From c79d36500fdf74bbc87b2475b3a95648ee2dff8a Mon Sep 17 00:00:00 2001 From: Peter Xu Date: Thu, 8 Nov 2018 06:29:35 +0000 Subject: [PATCH 07/35] intel_iommu: introduce vtd_reset_caches() RH-Author: Peter Xu Message-id: <20181108062938.21143-5-peterx@redhat.com> Patchwork-id: 82963 O-Subject: [RHEL-8 qemu-kvm PATCH 4/7] intel_iommu: introduce vtd_reset_caches() Bugzilla: 1625173 RH-Acked-by: Auger Eric RH-Acked-by: Michael S. Tsirkin RH-Acked-by: Laurent Vivier Bugzilla: 1625173 Provide the function and use it in vtd_init(). Used to reset both context entry cache and iotlb cache for the whole IOMMU unit. Signed-off-by: Peter Xu Reviewed-by: Eric Auger Reviewed-by: Jason Wang Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin (cherry picked from commit 06aba4ca52fd2c8718b8ba486f22f0aa7c99ed55) Signed-off-by: Peter Xu Signed-off-by: Danilo C. L. de Paula --- hw/i386/intel_iommu.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c index aab86e9..48d0ba3 100644 --- a/hw/i386/intel_iommu.c +++ b/hw/i386/intel_iommu.c @@ -227,6 +227,14 @@ static void vtd_reset_iotlb(IntelIOMMUState *s) vtd_iommu_unlock(s); } +static void vtd_reset_caches(IntelIOMMUState *s) +{ + vtd_iommu_lock(s); + vtd_reset_iotlb_locked(s); + vtd_reset_context_cache_locked(s); + vtd_iommu_unlock(s); +} + static uint64_t vtd_get_iotlb_key(uint64_t gfn, uint16_t source_id, uint32_t level) { @@ -3160,10 +3168,7 @@ static void vtd_init(IntelIOMMUState *s) s->cap |= VTD_CAP_CM; } - vtd_iommu_lock(s); - vtd_reset_context_cache_locked(s); - vtd_reset_iotlb_locked(s); - vtd_iommu_unlock(s); + vtd_reset_caches(s); /* Define registers with default values and bit semantics */ vtd_define_long(s, DMAR_VER_REG, 0x10UL, 0, 0); -- 1.8.3.1