From: "Philippe Mathieu-Daudé" <philmd@linaro.org>
To: qemu-devel@nongnu.org
Cc: "Juergen Gross" <jgross@suse.com>,
"Stefano Stabellini" <sstabellini@kernel.org>,
"Edgar E . Iglesias" <edgar.iglesias@amd.com>,
"Alex Bennée" <alex.bennee@linaro.org>,
"Philippe Mathieu-Daudé" <philmd@linaro.org>
Subject: [PULL 17/28] xen: let xen_ram_addr_from_mapcache() return -1 in case of not found entry
Date: Mon, 6 May 2024 14:37:17 +0200 [thread overview]
Message-ID: <20240506123728.65278-18-philmd@linaro.org> (raw)
In-Reply-To: <20240506123728.65278-1-philmd@linaro.org>
From: Juergen Gross <jgross@suse.com>
Today xen_ram_addr_from_mapcache() will either abort() or return 0 in
case it can't find a matching entry for a pointer value. Both cases
are bad, so change that to return an invalid address instead.
Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Stefano Stabellini <sstabellini@kernel.org>
Message-Id: <20231005181629.4046-5-vikram.garhwal@amd.com>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Message-ID: <20240430164939.925307-3-edgar.iglesias@gmail.com>
[PMD: Keep xen_ram_addr_from_mapcache_not_found trace event]
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
---
hw/xen/xen-mapcache.c | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)
diff --git a/hw/xen/xen-mapcache.c b/hw/xen/xen-mapcache.c
index 7f59080ba7..7771c6cb91 100644
--- a/hw/xen/xen-mapcache.c
+++ b/hw/xen/xen-mapcache.c
@@ -395,12 +395,8 @@ ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
}
if (!found) {
trace_xen_ram_addr_from_mapcache_not_found(ptr);
- QTAILQ_FOREACH(reventry, &mapcache->locked_entries, next) {
- trace_xen_ram_addr_from_mapcache_found(reventry->paddr_index,
- reventry->vaddr_req);
- }
- abort();
- return 0;
+ mapcache_unlock();
+ return RAM_ADDR_INVALID;
}
entry = &mapcache->entry[paddr_index % mapcache->nr_buckets];
@@ -409,7 +405,7 @@ ram_addr_t xen_ram_addr_from_mapcache(void *ptr)
}
if (!entry) {
trace_xen_ram_addr_from_mapcache_not_in_cache(ptr);
- raddr = 0;
+ raddr = RAM_ADDR_INVALID;
} else {
raddr = (reventry->paddr_index << MCACHE_BUCKET_SHIFT) +
((unsigned long) ptr - (unsigned long) entry->vaddr_base);
--
2.41.0
next prev parent reply other threads:[~2024-05-06 12:39 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-06 12:37 [PULL 00/28] Accelerator patches for 2024-05-06 Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 01/28] exec/cpu: Indent TARGET_PAGE_foo definitions Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 02/28] exec/cpu: Rename PAGE_BITS macro to PAGE_RWX Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 03/28] exec/cpu: Remove obsolete PAGE_RESERVED definition Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 04/28] exec/cpu: Remove duplicated PAGE_PASSTHROUGH definition Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 05/28] exec/cpu: Extract page-protection definitions to page-protection.h Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 06/28] accel/tcg: Use cpu_loop_exit_requested() in cpu_loop_exec_tb() Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 07/28] accel/tcg: Access tcg_cflags with getter / setter Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 08/28] accel/tcg: Move user definition of cpu_interrupt() to user-exec.c Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 09/28] accel/tcg: Update CPUNegativeOffsetState::can_do_io field documentation Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 10/28] accel/tcg: Restrict qemu_plugin_vcpu_exit_hook() to TCG plugins Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 11/28] accel/tcg: Restrict cpu_plugin_mem_cbs_enabled() to TCG Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 12/28] accel/tcg: Move @plugin_mem_cbs from CPUState to CPUNegativeOffsetState Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 13/28] user: Forward declare TaskState type definition Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 14/28] user: Declare get_task_state() once in 'accel/tcg/vcpu-state.h' Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 15/28] user: Use get_task_state() helper Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 16/28] softmmu: let qemu_map_ram_ptr() use qemu_ram_ptr_length() Philippe Mathieu-Daudé
2024-05-06 12:37 ` Philippe Mathieu-Daudé [this message]
2024-05-06 12:37 ` [PULL 18/28] xen: mapcache: Refactor lock functions for multi-instance Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 19/28] xen: mapcache: Refactor xen_map_cache " Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 20/28] xen: mapcache: Refactor xen_remap_bucket " Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 21/28] xen: mapcache: Break out xen_ram_addr_from_mapcache_single Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 22/28] xen: mapcache: Refactor xen_replace_cache_entry_unlocked Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 23/28] xen: mapcache: Refactor xen_invalidate_map_cache_entry_unlocked Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 24/28] xen: mapcache: Break out xen_invalidate_map_cache_single() Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 25/28] xen: mapcache: Break out xen_map_cache_init_single() Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 26/28] softmmu: Pass RAM MemoryRegion and is_write in xen_map_cache() Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 27/28] MAINTAINERS: Update Aleksandar Rikalo email Philippe Mathieu-Daudé
2024-05-06 12:37 ` [PULL 28/28] MAINTAINERS: Update my email address Philippe Mathieu-Daudé
2024-05-06 12:44 ` [PULL 00/28] Accelerator patches for 2024-05-06 Philippe Mathieu-Daudé
2024-05-06 19:59 ` Richard Henderson
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