arm64: Do not issue IPIs for user executable ptes
euler inclusion category: bugfix Bugzilla: 5511 CVE: N/A ------------------------------------------------------------------------ Commit 3b8c9f1c ("arm64: IPI each CPU after invalidating the I-cache for kernel mappings") was aimed at fixing the I-cache invalidation for kernel mappings. However, it inadvertently caused all cache maintenance for user mappings via set_pte_at() -> __sync_icache_dcache() -> sync_icache_aliases() to call kick_all_cpus_sync(). Reported-by: NShijith Thotton <sthotton@marvell.com> Tested-by: NShijith Thotton <sthotton@marvell.com> Reported-by: NWandun Chen <chenwandun@huawei.com> Fixes: 3b8c9f1c ("arm64: IPI each CPU after invalidating the I-cache for kernel mappings") Cc: <stable@vger.kernel.org> # 4.19.x- Signed-off-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NChen Wandun <chenwandun@huawei.com> Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com> Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>
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