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hw/i386/amd_iommu: Fix the reserved bits definition of IOMMU commands 

Many reserved bits of amd_iommu commands are defined incorrectly in QEMU.
Because of it, QEMU incorrectly injects lots of illegal commands into guest
VM's IOMMU event log.

Signed-off-by: Wei Huang <wei.huang2@amd.com>
Message-Id: <20200418042845.596457-1-wei.huang2@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Wei Huang 2020-04-17 23:28:45 -05:00 committed by Paolo Bonzini
parent bbad173c74
commit 2356ff8500
1 changed files with 10 additions and 9 deletions
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19
hw/i386/amd_iommu.c
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@ -370,7 +370,7 @@ static void amdvi_completion_wait(AMDVIState *s, uint64_t *cmd)
hwaddr addr = cpu_to_le64(extract64(cmd[0], 3, 49)) << 3;
uint64_t data = cpu_to_le64(cmd[1]);
if (extract64(cmd[0], 51, 8)) {
if (extract64(cmd[0], 52, 8)) {
amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4),
s->cmdbuf + s->cmdbuf_head);
}
@ -395,7 +395,7 @@ static void amdvi_inval_devtab_entry(AMDVIState *s, uint64_t *cmd)
uint16_t devid = cpu_to_le16((uint16_t)extract64(cmd[0], 0, 16));
/* This command should invalidate internal caches of which there isn't */
if (extract64(cmd[0], 15, 16) || cmd[1]) {
if (extract64(cmd[0], 16, 44) || cmd[1]) {
amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4),
s->cmdbuf + s->cmdbuf_head);
}
@ -405,9 +405,9 @@ static void amdvi_inval_devtab_entry(AMDVIState *s, uint64_t *cmd)
static void amdvi_complete_ppr(AMDVIState *s, uint64_t *cmd)
{
if (extract64(cmd[0], 15, 16) || extract64(cmd[0], 19, 8) ||
if (extract64(cmd[0], 16, 16) || extract64(cmd[0], 52, 8) ||
extract64(cmd[1], 0, 2) || extract64(cmd[1], 3, 29)
|| extract64(cmd[1], 47, 16)) {
|| extract64(cmd[1], 48, 16)) {
amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4),
s->cmdbuf + s->cmdbuf_head);
}
@ -438,8 +438,8 @@ static void amdvi_inval_pages(AMDVIState *s, uint64_t *cmd)
{
uint16_t domid = cpu_to_le16((uint16_t)extract64(cmd[0], 32, 16));
if (extract64(cmd[0], 20, 12) || extract64(cmd[0], 16, 12) ||
extract64(cmd[0], 3, 10)) {
if (extract64(cmd[0], 20, 12) || extract64(cmd[0], 48, 12) ||
extract64(cmd[1], 3, 9)) {
amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4),
s->cmdbuf + s->cmdbuf_head);
}
@ -451,7 +451,7 @@ static void amdvi_inval_pages(AMDVIState *s, uint64_t *cmd)
static void amdvi_prefetch_pages(AMDVIState *s, uint64_t *cmd)
{
if (extract64(cmd[0], 16, 8) || extract64(cmd[0], 20, 8) ||
if (extract64(cmd[0], 16, 8) || extract64(cmd[0], 52, 8) ||
extract64(cmd[1], 1, 1) || extract64(cmd[1], 3, 1) ||
extract64(cmd[1], 5, 7)) {
amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4),
@ -463,7 +463,7 @@ static void amdvi_prefetch_pages(AMDVIState *s, uint64_t *cmd)
static void amdvi_inval_inttable(AMDVIState *s, uint64_t *cmd)
{
if (extract64(cmd[0], 16, 16) || cmd[1]) {
if (extract64(cmd[0], 16, 44) || cmd[1]) {
amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4),
s->cmdbuf + s->cmdbuf_head);
return;
@ -479,7 +479,8 @@ static void iommu_inval_iotlb(AMDVIState *s, uint64_t *cmd)
{
uint16_t devid = extract64(cmd[0], 0, 16);
if (extract64(cmd[1], 1, 1) || extract64(cmd[1], 3, 9)) {
if (extract64(cmd[1], 1, 1) || extract64(cmd[1], 3, 1) ||
extract64(cmd[1], 6, 6)) {
amdvi_log_illegalcom_error(s, extract64(cmd[0], 60, 4),
s->cmdbuf + s->cmdbuf_head);
return;