[Xen-changelog] [xen stable-4.9] xen/arm: cpuerrata: Actually check errata on non-boot CPUs

[patchbot@xxxxxxx]

commit 3b10e123e926dd8469c0b3137a32d387ef70b1f5
Author:     Julien Grall <julien.grall@xxxxxxx>
AuthorDate: Wed Feb 14 12:22:23 2018 +0000
Commit:     Stefano Stabellini <sstabellini@xxxxxxxxxx>
CommitDate: Tue Feb 20 17:12:47 2018 -0800

    xen/arm: cpuerrata: Actually check errata on non-boot CPUs
    
    The cpu errata framework was introduced in commit 8b01f6364f "xen/arm:
    Detect silicon revision and set cap bits accordingly" and was meant to
    detect errata present on any CPUs (via check_local_cpu_errata). However,
    the function to check the MIDR (is_affected_midr_range) mistakenly
    always use the boot CPU MIDR.
    
    Fix is_affected_midr_range to use the current CPU MIDR.
    
    Reported-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    Signed-off-by: Julien Grall <julien.grall@xxxxxxx>
    Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
    (cherry picked from commit 27196d4cc917d91b5b5daee50173565139ca9c9d)
---
 xen/arch/arm/cpuerrata.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/xen/arch/arm/cpuerrata.c b/xen/arch/arm/cpuerrata.c
index 28d533e..7b7067b 100644
--- a/xen/arch/arm/cpuerrata.c
+++ b/xen/arch/arm/cpuerrata.c
@@ -226,7 +226,7 @@ static int enable_ic_inv_hardening(void *data)
 static bool_t __maybe_unused
 is_affected_midr_range(const struct arm_cpu_capabilities *entry)
 {
-    return MIDR_IS_CPU_MODEL_RANGE(boot_cpu_data.midr.bits, entry->midr_model,
+    return MIDR_IS_CPU_MODEL_RANGE(current_cpu_data.midr.bits, 
entry->midr_model,
                                    entry->midr_range_min,
                                    entry->midr_range_max);
 }
--
generated by git-patchbot for /home/xen/git/xen.git#stable-4.9

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