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hw/hyperv/syndbg: common compilation unit

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We assume that page size is 4KB only, to dimension buffer size for
receiving message.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Message-ID: <20250424232829.141163-5-pierrick.bouvier@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
This commit is contained in:
Pierrick Bouvier 2025-04-24 16:28:25 -07:00 • committed by Philippe Mathieu-Daudé
parent 4a695643a9
commit 3efb9d2262
2 changed files with 7 additions and 4 deletions
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2
hw/hyperv/meson.build
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@ -1,6 +1,6 @@
specific_ss.add(when: 'CONFIG_HYPERV', if_true: files('hyperv.c'))
specific_ss.add(when: 'CONFIG_HYPERV_TESTDEV', if_true: files('hyperv_testdev.c'))
system_ss.add(when: 'CONFIG_VMBUS', if_true: files('vmbus.c'))
specific_ss.add(when: 'CONFIG_SYNDBG', if_true: files('syndbg.c'))
system_ss.add(when: 'CONFIG_SYNDBG', if_true: files('syndbg.c'))
specific_ss.add(when: 'CONFIG_HV_BALLOON', if_true: files('hv-balloon.c', 'hv-balloon-page_range_tree.c', 'hv-balloon-our_range_memslots.c'))
system_ss.add(when: 'CONFIG_HV_BALLOON', if_false: files('hv-balloon-stub.c'))

9
hw/hyperv/syndbg.c
View file

@ -10,11 +10,11 @@
#include "qemu/error-report.h"
#include "qemu/main-loop.h"
#include "qemu/sockets.h"
#include "qemu/units.h"
#include "qapi/error.h"
#include "migration/vmstate.h"
#include "hw/qdev-properties.h"
#include "hw/loader.h"
#include "cpu.h"
#include "exec/target_page.h"
#include "hw/hyperv/hyperv.h"
#include "hw/hyperv/vmbus-bridge.h"
@ -184,12 +184,15 @@ static bool create_udp_pkt(HvSynDbg *syndbg, void *pkt, uint32_t pkt_len,
return true;
}
#define MSG_BUFSZ (4 * KiB)
static uint16_t handle_recv_msg(HvSynDbg *syndbg, uint64_t outgpa,
uint32_t count, bool is_raw, uint32_t options,
uint64_t timeout, uint32_t *retrieved_count)
{
uint16_t ret;
uint8_t data_buf[TARGET_PAGE_SIZE - UDP_PKT_HEADER_SIZE];
g_assert(MSG_BUFSZ >= qemu_target_page_size());
uint8_t data_buf[MSG_BUFSZ];
hwaddr out_len;
void *out_data;
ssize_t recv_byte_count;
@ -202,7 +205,7 @@ static uint16_t handle_recv_msg(HvSynDbg *syndbg, uint64_t outgpa,
recv_byte_count = 0;
} else {
recv_byte_count = recv(syndbg->socket, data_buf,
MIN(sizeof(data_buf), count), MSG_WAITALL);
MIN(MSG_BUFSZ, count), MSG_WAITALL);
if (recv_byte_count == -1) {
return HV_STATUS_INVALID_PARAMETER;
}