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qemu-kvm/kvm-ide-test-Test-reset-during-TRIM.patch
Miroslav Rezanina e880766b3c Reset to RHEL 
Resolves: VOYAGER-1263
2026-07-10 10:35:27 +02:00

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From 1d7ff7d45d25d64fc17087a7efadca12fb9ee4e9 Mon Sep 17 00:00:00 2001
From: Kevin Wolf <kwolf@redhat.com>
Date: Tue, 21 Apr 2026 18:11:32 +0200
Subject: [PATCH 07/52] ide-test: Test reset during TRIM
RH-Author: Kevin Wolf <kwolf@redhat.com>
RH-MergeRequest: 503: ide: Fix deadlock between TRIM and drain
RH-Jira: RHEL-121686
RH-Acked-by: Hanna Czenczek <hreitz@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Commit: [7/7] ce0ab448a920d91472da7c89080eeafa3d9cf830 (kmwolf/centos-qemu-kvm)
This is a regression test for the bug fixed in the previous commits, a
deadlock between the drain issued by an IDE reset and the TRIM state
machine.
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Message-ID: <20260421161132.99878-8-kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 2fa24e9755994f76f08ea2452215eb50f26f4c21)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
tests/qtest/ide-test.c | 95 ++++++++++++++++++++++++++++++++++++++----
1 file changed, 87 insertions(+), 8 deletions(-)
diff --git a/tests/qtest/ide-test.c b/tests/qtest/ide-test.c
index c6dcb2c074..721e78170b 100644
--- a/tests/qtest/ide-test.c
+++ b/tests/qtest/ide-test.c
@@ -41,8 +41,11 @@
#define IDE_PCI_FUNC 1
#define IDE_BASE 0x1f0
+#define IDE_BASE2 0x3f6
#define IDE_PRIMARY_IRQ 14
+#define IDE_CTRL_RESET 0x04
+
#define ATAPI_BLOCK_SIZE 2048
/* How many bytes to receive via ATAPI PIO at one time.
@@ -99,6 +102,7 @@ enum {
CMDF_ABORT = 0x100,
CMDF_NO_BM = 0x200,
+ CMDF_NO_WAIT = 0x400,
};
enum {
@@ -228,21 +232,21 @@ static uint8_t wait_dma_completion(QTestState *qts, QPCIDevice *dev,
return status;
}
-static int send_dma_request(QTestState *qts, int cmd, uint64_t sector,
- int nb_sectors, PrdtEntry *prdt, int prdt_entries,
- void(*post_exec)(QPCIDevice *dev, QPCIBar ide_bar,
- uint64_t sector, int nb_sectors))
+static int send_dma_request_dev(QTestState *qts, QPCIDevice *dev,
+ QPCIBar bmdma_bar, QPCIBar ide_bar, int cmd,
+ uint64_t sector, int nb_sectors,
+ PrdtEntry *prdt, int prdt_entries,
+ void(*post_exec)(QPCIDevice *dev,
+ QPCIBar ide_bar,
+ uint64_t sector,
+ int nb_sectors))
{
- QPCIDevice *dev;
- QPCIBar bmdma_bar, ide_bar;
uintptr_t guest_prdt;
size_t len;
bool from_dev;
uint8_t status;
int flags;
- dev = get_pci_device(qts, &bmdma_bar, &ide_bar);
-
flags = cmd & ~0xff;
cmd &= 0xff;
@@ -308,8 +312,28 @@ static int send_dma_request(QTestState *qts, int cmd, uint64_t sector,
qpci_io_writeb(dev, bmdma_bar, bmreg_cmd, 0);
}
+ if (flags & CMDF_NO_WAIT) {
+ return 0;
+ }
+
status = wait_dma_completion(qts, dev, bmdma_bar, ide_bar);
