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| author | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2018-06-07 11:29:15 +0100 |
|---|---|---|
| committer | Dimitris Papastamos <dimitris.papastamos@arm.com> | 2018-06-08 11:46:31 +0100 |
| commit | 6f03bc7753a22485ad2b531a11e96756147facbe (patch) | |
| tree | e411a969ab2cfcabc579b434419a30cf5ada66c0 /include | |
| parent | d6b798097e23bc98814ced8406f4dc63df4078c5 (diff) | |
| download | platform_external_arm-trusted-firmware-6f03bc7753a22485ad2b531a11e96756147facbe.tar.gz platform_external_arm-trusted-firmware-6f03bc7753a22485ad2b531a11e96756147facbe.tar.bz2 platform_external_arm-trusted-firmware-6f03bc7753a22485ad2b531a11e96756147facbe.zip | |
SDEI: Ensure SDEI handler executes with CVE-2018-3639 mitigation enabled
When dynamic mitigation is used, the SDEI handler is required to
execute with the mitigation enabled by default, regardless of the
mitigation state for lower ELs. This means that if the kernel or
hypervisor explicitly disables the mitigation and then later when the
event is dispatched, the dispatcher will remember the mitigation state
for the lower ELs but force the mitigation to be on during the SDEI
handler execution. When the SDEI handler returns, it will restore the
mitigation state.
This behaviour is described in "Firmware interfaces for mitigating
cache speculation vulnerabilities System Software on Arm Systems"[0].
[0] https://developer.arm.com/cache-speculation-vulnerability-firmware-specification
Change-Id: I8dd60b736be0aa9e832b0f92d67a401fdeb417f4
Signed-off-by: Dimitris Papastamos <dimitris.papastamos@arm.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/lib/el3_runtime/aarch64/context.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/lib/el3_runtime/aarch64/context.h b/include/lib/el3_runtime/aarch64/context.h index a4f3ea1bb..a2ce9f828 100644 --- a/include/lib/el3_runtime/aarch64/context.h +++ b/include/lib/el3_runtime/aarch64/context.h @@ -271,6 +271,7 @@ typedef struct cpu_context { #endif #define get_sysregs_ctx(h) (&((cpu_context_t *) h)->sysregs_ctx) #define get_gpregs_ctx(h) (&((cpu_context_t *) h)->gpregs_ctx) +#define get_cve_2018_3639_ctx(h) (&((cpu_context_t *) h)->cve_2018_3639_ctx) /* * Compile time assertions related to the 'cpu_context' structure to |