[PATCH v2 09/13] KVM: arm64: Trap & emulate the ITS MAPC command
Sebastian Ene <[email protected]>
| Newsgroups | gmane.linux.kernel,gmane.linux.ports.arm.kernel |
|---|---|
| Message-ID | <[email protected]> |
Parse the MAPC command and verify if we need to do any updates to the shadow collection table. Signed-off-by: Sebastian Ene <[email protected]> --- arch/arm64/kvm/hyp/nvhe/its_emulate.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/arm64/kvm/hyp/nvhe/its_emulate.c b/arch/arm64/kvm/hyp/nvhe/its_emulate.c index 071a08d3602d..5629e2a070df 100644 --- a/arch/arm64/kvm/hyp/nvhe/its_emulate.c +++ b/arch/arm64/kvm/hyp/nvhe/its_emulate.c @@ -332,6 +332,13 @@ static int process_its_mapd(struct its_priv_state *its, struct its_cmd_block *cm return track_pfn(its, device_id, itt_pfn, num_pages, remove); } +static int process_its_mapc(struct its_priv_state *its, struct its_cmd_block *cmd, bool rollback) +{ + u32 icid = cmd->raw_cmd[2] & GENMASK(15, 0); + + return check_table_update(its, icid, GITS_BASER_TYPE_COLLECTION, rollback); +} + static int process_cmd(struct its_priv_state *its, struct its_cmd_block *cmd, bool rollback) { @@ -342,6 +349,10 @@ static int process_cmd(struct its_priv_state *its, struct its_cmd_block *cmd, case GITS_CMD_MAPD: ret = process_its_mapd(its, cmd, rollback); break; + + case GITS_CMD_MAPC: + ret = process_its_mapc(its, cmd, rollback); + break; default: /* Passthrough everything for now */ break; -- 2.55.0.654.g21b8a5bc05-goog