+ return status;
+}
+
+static int send_dma_request(QTestState *qts, int cmd, uint64_t sector,
+ int nb_sectors, PrdtEntry *prdt, int prdt_entries,
+ void(*post_exec)(QPCIDevice *dev, QPCIBar ide_bar,
+ uint64_t sector, int nb_sectors))
+{
+ QPCIDevice *dev;
+ QPCIBar bmdma_bar, ide_bar;
+ uint8_t status;
+
+ dev = get_pci_device(qts, &bmdma_bar, &ide_bar);
+ status = send_dma_request_dev(qts, dev, bmdma_bar, ide_bar,
+ cmd, sector, nb_sectors, prdt, prdt_entries,
+ post_exec);
free_pci_device(dev);
return status;
@@ -457,6 +481,60 @@ static void test_bmdma_trim(void)
test_bmdma_teardown(qts);
}
+static void test_bmdma_trim_reset(void)
+{
+ QTestState *qts;
+ QPCIDevice *dev;
+ QPCIBar bmdma_bar, ide_bar, ide_bar2;
+ uint8_t status;
+ const uint64_t trim_range[] = {
+ trim_range_le(0, 2),
+ trim_range_le(6, 8),
+ };
+ size_t len = 512;
+ uint8_t *buf;
+ uintptr_t guest_buf;
+ PrdtEntry prdt[1];
+
+ qts = ide_test_start(
+ "-blockdev file,filename=%s,node-name=img "
+ "-blockdev blkdebug,image=img,node-name=dbg,discard=unmap,"
+ "inject-error.0.event=none,inject-error.0.iotype=discard,"
+ "inject-error.0.errno=0,inject-error.0.delay-ns=1000000 "
+ "-device ide-hd,drive=dbg,bus=ide.0",
+ tmp_path[0]);
+ qtest_irq_intercept_in(qts, "ioapic");
+
+ guest_buf = guest_alloc(&guest_malloc, len);
+ prdt[0].addr = cpu_to_le32(guest_buf),
+ prdt[0].size = cpu_to_le32(len | PRDT_EOT),
+
+ dev = get_pci_device(qts, &bmdma_bar, &ide_bar);
+ ide_bar2 = qpci_legacy_iomap(dev, IDE_BASE2);
+
+ buf = g_malloc(len);
+
+ /* TRIM request with two segments */
+ *((uint64_t *)buf) = trim_range[0];
+ *((uint64_t *)buf + 1) = trim_range[1];
+
+ qtest_memwrite(qts, guest_buf, buf, 2 * sizeof(uint64_t));
+
+ send_dma_request_dev(qts, dev, bmdma_bar, ide_bar, CMD_DSM | CMDF_NO_WAIT, 0, 1, prdt,
+ ARRAY_SIZE(prdt), NULL);
+
+ /* Reset the device while the first segment is in flight */
+ qpci_io_writeb(dev, ide_bar2, 0, IDE_CTRL_RESET);
+
+ status = wait_dma_completion(qts, dev, bmdma_bar, ide_bar);
+ g_assert_cmphex(status, ==, BM_STS_INTR);
+ assert_bit_clear(qpci_io_readb(dev, ide_bar, reg_status), DF | ERR);
+
+ free_pci_device(dev);
+ g_free(buf);
+ test_bmdma_teardown(qts);
+}
+
/*
* This test is developed according to the Programming Interface for
* Bus Master IDE Controller (Revision 1.0 5/16/94)
@@ -1138,6 +1216,7 @@ int main(int argc, char **argv)
qtest_add_func("/ide/bmdma/simple_rw", test_bmdma_simple_rw);
qtest_add_func("/ide/bmdma/trim", test_bmdma_trim);
+ qtest_add_func("/ide/bmdma/trim_reset", test_bmdma_trim_reset);
qtest_add_func("/ide/bmdma/various_prdts", test_bmdma_various_prdts);
qtest_add_func("/ide/bmdma/no_busmaster", test_bmdma_no_busmaster);
--
2.52.0
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