diff options
| author | Tyler Baicar <tbaicar@codeaurora.org> | 2017-06-21 20:17:14 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-06-22 19:22:05 +0200 |
| commit | 621f48e40ee9b0100a802531069166d7d94796e0 (patch) | |
| tree | 3411689c2307e6f82325354c85c8940cf9aec483 /drivers/acpi/apei/ghes.c | |
| parent | trace, ras: add ARM processor error trace event (diff) | |
| download | linux-621f48e40ee9b0100a802531069166d7d94796e0.tar.xz linux-621f48e40ee9b0100a802531069166d7d94796e0.zip | |
arm/arm64: KVM: add guest SEA support
Currently external aborts are unsupported by the guest abort
handling. Add handling for SEAs so that the host kernel reports
SEAs which occur in the guest kernel.
When an SEA occurs in the guest kernel, the guest exits and is
routed to kvm_handle_guest_abort(). Prior to this patch, a print
message of an unsupported FSC would be printed and nothing else
would happen. With this patch, the code gets routed to the APEI
handling of SEAs in the host kernel to report the SEA information.
Signed-off-by: Tyler Baicar <tbaicar@codeaurora.org>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Christoffer Dall <cdall@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/acpi/apei/ghes.c')
| -rw-r--r-- | drivers/acpi/apei/ghes.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index 5073d035bb6e..bc717bdf50f1 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -816,17 +816,22 @@ static struct notifier_block ghes_notifier_sci = { #ifdef CONFIG_ACPI_APEI_SEA static LIST_HEAD(ghes_sea); -void ghes_notify_sea(void) +/* + * Return 0 only if one of the SEA error sources successfully reported an error + * record sent from the firmware. + */ +int ghes_notify_sea(void) { struct ghes *ghes; + int ret = -ENOENT; - /* - * synchronize_rcu() will wait for nmi_exit(), so no need to - * rcu_read_lock(). - */ + rcu_read_lock(); list_for_each_entry_rcu(ghes, &ghes_sea, list) { - ghes_proc(ghes); + if (!ghes_proc(ghes)) + ret = 0; } + rcu_read_unlock(); + return ret; } static void ghes_sea_add(struct ghes *ghes) |