jailhouse_setup_data setup_data; @@ -77,6 +79,12 @@ static void __init jailhouse_get_smp_config(unsigned int early) smp_found_config = 1; } +static void jailhouse_no_restart(void) +{ + pr_notice("Jailhouse: Restart not supported, halting\n"); + machine_halt(); +} + static void __init jailhouse_init_platform(void) { u64 pa_data = boot_params.hdr.setup_data; @@ -96,6 +104,8 @@ static void __init jailhouse_init_platform(void) legacy_pic = &null_legacy_pic; + machine_ops.emergency_restart = jailhouse_no_restart; + while (pa_data) { mapping = early_memremap(pa_data, sizeof(header)); memcpy(&header, mapping, sizeof(header));
